Replace overdraw_bottom_height with top_controls_layout_height.

cc/trees/layer_tree_host_impl.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_IMPL_H_
 #define CC_TREES_LAYER_TREE_HOST_IMPL_H_
 
 #include <list>
 #include <set>
 #include <string>
@@ skipping 209 matching lines @@
 
   DrawMode GetDrawMode() const;
 
   // Viewport size in draw space: this size is in physical pixels and is used
   // for draw properties, tilings, quads and render passes.
   gfx::Size DrawViewportSize() const;
 
   // Viewport rect in view space used for tiling prioritization.
   const gfx::Rect ViewportRectForTilePriority() const;
 
-  // Viewport size for scrolling and fixed-position compensation. This value
-  // excludes the URL bar and non-overlay scrollbars and is in DIP (and
-  // invariant relative to page scale).
-  gfx::SizeF UnscaledScrollableViewportSize() const;
-  float VerticalAdjust() const;
-
   // RendererClient implementation.
   virtual void SetFullRootLayerDamage() OVERRIDE;
   virtual void RunOnDemandRasterTask(Task* on_demand_raster_task) OVERRIDE;
 
   // TileManagerClient implementation.
   virtual const std::vector<PictureLayerImpl*>& GetPictureLayers()
       const OVERRIDE;
   virtual void NotifyReadyToActivate() OVERRIDE;
   virtual void NotifyTileStateChanged(const Tile* tile) OVERRIDE;
   virtual void BuildRasterQueue(RasterTilePriorityQueue* queue,
@@ skipping 97 matching lines @@
   void SetNeedsRedraw();
 
   ManagedMemoryPolicy ActualManagedMemoryPolicy() const;
 
   size_t memory_allocation_limit_bytes() const;
   int memory_allocation_priority_cutoff() const;
 
   void SetViewportSize(const gfx::Size& device_viewport_size);
   gfx::Size device_viewport_size() const { return device_viewport_size_; }
 
-  void SetOverdrawBottomHeight(float overdraw_bottom_height);
-  float overdraw_bottom_height() const { return overdraw_bottom_height_; }
+  void SetTopControlsLayoutHeight(float top_controls_layout_height);
+  float top_controls_layout_height() const {
+    return top_controls_layout_height_;
+  }
 
   void SetOverhangUIResource(UIResourceId overhang_ui_resource_id,
                              const gfx::Size& overhang_ui_resource_size);
 
   void SetDeviceScaleFactor(float device_scale_factor);
   float device_scale_factor() const { return device_scale_factor_; }
 
   const gfx::Transform& DrawTransform() const;
 
   scoped_ptr<ScrollAndScaleSet> ProcessScrollDeltas();
@@ skipping 127 matching lines @@
 
  protected:
   LayerTreeHostImpl(
       const LayerTreeSettings& settings,
       LayerTreeHostImplClient* client,
       Proxy* proxy,
       RenderingStatsInstrumentation* rendering_stats_instrumentation,
       SharedBitmapManager* manager,
       int id);
 
-  gfx::SizeF ComputeInnerViewportContainerSize() const;
   void UpdateInnerViewportContainerSize();
 
   // Virtual for testing.
   virtual void AnimateLayers(base::TimeTicks monotonic_time);
 
   // Virtual for testing.
   virtual base::TimeDelta LowFrequencyAnimationInterval() const;
 
   const AnimationRegistrar::AnimationControllerMap&
       active_animation_controllers() const {
@@ skipping 155 matching lines @@
   gfx::Size device_viewport_size_;
 
   // Conversion factor from CSS pixels to physical pixels when
   // pageScaleFactor=1.
   float device_scale_factor_;
 
   // UI resource to use for drawing overhang gutters.
   UIResourceId overhang_ui_resource_id_;
   gfx::Size overhang_ui_resource_size_;
 
-  // Vertical amount of the viewport size that's known to covered by a
-  // browser-side UI element, such as an on-screen-keyboard.  This affects
-  // scrollable size since we want to still be able to scroll to the bottom of
-  // the page when the keyboard is up.
-  float overdraw_bottom_height_;
+  // Height of the top controls as known by Blink.
+  float top_controls_layout_height_;
 
   // Optional top-level constraints that can be set by the OutputSurface.
   // - external_transform_ applies a transform above the root layer
   // - external_viewport_ is used DrawProperties, tile management and
   // glViewport/window projection matrix.
   // - external_clip_ specifies a top-level clip rect
   // - viewport_rect_for_tile_priority_ is the rect in view space used for
   // tiling priority.
   gfx::Transform external_transform_;
   gfx::Rect external_viewport_;
@@ skipping 28 matching lines @@
 
   std::vector<PictureLayerImpl*> picture_layers_;
   std::vector<PictureLayerImpl::Pair> picture_layer_pairs_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerTreeHostImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_HOST_IMPL_H_