[Mojo] Fix the namespace for HandleWrapper

mojo/bindings/js/handle.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MOJO_BINDINGS_JS_HANDLE_H_
 #define MOJO_BINDINGS_JS_HANDLE_H_
 
 #include "base/observer_list.h"
 #include "gin/converter.h"
 #include "gin/handle.h"
 #include "gin/wrappable.h"
 #include "mojo/public/cpp/system/core.h"
 
-namespace gin {
+namespace mojo {
+namespace js {
 class HandleCloseObserver;
 
 // Wrapper for mojo Handles exposed to JavaScript. This ensures the Handle
 // is Closed when its JS object is garbage collected.
 class HandleWrapper : public gin::Wrappable<HandleWrapper> {
  public:
   static gin::WrapperInfo kWrapperInfo;
 
   static gin::Handle<HandleWrapper> Create(v8::Isolate* isolate,
                                            MojoHandle handle) {
     return gin::CreateHandle(isolate, new HandleWrapper(handle));
   }
 
   mojo::Handle get() const { return handle_.get(); }
   mojo::Handle release() { return handle_.release(); }
   void Close();
 
   void AddCloseObserver(HandleCloseObserver* observer);
   void RemoveCloseObserver(HandleCloseObserver* observer);
 
  protected:
   HandleWrapper(MojoHandle handle);
   virtual ~HandleWrapper();
   void NotifyCloseObservers();
 
   mojo::ScopedHandle handle_;
   ObserverList<HandleCloseObserver> close_observers_;
 };
 
+}  // namespace js
+}  // namespace mojo
+
+namespace gin {
+
 // Note: It's important to use this converter rather than the one for
 // MojoHandle, since that will do a simple int32 conversion. It's unfortunate
 // there's no way to prevent against accidental use.
 // TODO(mpcomplete): define converters for all Handle subtypes.
 template<>
 struct Converter<mojo::Handle> {
   static v8::Handle<v8::Value> ToV8(v8::Isolate* isolate,
                                     const mojo::Handle& val);
   static bool FromV8(v8::Isolate* isolate, v8::Handle<v8::Value> val,
                      mojo::Handle* out);
 };
 
 // We need to specialize the normal gin::Handle converter in order to handle
 // converting |null| to a wrapper for an empty mojo::Handle.
 template<>
-struct Converter<gin::Handle<gin::HandleWrapper> > {
+struct Converter<gin::Handle<mojo::js::HandleWrapper> > {
   static v8::Handle<v8::Value> ToV8(
-        v8::Isolate* isolate, const gin::Handle<gin::HandleWrapper>& val) {
+        v8::Isolate* isolate, const gin::Handle<mojo::js::HandleWrapper>& val) {
     return val.ToV8();
   }
 
   static bool FromV8(v8::Isolate* isolate, v8::Handle<v8::Value> val,
-                     gin::Handle<gin::HandleWrapper>* out) {
+                     gin::Handle<mojo::js::HandleWrapper>* out) {
     if (val->IsNull()) {
-      *out = HandleWrapper::Create(isolate, MOJO_HANDLE_INVALID);
+      *out = mojo::js::HandleWrapper::Create(isolate, MOJO_HANDLE_INVALID);
       return true;
     }
 
-    gin::HandleWrapper* object = NULL;
-    if (!Converter<gin::HandleWrapper*>::FromV8(isolate, val, &object)) {
+    mojo::js::HandleWrapper* object = NULL;
+    if (!Converter<mojo::js::HandleWrapper*>::FromV8(isolate, val, &object)) {
       return false;
     }
-    *out = gin::Handle<gin::HandleWrapper>(val, object);
+    *out = gin::Handle<mojo::js::HandleWrapper>(val, object);
     return true;
   }
 };
 
 }  // namespace gin
 
 #endif  // MOJO_BINDINGS_JS_HANDLE_H_