Converted LayerImpl::bounds() to return SizeF.

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 68d24bac812427a2c71412012c934ba6127a146f..d86aef7f4910c3cc9c6b80178352e0991196dd92 100644
--- a/cc/layers/picture_layer.cc
+++ b/cc/layers/picture_layer.cc
@@ -9,6 +9,7 @@
 #include "cc/layers/picture_layer_impl.h"
 #include "cc/trees/layer_tree_impl.h"
 #include "third_party/skia/include/core/SkPictureRecorder.h"
+#include "ui/gfx/geometry/size_conversions.h"
 #include "ui/gfx/rect_conversions.h"
 
 namespace cc {
@@ -46,7 +47,8 @@ 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_size().ToString());
+    DCHECK_EQ(gfx::ToCeiledSize(layer_impl->bounds()).ToString(),
+              pile_->tiling_size().ToString());
   }
 
   // Unlike other properties, invalidation must always be set on layer_impl.