[Mojo] Fix the namespace for HandleWrapper

mojo/bindings/js/handle.h

Index: mojo/bindings/js/handle.h
diff --git a/mojo/bindings/js/handle.h b/mojo/bindings/js/handle.h
index e0f00dd52a9762791c6fc7bd5edacaed3f8e3a10..4f0d9b5d120d886c2c7ee09887c3f502fa14b1b2 100644
--- a/mojo/bindings/js/handle.h
+++ b/mojo/bindings/js/handle.h
@@ -11,7 +11,8 @@
 #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
@@ -41,6 +42,11 @@ class HandleWrapper : public gin::Wrappable<HandleWrapper> {
   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.
@@ -56,24 +62,24 @@ struct Converter<mojo::Handle> {
 // 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;
   }
 };