Revert 110783 - Adds a bounds parameter to ui::Compositor::ReadPixels

ui/gfx/compositor/compositor.h

Index: ui/gfx/compositor/compositor.h
===================================================================
--- ui/gfx/compositor/compositor.h	(revision 110784)
+++ ui/gfx/compositor/compositor.h	(working copy)
@@ -136,10 +136,9 @@
   // compositing.
   void Draw(bool force_clear);
 
-  // Reads the region |bounds| of the contents of the last rendered frame
-  // into the given bitmap.
+  // Reads the contents of the last rendered frame into the given bitmap.
   // Returns false if the pixels could not be read.
-  virtual bool ReadPixels(SkBitmap* bitmap, const gfx::Rect& bounds) = 0;
+  virtual bool ReadPixels(SkBitmap* bitmap) = 0;
 
   // Notifies the compositor that the size of the widget that it is
   // drawing to has changed.