Finish migrating cc/ from WebKit::WebTransformationMatrix to gfx::Transform

cc/test/geometry_test_utils.h

Index: cc/test/geometry_test_utils.h
diff --git a/cc/test/geometry_test_utils.h b/cc/test/geometry_test_utils.h
index 0bcb99e4dcdc79a7f23188a201a7afe7dc39bded..b27e9983eca52b6d0235265e65633d3e322f37c3 100644
--- a/cc/test/geometry_test_utils.h
+++ b/cc/test/geometry_test_utils.h
@@ -9,10 +9,6 @@ namespace gfx {
 class Transform;
 }
 
-namespace WebKit {
-class WebTransformationMatrix;
-}
-
 namespace cc {
 
 // These are macros instead of functions so that we get useful line numbers where a test failed.
@@ -64,9 +60,6 @@ do { \
 void ExpectTransformationMatrixEq(const gfx::Transform& expected,
                                   const gfx::Transform& actual);
 
-void ExpectTransformationMatrixEq(const WebKit::WebTransformationMatrix& expected,
-                                  const WebKit::WebTransformationMatrix& actual);
-
 #define EXPECT_TRANSFORMATION_MATRIX_EQ(expected, actual)            \
     {                                                                \
         SCOPED_TRACE("");                                            \