cc: Fix style for comments at the end of namespaces

cc/gl_renderer_unittest.cc

Index: cc/gl_renderer_unittest.cc
diff --git a/cc/gl_renderer_unittest.cc b/cc/gl_renderer_unittest.cc
index 8e808058fec2eed77e5ee7fef68eec09560c5211..bb0e9c6fa639fdfca4abe190da4f0366a9cfc6c7 100644
--- a/cc/gl_renderer_unittest.cc
+++ b/cc/gl_renderer_unittest.cc
@@ -22,6 +22,8 @@ using namespace cc;
 using namespace WebKit;
 using namespace WebKitTests;
 
+namespace {
+
 class FrameCountingMemoryAllocationSettingContext : public FakeWebGraphicsContext3D {
 public:
     FrameCountingMemoryAllocationSettingContext() : m_frame(0) { }
@@ -483,3 +485,5 @@ TEST(GLRendererTest2, visibilityChangeIsLastCall)
     renderer.setVisible(false);
     EXPECT_TRUE(lastCallWasSetVisiblity);
 }
+
+}  // anonymous namespace