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

cc/draw_quad.h

Index: cc/draw_quad.h
diff --git a/cc/draw_quad.h b/cc/draw_quad.h
index 7dee19c4dc3d76abaaa0681813b408c12e2f1791..6ebc83863f4354fbafe83eee960bac86b988632e 100644
--- a/cc/draw_quad.h
+++ b/cc/draw_quad.h
@@ -35,7 +35,7 @@ class CC_EXPORT DrawQuad {
       const SharedQuadState* copied_shared_quad_state) const;
 
   // TODO(danakj): Chromify or remove these SharedQuadState helpers.
-  const WebKit::WebTransformationMatrix& quadTransform() const { return shared_quad_state->content_to_target_transform; }
+  const gfx::Transform& quadTransform() const { return shared_quad_state->content_to_target_transform; }
   gfx::Rect visibleContentRect() const { return shared_quad_state->visible_content_rect; }
   gfx::Rect clippedRectInTarget() const { return shared_quad_state->clipped_rect_in_target; }
   float opacity() const { return shared_quad_state->opacity; }