Cleaning up compositing field trial code and enable FCM in beta/stable

content/browser/renderer_host/render_widget_host_impl.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_
 
 #include <deque>
 #include <string>
 #include <vector>
@@ skipping 611 matching lines @@
 
   // Indicates whether a page is hidden or not.
   bool is_hidden_;
 
   // Indicates whether a page is fullscreen or not.
   bool is_fullscreen_;
 
   // True when a page is rendered directly via the GPU process.
   bool is_accelerated_compositing_active_;
 
+  // True if threaded compositing is enabled on this view.
+  bool is_threaded_compositing_enabled_;
+
   // Set if we are waiting for a repaint ack for the view.
   bool repaint_ack_pending_;
 
   // True when waiting for RESIZE_ACK.
   bool resize_ack_pending_;
 
   // The current size of the RenderWidget.
   gfx::Size current_size_;
 
   // The size we last sent as requested size to the renderer. |current_size_|
@@ skipping 136 matching lines @@
   scoped_ptr<TapSuppressionController> tap_suppression_controller_;
 
   scoped_ptr<SmoothScrollGesture> active_smooth_scroll_gesture_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_