Add ContentViewDelegate

base/android/jni_helper.cc

 // Copyright (c) 2012 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.
 
 #include "base/android/jni_helper.h"
 
 #include "base/android/jni_android.h"
 #include "base/logging.h"
 
 using base::android::AttachCurrentThread;
 
+JavaObjectWeakGlobalRef::JavaObjectWeakGlobalRef()
+  : obj_(NULL) {
+}
+
+JavaObjectWeakGlobalRef::JavaObjectWeakGlobalRef(
+    const JavaObjectWeakGlobalRef& orig) {
+  Assign(orig);
+}
+
 JavaObjectWeakGlobalRef::JavaObjectWeakGlobalRef(JNIEnv* env, jobject obj)
     : obj_(env->NewWeakGlobalRef(obj)) {
   DCHECK(obj_);
 }
 
 JavaObjectWeakGlobalRef::~JavaObjectWeakGlobalRef() {
   reset();
 }
 
+void JavaObjectWeakGlobalRef::operator=(const JavaObjectWeakGlobalRef& rhs) {
+  Assign(rhs);
+}
+
 void JavaObjectWeakGlobalRef::reset() {
   if (obj_) {
     AttachCurrentThread()->DeleteWeakGlobalRef(obj_);
     obj_ = NULL;
   }
 }
 
 base::android::ScopedJavaLocalRef<jobject>
     JavaObjectWeakGlobalRef::get(JNIEnv* env) const {
   return GetRealObject(env, obj_);
 }
 
 base::android::ScopedJavaLocalRef<jobject> GetRealObject(
     JNIEnv* env, jweak obj) {
   jobject real = NULL;
   if (obj) {
     real = env->NewLocalRef(obj);
     if (!real)
       DLOG(ERROR) << "The real object has been deleted!";
   }
   return base::android::ScopedJavaLocalRef<jobject>(env, real);
 }
+
+void JavaObjectWeakGlobalRef::Assign(const JavaObjectWeakGlobalRef& other) {
+  JNIEnv* env = AttachCurrentThread();
+  obj_ = env->NewWeakGlobalRef(other.obj_);
+}