Made Blink aware of top controls offset (Chromium-side)

cc/trees/layer_tree_host.h

 // Copyright 2011 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 CC_TREES_LAYER_TREE_HOST_H_
 #define CC_TREES_LAYER_TREE_HOST_H_
 
 #include <limits>
 #include <list>
 #include <set>
@@ skipping 178 matching lines @@
   void SetDebugState(const LayerTreeDebugState& debug_state);
   const LayerTreeDebugState& debug_state() const { return debug_state_; }
 
   bool has_gpu_rasterization_trigger() const {
     return has_gpu_rasterization_trigger_;
   }
   void SetHasGpuRasterizationTrigger(bool has_trigger);
   bool UseGpuRasterization() const;
 
   void SetViewportSize(const gfx::Size& device_viewport_size);
-  void SetTopControlsLayoutHeight(float top_controls_layout_height);
+  void SetTopControlsLayoutHeight(float height);
+  void SetTopControlsContentOffset(float offset);
 
   gfx::Size device_viewport_size() const { return device_viewport_size_; }
 
   void ApplyPageScaleDeltaFromImplSide(float page_scale_delta);
   void SetPageScaleFactorAndLimits(float page_scale_factor,
                                    float min_page_scale_factor,
                                    float max_page_scale_factor);
   float page_scale_factor() const { return page_scale_factor_; }
 
   SkColor background_color() const { return background_color_; }
@@ skipping 171 matching lines @@
   scoped_ptr<PrioritizedResource> surface_memory_placeholder_;
 
   base::WeakPtr<InputHandler> input_handler_weak_ptr_;
   base::WeakPtr<TopControlsManager> top_controls_manager_weak_ptr_;
 
   const LayerTreeSettings settings_;
   LayerTreeDebugState debug_state_;
 
   gfx::Size device_viewport_size_;
   float top_controls_layout_height_;
+  float top_controls_content_offset_;
   float device_scale_factor_;
 
   bool visible_;
 
   base::OneShotTimer<LayerTreeHost> rate_limit_timer_;
 
   float page_scale_factor_;
   float min_page_scale_factor_;
   float max_page_scale_factor_;
   gfx::Transform impl_transform_;
@@ skipping 52 matching lines @@
 
   ScopedPtrVector<SwapPromise> swap_promise_list_;
   std::set<SwapPromiseMonitor*> swap_promise_monitor_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerTreeHost);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_HOST_H_