ui: Make gfx::Size::Scale() mutate the class. Add gfx::ScaleSize() similar to Rect/Point.

content/renderer/render_widget_fullscreen_pepper.cc

 // Copyright (c) 2012 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 "content/renderer/render_widget_fullscreen_pepper.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 490 matching lines @@
           paint_bounds, dib, location, clip, scale_factor)) {
     return plugin_;
   }
   return NULL;
 }
 
 void RenderWidgetFullscreenPepper::OnResize(const gfx::Size& size,
                                             const gfx::Rect& resizer_rect,
                                             bool is_fullscreen) {
   if (context_) {
-    gfx::Size pixel_size = gfx::ToFlooredSize(size.Scale(deviceScaleFactor()));
+    gfx::Size pixel_size = gfx::ToFlooredSize(
+        gfx::ScaleSize(size, deviceScaleFactor()));
     context_->reshape(pixel_size.width(), pixel_size.height());
     context_->viewport(0, 0, pixel_size.width(), pixel_size.height());
   }
   RenderWidget::OnResize(size, resizer_rect, is_fullscreen);
 }
 
 WebWidget* RenderWidgetFullscreenPepper::CreateWebWidget() {
   return new PepperWidget(this);
 }
 
@@ skipping 72 matching lines @@
 
 const float kTexCoords[] = {
     0.f, 0.f,
     0.f, 2.f,
     2.f, 0.f,
 };
 
 }  // anonymous namespace
 
 bool RenderWidgetFullscreenPepper::InitContext() {
-  gfx::Size pixel_size = gfx::ToFlooredSize(size().Scale(deviceScaleFactor()));
+  gfx::Size pixel_size = gfx::ToFlooredSize(
+      gfx::ScaleSize(size(), deviceScaleFactor()));
   context_->reshape(pixel_size.width(), pixel_size.height());
   context_->viewport(0, 0, pixel_size.width(), pixel_size.height());
 
   program_ = context_->createProgram();
 
   GLuint vertex_shader =
       CreateShaderFromSource(context_, GL_VERTEX_SHADER, kVertexShader);
   if (!vertex_shader)
     return false;
   context_->attachShader(program_, vertex_shader);
@@ skipping 59 matching lines @@
 RenderWidgetFullscreenPepper::GetParentContextForPlatformContext3D() {
   if (!context_) {
     CreateContext();
   }
   if (!context_)
     return NULL;
   return context_;
 }
 
 }  // namespace content