gfx: Make conversions from Size to SizeF be explicit.

ui/views/animation/ink_drop_animation.cc

 // Copyright 2015 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 "ui/views/animation/ink_drop_animation.h"
 
 #include <algorithm>
 
 #include "base/command_line.h"
 #include "base/logging.h"
@@ skipping 352 matching lines @@
 void InkDropAnimation::SetTransforms(const InkDropTransforms transforms) {
   for (int i = 0; i < PAINTED_SHAPE_COUNT; ++i)
     painted_layers_[i]->SetTransform(transforms[i]);
 }
 
 void InkDropAnimation::SetOpacity(float opacity) {
   root_layer_->SetOpacity(opacity);
 }
 
 void InkDropAnimation::CalculateCircleTransforms(
-    const gfx::SizeF& size,
+    const gfx::Size& size,
     InkDropTransforms* transforms_out) const {
   CalculateRectTransforms(size, std::min(size.width(), size.height()) / 2.0f,
                           transforms_out);
 }
 
 void InkDropAnimation::CalculateRectTransforms(
-    const gfx::SizeF& size,
+    const gfx::Size& size,
     float corner_radius,
     InkDropTransforms* transforms_out) const {
   DCHECK_GE(size.width() / 2.0f, corner_radius)
       << "The circle's diameter should not be greater than the total width.";
   DCHECK_GE(size.height() / 2.0f, corner_radius)
       << "The circle's diameter should not be greater than the total height.";
 
   // The shapes are drawn such that their center points are not at the origin.
   // Thus we use the CalculateCircleTransform() and CalculateRectTransform()
   // methods to calculate the complex Transforms.
@@ skipping 76 matching lines @@
   layer->SetFillsBoundsOpaquely(false);
   layer->set_delegate(delegate);
   layer->SetVisible(true);
   layer->SetOpacity(1.0);
   layer->SetMasksToBounds(false);
 
   painted_layers_[painted_shape].reset(layer);
 }
 
 }  // namespace views