diff --git a/core/java/android/webkit/BrowserFrame.java b/core/java/android/webkit/BrowserFrame.java
index ec3c329..b7ffd14 100644
--- a/core/java/android/webkit/BrowserFrame.java
+++ b/core/java/android/webkit/BrowserFrame.java
@@ -88,6 +88,9 @@
     // Attached Javascript interfaces
     private Map<String, Object> mJSInterfaceMap;
 
+    // Key store handler when Chromium HTTP stack is used.
+    private KeyStoreHandler mKeyStoreHandler = null;
+
     // message ids
     // a message posted when a frame loading is completed
     static final int FRAME_COMPLETED = 1001;
@@ -1173,8 +1176,27 @@
         }
         mimeType = MimeTypeMap.getSingleton().remapGenericMimeType(
                 mimeType, url, contentDisposition);
-        mCallbackProxy.onDownloadStart(url, userAgent,
+
+        if (CertTool.getCertType(mimeType) != null) {
+            mKeyStoreHandler = new KeyStoreHandler(mimeType);
+        } else {
+            mCallbackProxy.onDownloadStart(url, userAgent,
                 contentDisposition, mimeType, contentLength);
+        }
+    }
+
+    /**
+     * Called by JNI for Chrome HTTP stack when the Java side needs to access the data.
+     */
+    private void didReceiveData(byte data[], int size) {
+        if (mKeyStoreHandler != null) mKeyStoreHandler.didReceiveData(data, size);
+    }
+
+    private void didFinishLoading() {
+      if (mKeyStoreHandler != null) {
+          mKeyStoreHandler.installCert(mContext);
+          mKeyStoreHandler = null;
+      }
     }
 
     /**
diff --git a/core/java/android/webkit/CertTool.java b/core/java/android/webkit/CertTool.java
index d25d970..4c534f9 100644
--- a/core/java/android/webkit/CertTool.java
+++ b/core/java/android/webkit/CertTool.java
@@ -29,6 +29,7 @@
 
 import java.security.KeyPair;
 import java.security.KeyPairGenerator;
+import java.util.HashMap;
 
 class CertTool {
     private static final String LOGTAG = "CertTool";
@@ -39,6 +40,14 @@
     static final String CERT = Credentials.CERTIFICATE;
     static final String PKCS12 = Credentials.PKCS12;
 
+    private static HashMap<String, String> sCertificateTypeMap;
+    static {
+        sCertificateTypeMap = new HashMap<String, String>();
+        sCertificateTypeMap.put("application/x-x509-ca-cert", CertTool.CERT);
+        sCertificateTypeMap.put("application/x-x509-user-cert", CertTool.CERT);
+        sCertificateTypeMap.put("application/x-pkcs12", CertTool.PKCS12);
+    }
+
     static String[] getKeyStrengthList() {
         return new String[] {"High Grade", "Medium Grade"};
     }
@@ -66,5 +75,9 @@
         Credentials.getInstance().install(context, type, value);
     }
 
