Deprecate v8::External::New without Isolate parameter

R=bmeurer@chromium.org, machenbach@chromium.org, svenpanne@chromium.org
LOG=y
BUG=none

Review URL: https://codereview.chromium.org/63093004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17869 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

include/v8.h

@@ -3074,8 +3074,7 @@ class V8_EXPORT RegExp : public Object {
 class V8_EXPORT External : public Value {
  public:
   static Local<External> New(Isolate* isolate, void* value);
-  // Deprecated, do not use.
-  static Local<External> New(void* value);
+  V8_DEPRECATED("Will be removed", static Local<External> New(void *value));
   V8_INLINE static External* Cast(Value* obj);
   void* Value() const;
  private: