Migrate most of cc/ from WebKit::WebTransformationMatrix to gfx::Transform

cc/software_renderer_unittest.cc

Index: cc/software_renderer_unittest.cc
diff --git a/cc/software_renderer_unittest.cc b/cc/software_renderer_unittest.cc
index 121ba769b9e15d8271e3e1bd896f55619c730c82..4b80d2842f6c49cff22cad96da07c9325893e24b 100644
--- a/cc/software_renderer_unittest.cc
+++ b/cc/software_renderer_unittest.cc
@@ -67,10 +67,10 @@ TEST_F(SoftwareRendererTest, solidColorQuad)
     initializeRenderer();
 
     scoped_ptr<SharedQuadState> sharedQuadState = SharedQuadState::Create();
-    sharedQuadState->SetAll(WebTransformationMatrix(), outerRect, outerRect, outerRect, false, 1.0);
+    sharedQuadState->SetAll(gfx::Transform(), outerRect, outerRect, outerRect, false, 1.0);
     RenderPass::Id rootRenderPassId = RenderPass::Id(1, 1);
     scoped_ptr<TestRenderPass> rootRenderPass = TestRenderPass::Create();
-    rootRenderPass->SetNew(rootRenderPassId, outerRect, gfx::Rect(), WebTransformationMatrix());
+    rootRenderPass->SetNew(rootRenderPassId, outerRect, gfx::Rect(), gfx::Transform());
     scoped_ptr<SolidColorDrawQuad> outerQuad = SolidColorDrawQuad::Create();
     outerQuad->SetNew(sharedQuadState.get(), outerRect, SK_ColorYELLOW);
     scoped_ptr<SolidColorDrawQuad> innerQuad = SolidColorDrawQuad::Create();
@@ -128,10 +128,10 @@ TEST_F(SoftwareRendererTest, tileQuad)
     gfx::Rect rect = gfx::Rect(gfx::Point(), deviceViewportSize());
 
     scoped_ptr<SharedQuadState> sharedQuadState = SharedQuadState::Create();
-    sharedQuadState->SetAll(WebTransformationMatrix(), outerRect, outerRect, outerRect, false, 1.0);
+    sharedQuadState->SetAll(gfx::Transform(), outerRect, outerRect, outerRect, false, 1.0);
     RenderPass::Id rootRenderPassId = RenderPass::Id(1, 1);
     scoped_ptr<TestRenderPass> rootRenderPass = TestRenderPass::Create();
-    rootRenderPass->SetNew(rootRenderPassId, gfx::Rect(gfx::Point(), deviceViewportSize()), gfx::Rect(), WebTransformationMatrix());
+    rootRenderPass->SetNew(rootRenderPassId, gfx::Rect(gfx::Point(), deviceViewportSize()), gfx::Rect(), gfx::Transform());
     scoped_ptr<TileDrawQuad> outerQuad = TileDrawQuad::Create();
     outerQuad->SetNew(sharedQuadState.get(), outerRect, outerRect, resourceYellow, gfx::RectF(gfx::PointF(), outerSize), outerSize, false, false, false, false, false);
     scoped_ptr<TileDrawQuad> innerQuad = TileDrawQuad::Create();