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

cc/trees/layer_tree_host_pixeltest_synchronous.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "build/build_config.h"
 #include "cc/layers/content_layer_client.h"
 #include "cc/layers/picture_image_layer.h"
 #include "cc/layers/picture_layer.h"
 #include "cc/layers/solid_color_layer.h"
 #include "cc/test/fake_content_layer_client.h"
@@ skipping 18 matching lines @@
     PostCompositeImmediatelyToMainThread();
   }
 };
 
 TEST_F(LayerTreeHostSynchronousPixelTest, OneContentLayer) {
   gfx::Size bounds(200, 200);
 
   FakeContentLayerClient client;
   SkPaint green_paint;
   green_paint.setColor(SkColorSetARGB(255, 0, 255, 0));
-  client.add_draw_rect(gfx::RectF(bounds), green_paint);
+  client.add_draw_rect(gfx::Rect(bounds), green_paint);
   scoped_refptr<PictureLayer> root =
       PictureLayer::Create(layer_settings(), &client);
   root->SetBounds(bounds);
   root->SetIsDrawable(true);
 
   RunSingleThreadedPixelTest(
       PIXEL_TEST_GL, root, base::FilePath(FILE_PATH_LITERAL("green.png")));
 }
 
 class LayerTreeHostSynchronousGPUPixelTest : public LayerTreePixelTest {
@@ skipping 10 matching lines @@
     PostCompositeImmediatelyToMainThread();
   }
 };
 
 TEST_F(LayerTreeHostSynchronousGPUPixelTest, OneContentLayer) {
   gfx::Size bounds(200, 200);
 
   FakeContentLayerClient client;
   SkPaint green_paint;
   green_paint.setColor(SkColorSetARGB(255, 0, 255, 0));
-  client.add_draw_rect(gfx::RectF(bounds), green_paint);
+  client.add_draw_rect(gfx::Rect(bounds), green_paint);
   scoped_refptr<PictureLayer> root =
       PictureLayer::Create(layer_settings(), &client);
   root->SetBounds(bounds);
   root->SetIsDrawable(true);
 
   RunSingleThreadedPixelTest(PIXEL_TEST_GL, root,
                              base::FilePath(FILE_PATH_LITERAL("green.png")));
 }
 
 }  // namespace
 }  // namespace cc
 
 #endif  // OS_ANDROID