AAPT: Copy android:revisionCode to Splits

Bug:18706179
Change-Id: I669b56e0b67dd1bfda7749ef433b55af16851154
diff --git a/tools/aapt/Resource.cpp b/tools/aapt/Resource.cpp
index e3a0200..e2e83e4 100644
--- a/tools/aapt/Resource.cpp
+++ b/tools/aapt/Resource.cpp
@@ -257,6 +257,11 @@
 
     assets->setPackage(String8(block.getAttributeStringValue(nameIndex, &len)));
 
+    ssize_t revisionCodeIndex = block.indexOfAttribute(RESOURCES_ANDROID_NAMESPACE, "revisionCode");
+    if (revisionCodeIndex >= 0) {
+        bundle->setRevisionCode(String8(block.getAttributeStringValue(revisionCodeIndex, &len)).string());
+    }
+
     String16 uses_sdk16("uses-sdk");
     while ((code=block.next()) != ResXMLTree::END_DOCUMENT
            && code != ResXMLTree::BAD_DOCUMENT) {
@@ -1075,6 +1080,14 @@
         return UNKNOWN_ERROR;
     }
 
+    // Add the 'revisionCode' attribute, which is set to the original revisionCode.
+    if (bundle->getRevisionCode().size() > 0) {
+        if (!addTagAttribute(manifest, RESOURCES_ANDROID_NAMESPACE, "revisionCode",
+                    bundle->getRevisionCode().string(), true, true)) {
+            return UNKNOWN_ERROR;
+        }
+    }
+
     // Add the 'split' attribute which describes the configurations included.
     String8 splitName("config.");
     splitName.append(split->getPackageSafeName());