Mark BooleanObject::New() as deprecated

Embedders should use the factory method that takes an Isolate* instead

BUG=none
R=vogelheim@chromium.org
LOG=y

Review URL: https://codereview.chromium.org/1494503003

Cr-Commit-Position: refs/heads/master@{#32573}

include/v8.h

@@ -3934,7 +3934,7 @@ class V8_EXPORT NumberObject : public Object {
 class V8_EXPORT BooleanObject : public Object {
  public:
   static Local<Value> New(Isolate* isolate, bool value);
-  V8_DEPRECATE_SOON("Pass an isolate", static Local<Value> New(bool value));
+  V8_DEPRECATED("Pass an isolate", static Local<Value> New(bool value));
 
   bool ValueOf() const;