Move CSSCounterValue & CSSCursorImageValue to the namespace blink::cssvalue.

third_party/WebKit/Source/core/css/CSSCounterValue.h

Index: third_party/WebKit/Source/core/css/CSSCounterValue.h
diff --git a/third_party/WebKit/Source/core/css/CSSCounterValue.h b/third_party/WebKit/Source/core/css/CSSCounterValue.h
index 2d8b025523d819dbcac92d2ca22cef7a020023b8..ca2eb898042c2082173da26ec985da9461b386b1 100644
--- a/third_party/WebKit/Source/core/css/CSSCounterValue.h
+++ b/third_party/WebKit/Source/core/css/CSSCounterValue.h
@@ -28,6 +28,8 @@
 
 namespace blink {
 
+namespace cssvalue {
+
 class CSSCounterValue : public CSSValue {
  public:
   static CSSCounterValue* create(CSSCustomIdentValue* identifier,
@@ -65,6 +67,8 @@ class CSSCounterValue : public CSSValue {
 
 DEFINE_CSS_VALUE_TYPE_CASTS(CSSCounterValue, isCounterValue());
 
+}  // namespace cssvalue
+
 }  // namespace blink
 
 #endif  // CSSCounterValue_h