cc: Unify namespaces for all test files

cc/test/animation_test_common.cc

Index: cc/test/animation_test_common.cc
diff --git a/cc/test/animation_test_common.cc b/cc/test/animation_test_common.cc
index b6ba614d199ffdc4df1c9f805aa8c70c52a717c1..62b0de8b4eec7f481e7458b7a87a4ecf3b970064 100644
--- a/cc/test/animation_test_common.cc
+++ b/cc/test/animation_test_common.cc
@@ -19,7 +19,7 @@ using cc::KeyframedTransformAnimationCurve;
 using cc::TimingFunction;
 using cc::TransformKeyframe;
 
-namespace {
+namespace cc {
 
 static int nextAnimationId = 0;
 
@@ -68,10 +68,6 @@ int addAnimatedTransform(Target& target, double duration, int deltaX, int deltaY
     return id;
 }
 
-} // namespace
-
-namespace cc {
-
 FakeFloatAnimationCurve::FakeFloatAnimationCurve()
     : m_duration(1)
 {