Remove most remaining references to IntRect and FloatRect.

cc/occlusion_tracker.h

 // Copyright 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 CCOcclusionTracker_h
 #define CCOcclusionTracker_h
 
 #include "FloatQuad.h"
 #include "Region.h"
 #include "base/basictypes.h"
@@ skipping 28 matching lines @@
     gfx::Rect unoccludedContentRect(const LayerType* renderTarget, const gfx::Rect& contentRect, const WebKit::WebTransformationMatrix& drawTransform, bool implDrawTransformIsUnknown, const gfx::Rect& clippedRectInTarget, bool* hasOcclusionFromOutsideTargetSurface = 0) const;
 
     // Gives an unoccluded sub-rect of |contentRect| in the content space of the renderTarget owned by the layer.
     // Used when considering occlusion for a contributing surface that is rendering into another target.
     gfx::Rect unoccludedContributingSurfaceContentRect(const LayerType*, bool forReplica, const gfx::Rect& contentRect, bool* hasOcclusionFromOutsideTargetSurface = 0) const;
 
     // Report operations for recording overdraw metrics.
     OverdrawMetrics& overdrawMetrics() const { return *m_overdrawMetrics.get(); }
 
     // Gives the region of the screen that is not occluded by something opaque.
-    Region computeVisibleRegionInScreen() const { return subtract(Region(cc::IntRect(m_rootTargetRect)), m_stack.last().occlusionInScreen); }
+    Region computeVisibleRegionInScreen() const { return subtract(Region(m_rootTargetRect), m_stack.last().occlusionInScreen); }
 
     void setMinimumTrackingSize(const gfx::Size& size) { m_minimumTrackingSize = size; }
 
     // The following is used for visualization purposes. 
     void setOccludingScreenSpaceRectsContainer(std::vector<gfx::Rect>* rects) { m_occludingScreenSpaceRects = rects; }
 
 protected:
     struct StackObject {
         StackObject() : target(0) { }
         StackObject(const LayerType* target) : target(target) { }
@@ skipping 38 matching lines @@
 
     DISALLOW_COPY_AND_ASSIGN(OcclusionTrackerBase);
 };
 
 typedef OcclusionTrackerBase<Layer, RenderSurface> OcclusionTracker;
 typedef OcclusionTrackerBase<LayerImpl, RenderSurfaceImpl> OcclusionTrackerImpl;
 
 }  // namespace cc
 
 #endif // CCOcclusionTracker_h