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

cc/layer_tree_host_unittest.cc

 // Copyright 2011 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 "config.h"
 
 #include "cc/layer_tree_host.h"
 
 #include "base/synchronization/lock.h"
 #include "cc/content_layer.h"
@@ skipping 1328 matching lines @@
 
         // Both layers should be drawing into the root render surface.
         ASSERT_EQ(1u, renderSurfaceLayerList.size());
         ASSERT_EQ(root->renderSurface(), renderSurfaceLayerList[0]->renderSurface());
         ASSERT_EQ(2u, root->renderSurface()->layerList().size());
 
         // The root render surface is the size of the viewport.
         EXPECT_RECT_EQ(gfx::Rect(0, 0, 60, 60), root->renderSurface()->contentRect());
 
         // The content bounds of the child should be scaled.
-        gfx::Size childBoundsScaled = child->bounds();
-        childBoundsScaled = gfx::ToRoundedSize(childBoundsScaled.Scale(1.5));
+        gfx::Size childBoundsScaled = gfx::ToCeiledSize(gfx::ScaleSize(child->bounds(), 1.5));
         EXPECT_EQ(childBoundsScaled, child->contentBounds());
 
         WebTransformationMatrix scaleTransform;
         scaleTransform.scale(impl->deviceScaleFactor());
 
         // The root layer is scaled by 2x.
         WebTransformationMatrix rootScreenSpaceTransform = scaleTransform;
         WebTransformationMatrix rootDrawTransform = scaleTransform;
 
         EXPECT_EQ(rootDrawTransform, root->drawTransform());
@@ skipping 826 matching lines @@
         , m_initialScroll(10, 20)
         , m_secondScroll(40, 5)
         , m_scrollAmount(2, -1)
         , m_rootScrolls(0)
     {
     }
 
     virtual void beginTest() OVERRIDE
     {
         gfx::Size viewportSize(10, 10);
-        gfx::Size deviceViewportSize = gfx::ToCeiledSize(viewportSize.Scale(m_deviceScaleFactor));
+        gfx::Size deviceViewportSize = gfx::ToCeiledSize(gfx::ScaleSize(viewportSize, m_deviceScaleFactor));
         m_layerTreeHost->setViewportSize(viewportSize, deviceViewportSize);
 
         m_layerTreeHost->setDeviceScaleFactor(m_deviceScaleFactor);
 
         m_rootScrollLayer = ContentLayer::create(&m_mockDelegate);
         m_rootScrollLayer->setBounds(gfx::Size(110, 110));
 
         m_rootScrollLayer->setPosition(gfx::PointF(0, 0));
         m_rootScrollLayer->setAnchorPoint(gfx::PointF(0, 0));
 
@@ skipping 139 matching lines @@
         , m_initialScroll(10, 20)
         , m_secondScroll(40, 5)
         , m_scrollAmount(2, -1)
         , m_rootScrolls(0)
     {
     }
 
     virtual void beginTest() OVERRIDE
     {
         gfx::Size viewportSize(10, 10);
-        gfx::Size deviceViewportSize = gfx::ToCeiledSize(viewportSize.Scale(m_deviceScaleFactor));
+        gfx::Size deviceViewportSize = gfx::ToCeiledSize(gfx::ScaleSize(viewportSize, m_deviceScaleFactor));
         m_layerTreeHost->setViewportSize(viewportSize, deviceViewportSize);
 
         m_layerTreeHost->setDeviceScaleFactor(m_deviceScaleFactor);
 
         m_rootScrollLayer = ContentLayer::create(&m_mockDelegate);
         m_rootScrollLayer->setBounds(gfx::Size(110, 110));
 
         m_rootScrollLayer->setPosition(gfx::PointF(0, 0));
         m_rootScrollLayer->setAnchorPoint(gfx::PointF(0, 0));
 
@@ skipping 857 matching lines @@
     int m_numCommitsDeferred;
     int m_numCompleteCommits;
 };
 
 TEST_F(LayerTreeHostTestDeferCommits, runMultiThread)
 {
     runTest(true);
 }
 
 }  // anonymous namespace