gfx: Make conversions from gfx::Point to PointF explicit.

cc/test/layer_tree_pixel_test.cc

 // Copyright 2013 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 "cc/test/layer_tree_pixel_test.h"
 
 #include "base/command_line.h"
 #include "base/path_service.h"
 #include "cc/base/switches.h"
 #include "cc/layers/solid_color_layer.h"
@@ skipping 104 matching lines @@
                              ref_file_path,
                              *pixel_comparator_));
 }
 
 scoped_refptr<SolidColorLayer> LayerTreePixelTest::CreateSolidColorLayer(
     const gfx::Rect& rect, SkColor color) {
   scoped_refptr<SolidColorLayer> layer =
       SolidColorLayer::Create(layer_settings());
   layer->SetIsDrawable(true);
   layer->SetBounds(rect.size());
-  layer->SetPosition(rect.origin());
+  layer->SetPosition(gfx::PointF(rect.origin()));
   layer->SetBackgroundColor(color);
   return layer;
 }
 
 void LayerTreePixelTest::EndTest() {
   // Drop TextureMailboxes on the main thread so that they can be cleaned up and
   // the pending callbacks will fire.
   for (size_t i = 0; i < texture_layers_.size(); ++i) {
     texture_layers_[i]->SetTextureMailbox(TextureMailbox(), nullptr);
   }
@@ skipping 37 matching lines @@
   layer->AddChild(border_bottom);
   return layer;
 }
 
 scoped_refptr<TextureLayer> LayerTreePixelTest::CreateTextureLayer(
     const gfx::Rect& rect, const SkBitmap& bitmap) {
   scoped_refptr<TextureLayer> layer =
       TextureLayer::CreateForMailbox(layer_settings(), NULL);
   layer->SetIsDrawable(true);
   layer->SetBounds(rect.size());
-  layer->SetPosition(rect.origin());
+  layer->SetPosition(gfx::PointF(rect.origin()));
 
   TextureMailbox texture_mailbox;
   scoped_ptr<SingleReleaseCallback> release_callback;
   CopyBitmapToTextureMailboxAsTexture(
       bitmap, &texture_mailbox, &release_callback);
   layer->SetTextureMailbox(texture_mailbox, release_callback.Pass());
 
   texture_layers_.push_back(layer);
   pending_texture_mailbox_callbacks_++;
   return layer;
@@ skipping 187 matching lines @@
                  texture_id));
 }
 
 void LayerTreePixelTest::Finish() {
   scoped_ptr<gpu::GLInProcessContext> context = CreateTestInProcessContext();
   GLES2Interface* gl = context->GetImplementation();
   gl->Finish();
 }
 
 }  // namespace cc