Remove most remaining references to IntRect and FloatRect.

cc/layer_tree_host.h

Index: cc/layer_tree_host.h
diff --git a/cc/layer_tree_host.h b/cc/layer_tree_host.h
index a660e278bf3bf51dac800c8583da7867c969e857..b34095acfdffd4c723b4435ecad62a98f9d7ffbf 100644
--- a/cc/layer_tree_host.h
+++ b/cc/layer_tree_host.h
@@ -40,7 +40,6 @@ struct hash<WebKit::WebGraphicsContext3D*> {
 namespace cc {
 
 class FontAtlas;
-class IntRect;
 class Layer;
 class LayerTreeHostImpl;
 class LayerTreeHostImplClient;
@@ -141,7 +140,7 @@ public:
     // Composites and attempts to read back the result into the provided
     // buffer. If it wasn't possible, e.g. due to context lost, will return
     // false.
-    bool compositeAndReadback(void *pixels, const IntRect&);
+    bool compositeAndReadback(void *pixels, const gfx::Rect&);
 
     void finishAllRendering();