[Sync] Add support for identifying tabbed activites

chrome/browser/ui/android/tab_model/tab_model_jni_bridge.cc

 // 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.
 
 #include "chrome/browser/ui/android/tab_model/tab_model_jni_bridge.h"
 
 #include <stdint.h>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
@@ skipping 88 matching lines @@
 }
 
 TabAndroid* TabModelJniBridge::GetTabAt(int index) const {
   JNIEnv* env = AttachCurrentThread();
   ScopedJavaLocalRef<jobject> jtab =
       Java_TabModelJniBridge_getTabAt(env, java_object_.get(env), index);
 
   return jtab.is_null() ? NULL : TabAndroid::GetNativeTab(env, jtab);
 }
 
+bool TabModelJniBridge::IsTabbedActivity() const {
+  JNIEnv* env = AttachCurrentThread();
+  return Java_TabModelJniBridge_isTabbedActivity(env, java_object_.get(env));
+}
+
 void TabModelJniBridge::SetActiveIndex(int index) {
   JNIEnv* env = AttachCurrentThread();
   Java_TabModelJniBridge_setIndex(env, java_object_.get(env), index);
 }
 
 void TabModelJniBridge::CloseTabAt(int index) {
   JNIEnv* env = AttachCurrentThread();
   Java_TabModelJniBridge_closeTabAt(env, java_object_.get(env), index);
 }
 
@@ skipping 93 matching lines @@
 bool TabModelJniBridge::Register(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 static jlong Init(JNIEnv* env,
                   const JavaParamRef<jobject>& obj,
                   jboolean is_incognito) {
   TabModel* tab_model = new TabModelJniBridge(env, obj, is_incognito);
   return reinterpret_cast<intptr_t>(tab_model);
 }