Very basic Android browser-side compositing support.

content/browser/renderer_host/render_widget_host_view_android.h

Index: content/browser/renderer_host/render_widget_host_view_android.h
diff --git a/content/browser/renderer_host/render_widget_host_view_android.h b/content/browser/renderer_host/render_widget_host_view_android.h
index f2187d8000159ef303454742e59003f7fa1b2025..880ca1670f9d31bc4972ad6d81ebaf8f4fff093d 100644
--- a/content/browser/renderer_host/render_widget_host_view_android.h
+++ b/content/browser/renderer_host/render_widget_host_view_android.h
@@ -9,6 +9,7 @@
 #include "base/i18n/rtl.h"
 #include "base/process.h"
 #include "content/browser/renderer_host/render_widget_host_view_base.h"
+#include "third_party/WebKit/Source/Platform/chromium/public/WebExternalTextureLayer.h"
 #include "ui/gfx/size.h"
 
 struct ViewHostMsg_TextInputState_Params;
@@ -123,6 +124,9 @@ class RenderWidgetHostViewAndroid : public RenderWidgetHostViewBase {
   // variable because resizing is async.
   gfx::Size requested_size_;
 
+  // The texture layer for this view when using browser-side compositing.
+  WebKit::WebExternalTextureLayer texture_layer_;
+
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewAndroid);
 };