Remove most remaining references to IntRect and FloatRect.

cc/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 CCLayerTreeHostImpl_h
 #define CCLayerTreeHostImpl_h
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/time.h"
@@ skipping 65 matching lines @@
 
     // Returns the bounds and offset of the scaled and translated viewport to use for pinch-zoom.
     gfx::RectF bounds() const;
     const FloatPoint& scrollDelta() const { return m_pinchViewportScrollDelta; }
 
     void setLayoutViewportSize(const gfx::SizeF& size) { m_layoutViewportSize = size; }
 
     // Apply the scroll offset in layout space to the offset of the pinch-zoom viewport. The viewport cannot be
     // scrolled outside of the layout viewport bounds. Returns the component of the scroll that is un-applied due to
     // this constraint.
-    FloatSize applyScroll(FloatSize&);
+    FloatSize applyScroll(const gfx::Vector2dF&);
 
     WebKit::WebTransformationMatrix implTransform() const;
 
 private:
     float m_pageScaleFactor;
     float m_pageScaleDelta;
     float m_sentPageScaleDelta;
     float m_maxPageScaleFactor;
     float m_minPageScaleFactor;
 
@@ skipping 255 matching lines @@
 
     size_t m_numImplThreadScrolls;
     size_t m_numMainThreadScrolls;
 
     DISALLOW_COPY_AND_ASSIGN(LayerTreeHostImpl);
 };
 
 }  // namespace cc
 
 #endif