+    static String getCertType(String mimeType) {
+        return sCertificateTypeMap.get(mimeType);
+  }
+
     private CertTool() {}
 }
diff --git a/core/java/android/webkit/KeyStoreHandler.java b/core/java/android/webkit/KeyStoreHandler.java
new file mode 100644
index 0000000..849007e
--- /dev/null
+++ b/core/java/android/webkit/KeyStoreHandler.java
@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.webkit;
+
+import android.content.Context;
+import android.os.Handler;
+import android.util.Log;
+
+/**
+ * KeyStoreHandler: class responsible for certificate installation to
+ * the system key store. It reads the certificates file from network
+ * then pass the bytes to class CertTool.
+ * This class is only needed if the Chromium HTTP stack is used.
+ */
+class KeyStoreHandler extends Handler {
+    private static final String LOGTAG = "KeyStoreHandler";
+
+    private final ByteArrayBuilder mDataBuilder = new ByteArrayBuilder();
+
+    private String mMimeType;
+
+    public KeyStoreHandler(String mimeType) {
+      mMimeType = mimeType;
+    }
+
+    /**
+     * Add data to the internal collection of data.
+     * @param data A byte array containing the content.
+     * @param length The length of data.
+     */
+    public void didReceiveData(byte[] data, int length) {
+        synchronized (mDataBuilder) {
+            mDataBuilder.append(data, 0, length);
+        }
+    }
+
+    public void installCert(Context context) {
+        String type = CertTool.getCertType(mMimeType);
+        if (type == null) return;
+
+        // This must be synchronized so that no more data can be added
+        // after getByteSize returns.
+        synchronized (mDataBuilder) {
+            // In the case of downloading certificate, we will save it
+            // to the KeyStore and stop the current loading so that it
+            // will not generate a new history page
+            byte[] cert = new byte[mDataBuilder.getByteSize()];
+            int offset = 0;
+            while (true) {
+                ByteArrayBuilder.Chunk c = mDataBuilder.getFirstChunk();
+                if (c == null) break;
+
+                if (c.mLength != 0) {
+                    System.arraycopy(c.mArray, 0, cert, offset, c.mLength);
+                    offset += c.mLength;
+                }
+                c.release();
+            }
+            CertTool.addCertificate(context, type, cert);
+            return;
+        }
+    }
+}
diff --git a/core/java/android/webkit/LoadListener.java b/core/java/android/webkit/LoadListener.java
index 6d1d39a..04af738 100644
--- a/core/java/android/webkit/LoadListener.java
+++ b/core/java/android/webkit/LoadListener.java
@@ -75,14 +75,6 @@
     private static final int HTTP_NOT_FOUND = 404;
     private static final int HTTP_PROXY_AUTH = 407;
 
-    private static HashMap<String, String> sCertificateTypeMap;
-    static {
-        sCertificateTypeMap = new HashMap<String, String>();
-        sCertificateTypeMap.put("application/x-x509-ca-cert", CertTool.CERT);
-        sCertificateTypeMap.put("application/x-x509-user-cert", CertTool.CERT);
-        sCertificateTypeMap.put("application/x-pkcs12", CertTool.PKCS12);
-    }
-
     private static int sNativeLoaderCount;
 
     private final ByteArrayBuilder mDataBuilder = new ByteArrayBuilder();
@@ -1053,7 +1045,7 @@
 
     // This commits the headers without checking the response status code.
     private void commitHeaders() {
-        if (mIsMainPageLoader && sCertificateTypeMap.containsKey(mMimeType)) {
+        if (mIsMainPageLoader && CertTool.getCertType(mMimeType) != null) {
             // In the case of downloading certificate, we will save it to the
             // KeyStore in commitLoad. Do not call webcore.
             return;
@@ -1114,7 +1106,7 @@
         }
 
