cc: Use SkMScalar instead of doubles everywhere in cc

cc/animation/layer_animation_controller_unittest.cc

Index: cc/animation/layer_animation_controller_unittest.cc
diff --git a/cc/animation/layer_animation_controller_unittest.cc b/cc/animation/layer_animation_controller_unittest.cc
index 6e94734fc3e0cca812b96afc294091ea96834dff..e55c53c07f3adaaf51755339ad3d54eb8a39d125 100644
--- a/cc/animation/layer_animation_controller_unittest.cc
+++ b/cc/animation/layer_animation_controller_unittest.cc
@@ -18,9 +18,6 @@
 namespace cc {
 namespace {
 
-void ExpectTranslateX(double translate_x, const gfx::Transform& matrix) {
-  EXPECT_FLOAT_EQ(translate_x, matrix.matrix().getDouble(0, 3)); }
-
 scoped_ptr<Animation> CreateAnimation(scoped_ptr<AnimationCurve> curve,
                                       int id,
                                       Animation::TargetProperty property) {