cc: Remove forbidden using namespace directives.

cc/scoped_resource_unittest.cc

Index: cc/scoped_resource_unittest.cc
diff --git a/cc/scoped_resource_unittest.cc b/cc/scoped_resource_unittest.cc
index 612e5a79fcceb89326c26895e0a707049bac6125..9b8158c9d9c800bc81e5965ea5eaac17c938a664 100644
--- a/cc/scoped_resource_unittest.cc
+++ b/cc/scoped_resource_unittest.cc
@@ -12,10 +12,9 @@
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/khronos/GLES2/gl2.h"
 
-using namespace cc;
 using namespace WebKit;
-using namespace WebKitTests;
 
+namespace cc {
 namespace {
 
 TEST(ScopedResourceTest, NewScopedResource)
@@ -100,4 +99,5 @@ TEST(ScopedResourceTest, LeakScopedResource)
     EXPECT_EQ(1u, resourceProvider->numResources());
 }
 
-}  // anonymous namespace
+}  // namespace
+}  // namespace cc