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

cc/tiles/picture_layer_tiling_unittest.cc

Index: cc/tiles/picture_layer_tiling_unittest.cc
diff --git a/cc/tiles/picture_layer_tiling_unittest.cc b/cc/tiles/picture_layer_tiling_unittest.cc
index 11bdb84192b84a9a6900f05df99ed91524a2dd9f..971b7e2fadb64e200fa92a0b20b4e0bbd1f87c8b 100644
--- a/cc/tiles/picture_layer_tiling_unittest.cc
+++ b/cc/tiles/picture_layer_tiling_unittest.cc
@@ -807,7 +807,7 @@ TEST(PictureLayerTilingTest, ViewportDistanceWithScale) {
                                          settings);
   tiling->set_resolution(HIGH_RESOLUTION);
   gfx::Rect viewport_in_content_space =
-      gfx::ToEnclosedRect(gfx::ScaleRect(viewport, 0.25f));
+      gfx::ScaleToEnclosedRect(viewport, 0.25f);
 
   tiling->ComputeTilePriorityRects(viewport, 1.f, 1.0, Occlusion());
   auto prioritized_tiles = tiling->UpdateAndGetAllPrioritizedTilesForTesting();
@@ -882,8 +882,7 @@ TEST(PictureLayerTilingTest, ViewportDistanceWithScale) {
 
   // Move the viewport down 40 pixels.
   viewport = gfx::Rect(0, 40, 100, 100);
-  viewport_in_content_space =
-      gfx::ToEnclosedRect(gfx::ScaleRect(viewport, 0.25f));
+  viewport_in_content_space = gfx::ScaleToEnclosedRect(viewport, 0.25f);
   gfx::Rect skewport = tiling->ComputeSkewport(2.0, viewport_in_content_space);
 
   // Compute the soon border.