cc: Give TilingData back a Size instead of a Rect.

cc/layers/picture_layer.cc

Index: cc/layers/picture_layer.cc
diff --git a/cc/layers/picture_layer.cc b/cc/layers/picture_layer.cc
index 271f7226fceba2fee472b66dd852927165abec81..b9f265a02a4b15d29cb7ba7f85e18e56f0454b31 100644
--- a/cc/layers/picture_layer.cc
+++ b/cc/layers/picture_layer.cc
@@ -50,8 +50,7 @@ void PictureLayer::PushPropertiesTo(LayerImpl* base_layer) {
     // TODO(ernstm): This DCHECK is only valid as long as the pile's tiling_rect
     // is identical to the layer_rect.
     // If update called, then pile size must match bounds pushed to impl layer.
-    DCHECK_EQ(layer_impl->bounds().ToString(),
-              pile_->tiling_rect().size().ToString());
+    DCHECK_EQ(layer_impl->bounds().ToString(), pile_->tiling_size().ToString());
   }
 
   layer_impl->SetIsMask(is_mask_);
@@ -94,11 +93,10 @@ bool PictureLayer::Update(ResourceUpdateQueue* queue,
 
   gfx::Rect visible_layer_rect = gfx::ScaleToEnclosingRect(
       visible_content_rect(), 1.f / contents_scale_x());
-
-  gfx::Rect layer_rect = gfx::Rect(paint_properties().bounds);
+  gfx::Size layer_size = paint_properties().bounds;
 
   if (last_updated_visible_content_rect_ == visible_content_rect() &&
-      pile_->tiling_rect() == layer_rect && pending_invalidation_.IsEmpty()) {
+      pile_->tiling_size() == layer_size && pending_invalidation_.IsEmpty()) {
     // Only early out if the visible content rect of this layer hasn't changed.
     return updated;
   }
@@ -117,7 +115,7 @@ bool PictureLayer::Update(ResourceUpdateQueue* queue,
   if (layer_tree_host()->settings().record_full_layer) {
     // Workaround for http://crbug.com/235910 - to retain backwards compat
     // the full page content must always be provided in the picture layer.
-    visible_layer_rect = gfx::Rect(bounds());
+    visible_layer_rect = gfx::Rect(layer_size);
   }
 
   // UpdateAndExpandInvalidation will give us an invalidation that covers
@@ -131,7 +129,7 @@ bool PictureLayer::Update(ResourceUpdateQueue* queue,
                                          SafeOpaqueBackgroundColor(),
                                          contents_opaque(),
                                          client_->FillsBoundsCompletely(),
-                                         layer_rect,
+                                         layer_size,
                                          visible_layer_rect,
                                          update_source_frame_number_,
                                          RecordingMode(),