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

content/renderer/render_view_impl.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_view_impl.h"
 
 #include <algorithm>
 #include <cmath>
 
 #include "base/bind.h"
@@ skipping 6319 matching lines @@
   gfx::Rect finger_rect(
       event.x - event.data.tap.width / 2, event.y - event.data.tap.height / 2,
       event.data.tap.width, event.data.tap.height);
   gfx::Rect zoom_rect;
   float scale = DisambiguationPopupHelper::ComputeZoomAreaAndScaleFactor(
       finger_rect, target_rects, GetSize(), &zoom_rect);
   if (!scale)
     return false;
 
   gfx::Size canvas_size = zoom_rect.size();
-  canvas_size = ToCeiledSize(canvas_size.Scale(scale));
+  canvas_size = ToCeiledSize(gfx::ScaleSize(canvas_size, scale));
   TransportDIB* transport_dib = NULL;
   {
     scoped_ptr<skia::PlatformCanvas> canvas(
         RenderProcess::current()->GetDrawingCanvas(&transport_dib,
                                                    gfx::Rect(canvas_size)));
     if (!canvas.get())
       return false;
 
     canvas->scale(scale, scale);
 
@@ skipping 10 matching lines @@
 }
 #endif
 
 void RenderViewImpl::OnReleaseDisambiguationPopupDIB(
     TransportDIB::Handle dib_handle) {
   TransportDIB* dib = TransportDIB::CreateWithHandle(dib_handle);
   RenderProcess::current()->ReleaseTransportDIB(dib);
 }
 
 }  // namespace content