Tab switcher animation

    Bug: 5123884

    first step towards animations between browser and tab switcher

Change-Id: I1d959d42d0036f3c4498972fcc8ad434fa7f4437
diff --git a/src/com/android/browser/Tab.java b/src/com/android/browser/Tab.java
index 78ae987..c6808e0 100644
--- a/src/com/android/browser/Tab.java
+++ b/src/com/android/browser/Tab.java
@@ -31,6 +31,7 @@
 import android.graphics.Bitmap.CompressFormat;
 import android.graphics.BitmapFactory;
 import android.graphics.Canvas;
+import android.graphics.Color;
 import android.graphics.Picture;
 import android.net.Uri;
 import android.net.http.SslError;
@@ -1455,6 +1456,7 @@
                 if (mCapture == null) {
                     mCapture = Bitmap.createBitmap(mCaptureWidth, mCaptureHeight,
                             Bitmap.Config.RGB_565);
+                    mCapture.eraseColor(Color.WHITE);
                     if (mInForeground) {
                         postCapture();
                     }