cc: Remove forbidden using namespace directives.

cc/layer_animation_controller_unittest.cc

Index: cc/layer_animation_controller_unittest.cc
diff --git a/cc/layer_animation_controller_unittest.cc b/cc/layer_animation_controller_unittest.cc
index 6834dfc5cac6398d634abc14ca1f27de6a30976c..48347aa3d3efe8cb4fb8ee18bb3099ccaf6728a6 100644
--- a/cc/layer_animation_controller_unittest.cc
+++ b/cc/layer_animation_controller_unittest.cc
@@ -13,10 +13,10 @@
 #include "testing/gtest/include/gtest/gtest.h"
 #include <public/WebTransformationMatrix.h>
 
-using namespace cc;
 using namespace WebKitTests;
 using WebKit::WebTransformationMatrix;
 
+namespace cc {
 namespace {
 
 void expectTranslateX(double translateX, const WebTransformationMatrix& matrix)
@@ -558,4 +558,5 @@ TEST(LayerAnimationControllerTest, ForceSyncWhenSynchronizedStartTimeNeeded)
     EXPECT_EQ(ActiveAnimation::WaitingForTargetAvailability, activeAnimation->runState());
 }
 
-}  // anonymous namespace
+}  // namespace
+}  // namespace cc