Replace Handle<> with Local in remaining gin/*

gin/dictionary.h

Index: gin/dictionary.h
diff --git a/gin/dictionary.h b/gin/dictionary.h
index 972108fbb438f72608f4f9a52d4fd7e6d6e2f218..efebfa85a702666d6efe8fe4285caafc858e49f1 100644
--- a/gin/dictionary.h
+++ b/gin/dictionary.h
@@ -25,14 +25,14 @@ namespace gin {
 class GIN_EXPORT Dictionary {
  public:
   explicit Dictionary(v8::Isolate* isolate);
-  Dictionary(v8::Isolate* isolate, v8::Handle<v8::Object> object);
+  Dictionary(v8::Isolate* isolate, v8::Local<v8::Object> object);
   ~Dictionary();
 
   static Dictionary CreateEmpty(v8::Isolate* isolate);
 
   template<typename T>
   bool Get(const std::string& key, T* out) {
-    v8::Handle<v8::Value> val = object_->Get(StringToV8(isolate_, key));
+    v8::Local<v8::Value> val = object_->Get(StringToV8(isolate_, key));
     return ConvertFromV8(isolate_, val, out);
   }
 
@@ -48,15 +48,15 @@ class GIN_EXPORT Dictionary {
 
   // TODO(aa): Remove this. Instead, get via FromV8(), Set(), and Get().
   v8::Isolate* isolate_;
-  v8::Handle<v8::Object> object_;
+  v8::Local<v8::Object> object_;
 };
 
 template<>
 struct GIN_EXPORT Converter<Dictionary> {
-  static v8::Handle<v8::Value> ToV8(v8::Isolate* isolate,
+  static v8::Local<v8::Value> ToV8(v8::Isolate* isolate,
                                     Dictionary val);
   static bool FromV8(v8::Isolate* isolate,
-                     v8::Handle<v8::Value> val,
+                     v8::Local<v8::Value> val,
                      Dictionary* out);
 };