cc: Remove implicit conversions from Rect to RectF in src/cc/.

cc/layers/render_surface_impl.cc

Index: cc/layers/render_surface_impl.cc
diff --git a/cc/layers/render_surface_impl.cc b/cc/layers/render_surface_impl.cc
index 0b428dcc571854d187ad57dfa1772e917e4f783e..c10f697c796279dc98cb3d3b80544286a3474a0e 100644
--- a/cc/layers/render_surface_impl.cc
+++ b/cc/layers/render_surface_impl.cc
@@ -41,10 +41,10 @@ RenderSurfaceImpl::~RenderSurfaceImpl() {}
 
 gfx::RectF RenderSurfaceImpl::DrawableContentRect() const {
   gfx::RectF drawable_content_rect =
-      MathUtil::MapClippedRect(draw_transform_, content_rect_);
+      MathUtil::MapClippedRect(draw_transform_, gfx::RectF(content_rect_));
   if (owning_layer_->has_replica()) {
-    drawable_content_rect.Union(
-        MathUtil::MapClippedRect(replica_draw_transform_, content_rect_));
+    drawable_content_rect.Union(MathUtil::MapClippedRect(
+        replica_draw_transform_, gfx::RectF(content_rect_)));
   }
 
   return drawable_content_rect;