         if (mIsMainPageLoader) {
-            String type = sCertificateTypeMap.get(mMimeType);
+            String type = CertTool.getCertType(mMimeType);
             if (type != null) {
                 // This must be synchronized so that no more data can be added
                 // after getByteSize returns.
diff --git a/core/res/res/drawable-hdpi/stat_sys_download_anim0.png b/core/res/res/drawable-hdpi/stat_sys_download_anim0.png
index 8858a75b..943e620 100644
--- a/core/res/res/drawable-hdpi/stat_sys_download_anim0.png
+++ b/core/res/res/drawable-hdpi/stat_sys_download_anim0.png
Binary files differ
diff --git a/core/res/res/drawable-hdpi/stat_sys_download_anim1.png b/core/res/res/drawable-hdpi/stat_sys_download_anim1.png
index 5418785..28edae1 100644
--- a/core/res/res/drawable-hdpi/stat_sys_download_anim1.png
+++ b/core/res/res/drawable-hdpi/stat_sys_download_anim1.png
Binary files differ
diff --git a/core/res/res/drawable-hdpi/stat_sys_download_anim2.png b/core/res/res/drawable-hdpi/stat_sys_download_anim2.png
index f55887e..556a46f 100644
--- a/core/res/res/drawable-hdpi/stat_sys_download_anim2.png
+++ b/core/res/res/drawable-hdpi/stat_sys_download_anim2.png
Binary files differ
diff --git a/core/res/res/drawable-hdpi/stat_sys_download_anim3.png b/core/res/res/drawable-hdpi/stat_sys_download_anim3.png
index 50fcc36..422d72b 100644
--- a/core/res/res/drawable-hdpi/stat_sys_download_anim3.png
+++ b/core/res/res/drawable-hdpi/stat_sys_download_anim3.png
Binary files differ
diff --git a/core/res/res/drawable-hdpi/stat_sys_download_anim4.png b/core/res/res/drawable-hdpi/stat_sys_download_anim4.png
index 65ac698..24a0db5 100644
--- a/core/res/res/drawable-hdpi/stat_sys_download_anim4.png
+++ b/core/res/res/drawable-hdpi/stat_sys_download_anim4.png
Binary files differ
diff --git a/core/res/res/drawable-hdpi/stat_sys_download_anim5.png b/core/res/res/drawable-hdpi/stat_sys_download_anim5.png
index 7fb6032..97e5a6b 100644
--- a/core/res/res/drawable-hdpi/stat_sys_download_anim5.png
+++ b/core/res/res/drawable-hdpi/stat_sys_download_anim5.png
Binary files differ
diff --git a/core/res/res/drawable-mdpi/stat_sys_download_anim0.png b/core/res/res/drawable-mdpi/stat_sys_download_anim0.png
index a326868..39e4ccb 100644
--- a/core/res/res/drawable-mdpi/stat_sys_download_anim0.png
+++ b/core/res/res/drawable-mdpi/stat_sys_download_anim0.png
Binary files differ
diff --git a/core/res/res/drawable-mdpi/stat_sys_download_anim1.png b/core/res/res/drawable-mdpi/stat_sys_download_anim1.png
index 42e5c2a..429ebd7 100644
--- a/core/res/res/drawable-mdpi/stat_sys_download_anim1.png
+++ b/core/res/res/drawable-mdpi/stat_sys_download_anim1.png
Binary files differ
diff --git a/core/res/res/drawable-mdpi/stat_sys_download_anim2.png b/core/res/res/drawable-mdpi/stat_sys_download_anim2.png
index 0c27622..b3de461 100644
--- a/core/res/res/drawable-mdpi/stat_sys_download_anim2.png
+++ b/core/res/res/drawable-mdpi/stat_sys_download_anim2.png
Binary files differ
diff --git a/core/res/res/drawable-mdpi/stat_sys_download_anim3.png b/core/res/res/drawable-mdpi/stat_sys_download_anim3.png
index b1b84d4..195498e 100644
--- a/core/res/res/drawable-mdpi/stat_sys_download_anim3.png
+++ b/core/res/res/drawable-mdpi/stat_sys_download_anim3.png
Binary files differ
diff --git a/core/res/res/drawable-mdpi/stat_sys_download_anim4.png b/core/res/res/drawable-mdpi/stat_sys_download_anim4.png
index 75cc99c..8fc3e86 100644
--- a/core/res/res/drawable-mdpi/stat_sys_download_anim4.png
+++ b/core/res/res/drawable-mdpi/stat_sys_download_anim4.png
Binary files differ
diff --git a/core/res/res/drawable-mdpi/stat_sys_download_anim5.png b/core/res/res/drawable-mdpi/stat_sys_download_anim5.png
index c21b6ac..c6f2f4e 100644
--- a/core/res/res/drawable-mdpi/stat_sys_download_anim5.png
+++ b/core/res/res/drawable-mdpi/stat_sys_download_anim5.png
Binary files differ