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

cc/render_pass.cc

Index: cc/render_pass.cc
diff --git a/cc/render_pass.cc b/cc/render_pass.cc
index 0a8dc488f66e8b23415af19929977d2eec7cd84c..d93389d20b756addb15c38b6cfd0420e21439e51 100644
--- a/cc/render_pass.cc
+++ b/cc/render_pass.cc
@@ -6,7 +6,7 @@
 
 #include "third_party/skia/include/core/SkImageFilter.h"
 
-using WebKit::WebTransformationMatrix;
+using gfx::Transform;
 
 namespace cc {
 
@@ -44,7 +44,7 @@ scoped_ptr<RenderPass> RenderPass::Copy(Id new_id) const {
 void RenderPass::SetNew(Id id,
                         gfx::Rect output_rect,
                         gfx::RectF damage_rect,
-                        const WebKit::WebTransformationMatrix& transform_to_root_target) {
+                        const gfx::Transform& transform_to_root_target) {
   DCHECK_GT(id.layer_id, 0);
   DCHECK_GE(id.index, 0);
 
@@ -60,7 +60,7 @@ void RenderPass::SetNew(Id id,
 void RenderPass::SetAll(Id id,
                         gfx::Rect output_rect,
                         gfx::RectF damage_rect,
-                        const WebKit::WebTransformationMatrix& transform_to_root_target,
+                        const gfx::Transform& transform_to_root_target,
                         bool has_transparent_background,
                         bool has_occlusion_from_outside_target_surface,
                         const WebKit::WebFilterOperations& filters,