Route selection bounds updates through the compositor

content/renderer/render_widget.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_RENDERER_RENDER_WIDGET_H_
 #define CONTENT_RENDERER_RENDER_WIDGET_H_
 
 #include <deque>
 #include <map>
 
@@ skipping 225 matching lines @@
   void OnSwapBuffersAborted();
 
   // Checks if the text input state and compose inline mode have been changed.
   // If they are changed, the new value will be sent to the browser process.
   void UpdateTextInputType();
 
   // Checks if the selection bounds have been changed. If they are changed,
   // the new value will be sent to the browser process.
   void UpdateSelectionBounds();
 
-  virtual void GetSelectionBounds(gfx::Rect* start, gfx::Rect* end);
+  // Returns false if the selection bounds should not be updated.
+  virtual bool GetSelectionBounds(gfx::Rect* start, gfx::Rect* end);
 
   void OnShowHostContextMenu(ContextMenuParams* params);
 
 #if defined(OS_ANDROID) || defined(USE_AURA)
   enum ShowIme {
     SHOW_IME_IF_NEEDED,
     NO_SHOW_IME,
   };
 
   enum ChangeSource {
@@ skipping 354 matching lines @@
 
   // Stores the current text input mode of |webwidget_|.
   ui::TextInputMode text_input_mode_;
 
   // Stores the current type of composition text rendering of |webwidget_|.
   bool can_compose_inline_;
 
   // Stores the current selection bounds.
   gfx::Rect selection_focus_rect_;
   gfx::Rect selection_anchor_rect_;
+  bool enable_composited_selection_bounds_;
 
   // Stores the current composition character bounds.
   std::vector<gfx::Rect> composition_character_bounds_;
 
   // Stores the current composition range.
   gfx::Range composition_range_;
 
   // The kind of popup this widget represents, NONE if not a popup.
   blink::WebPopupType popup_type_;
 
@@ skipping 81 matching lines @@
 
   ui::MenuSourceType context_menu_source_type_;
   gfx::Point touch_editing_context_menu_location_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidget);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_WIDGET_H_