Very basic Android browser-side compositing support.

content/shell/android/shell_manager.h

Index: content/shell/android/shell_manager.h
diff --git a/content/shell/android/shell_manager.h b/content/shell/android/shell_manager.h
index 640d98e1a4411589146f332849dcf36b111334f5..7dcbc341b696b7615fc1500b2dd6c467801098e1 100644
--- a/content/shell/android/shell_manager.h
+++ b/content/shell/android/shell_manager.h
@@ -10,6 +10,10 @@
 #include "base/android/jni_android.h"
 #include "base/android/scoped_java_ref.h"
 
+namespace WebKit {
+class WebLayer;
+}
+
 namespace content {
 
 // Creates an Android specific shell view, which is our version of a shell
@@ -21,6 +25,8 @@ jobject CreateShellView();
 // Registers the ShellManager native methods.
 bool RegisterShellManager(JNIEnv* env);
 
+void ShellAttachLayer(WebKit::WebLayer* layer);
+void ShellRemoveLayer(WebKit::WebLayer* layer);
 }  // namespace content
 
 #endif  // CONTENT_SHELL_ANDROID_SHELL_MANAGER_H_