Break apart the TabModelBase's JNI calls into its own class

chrome/browser/ui/android/tab_model/tab_model_jni_bridge.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 CHROME_BROWSER_UI_ANDROID_TAB_MODEL_TAB_MODEL_BASE_H_
-#define CHROME_BROWSER_UI_ANDROID_TAB_MODEL_TAB_MODEL_BASE_H_
+#ifndef CHROME_BROWSER_UI_ANDROID_TAB_MODEL_TAB_MODEL_JNI_BRIDGE_H_
+#define CHROME_BROWSER_UI_ANDROID_TAB_MODEL_TAB_MODEL_JNI_BRIDGE_H_
 
 #include <jni.h>
 #include <vector>
 
 #include "base/android/jni_weak_ref.h"
 #include "base/android/scoped_java_ref.h"
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "chrome/browser/ui/android/tab_model/tab_model.h"
 
 class Profile;
 class TabAndroid;
 
 namespace content {
 class WebContents;
 }
 
-// Native representation of TabModelBase which provides access to information
-// about a tabstrip to native code and could potentially be used in place of
-// Browser for some functionality in Clank.
-class TabModelBase : public TabModel {
+// Bridges calls between the C++ and the Java TabModels. Functions in this
+// class should do little more than make calls out to the Java TabModel, which
+// is what actually stores Tabs.
+class TabModelJniBridge : public TabModel {
  public:
-  TabModelBase(JNIEnv* env, jobject obj, Profile* profile);
+  TabModelJniBridge(JNIEnv* env, jobject obj, bool is_incognito);
   void Destroy(JNIEnv* env, jobject obj);
+  virtual ~TabModelJniBridge();
+
+  // Registers the JNI bindings.
+  static bool Register(JNIEnv* env);
 
   // Called by JNI
   base::android::ScopedJavaLocalRef<jobject> GetProfileAndroid(JNIEnv* env,
                                                                jobject obj);
   void TabAddedToModel(JNIEnv* env, jobject obj, jobject jtab);
 
-  // TabModel:
+  // TabModel::
   virtual int GetTabCount() const override;
   virtual int GetActiveIndex() const override;
   virtual content::WebContents* GetWebContentsAt(int index) const override;
   virtual TabAndroid* GetTabAt(int index) const override;
 
   virtual void SetActiveIndex(int index) override;
   virtual void CloseTabAt(int index) override;
 
   virtual void CreateTab(content::WebContents* web_contents,
                          int parent_tab_id) override;
+
   virtual content::WebContents* CreateNewTabForDevTools(
       const GURL& url) override;
 
   // Return true if we are currently restoring sessions asynchronously.
   virtual bool IsSessionRestoreInProgress() const override;
 
   // Instructs the TabModel to broadcast a notification that all tabs are now
   // loaded from storage.
   void BroadcastSessionRestoreComplete(JNIEnv* env, jobject obj);
 
+ protected:
+  JavaObjectWeakGlobalRef java_object_;
+
  private:
-  virtual ~TabModelBase();
-
-  JavaObjectWeakGlobalRef java_object_;
+  DISALLOW_COPY_AND_ASSIGN(TabModelJniBridge);
 };
 
-// Register the Tab's native methods through jni.
-bool RegisterTabModelBase(JNIEnv* env);
-
-#endif  // CHROME_BROWSER_UI_ANDROID_TAB_MODEL_TAB_MODEL_BASE_H_
+#endif  // CHROME_BROWSER_UI_ANDROID_TAB_MODEL_TAB_MODEL_JNI_BRIDGE_H_