Allow changing top controls height

content/browser/renderer_host/render_widget_host_view_base.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_VIEW_BASE_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_BASE_H_
 
 #if defined(OS_MACOSX)
 #include <OpenGL/OpenGL.h>
 #endif
@@ skipping 102 matching lines @@
                                 size_t offset,
                                 const gfx::Range& range);
 
   // The requested size of the renderer. May differ from GetViewBounds().size()
   // when the view requires additional throttling.
   virtual gfx::Size GetRequestedRendererSize() const;
 
   // The size of the view's backing surface in non-DPI-adjusted pixels.
   virtual gfx::Size GetPhysicalBackingSize() const;
 
-  // The amount that the viewport size given to Blink is shrunk by the URL-bar.
-  virtual float GetTopControlsLayoutHeight() const;
+  // Whether or not Blink's viewport size should be shrunk by the height of the
+  // URL-bar.
+  virtual bool DoTopControlsShrinkBlinkSize() const;
+
+  // The height of the URL-bar top controls.
+  virtual float GetTopControlsHeight() const;
 
   // Called prior to forwarding input event messages to the renderer, giving
   // the view a chance to perform in-process event filtering or processing.
   // Return values of |NOT_CONSUMED| or |UNKNOWN| will result in |input_event|
   // being forwarded.
   virtual InputEventAckState FilterInputEvent(
       const blink::WebInputEvent& input_event);
 
   // Called by the host when it requires an input flush; the flush call should
   // by synchronized with BeginFrame.
@@ skipping 284 matching lines @@
   base::OneShotTimer<RenderWidgetHostViewBase> flush_input_timer_;
 
   base::WeakPtrFactory<RenderWidgetHostViewBase> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewBase);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_BASE_H_