Add tab reparenting

chrome/android/java/src/org/chromium/chrome/browser/compositor/CompositorViewHolder.java

Index: chrome/android/java/src/org/chromium/chrome/browser/compositor/CompositorViewHolder.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/compositor/CompositorViewHolder.java b/chrome/android/java/src/org/chromium/chrome/browser/compositor/CompositorViewHolder.java
index 7f881ebb9ef2577811ee7fc042eba32dba94460d..12f8a188d76eeae1a79ad83c17c0b22925d62038 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/compositor/CompositorViewHolder.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/compositor/CompositorViewHolder.java
@@ -304,6 +304,15 @@ public class CompositorViewHolder extends FrameLayout
         }
     }
 
+    /**
+     * Perform any initialization necessary for showing a reparented tab.
+     */
+    public void onActiveTabReparented() {

[Ted C, 2016/02/25 20:05:21]

I would call this prepareForTabReparenting or something.

[Yusuf, 2016/02/25 23:04:59]

Done.

+        // Set the background to white while we wait for the first swap of buffers. This gets
+        // corrected inside the view.
+        mCompositorView.setBackgroundColor(Color.WHITE);
+    }
+
     @Override
     public ResourceManager getResourceManager() {
         return mCompositorView.getResourceManager();