Very basic Android browser-side compositing support.

content/shell/shell_android.cc

Index: content/shell/shell_android.cc
diff --git a/content/shell/shell_android.cc b/content/shell/shell_android.cc
index db407f60badca36848f4351301e915c785c40ecb..859184ba946c593e23d8e66ec8fe7feaee4f3311 100644
--- a/content/shell/shell_android.cc
+++ b/content/shell/shell_android.cc
@@ -70,6 +70,14 @@ void Shell::Close() {
   NOTIMPLEMENTED();
 }
 
+void Shell::AttachLayer(WebContents* web_contents, WebKit::WebLayer* layer) {
+  ShellAttachLayer(layer);
+}
+
+void Shell::RemoveLayer(WebContents* web_contents, WebKit::WebLayer* layer) {
+  ShellRemoveLayer(layer);
+}
+
 // static
 bool Shell::Register(JNIEnv* env) {
   return RegisterNativesImpl(env);