Componentize IgnoreNavigationResourceThrottle and add chrome and webview specific implementations.

chrome/browser/android/tab_android.h

 // 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.
 
 #ifndef CHROME_BROWSER_ANDROID_TAB_ANDROID_H_
 #define CHROME_BROWSER_ANDROID_TAB_ANDROID_H_
 
 #include <jni.h>
 
 #include "base/android/jni_helper.h"
 #include "base/android/scoped_java_ref.h"
 #include "base/callback_forward.h"
 #include "base/string16.h"
 
 class GURL;
 class SkBitmap;
 
 namespace browser_sync {
 class SyncedTabDelegate;
 }
 
+namespace chrome {
+namespace android {
+class ChromeWebContentsDelegateAndroid;
+}
+}
+
 namespace content {
 struct ContextMenuParams;
 class WebContents;
 }
 
 class TabAndroid {
  public:
   TabAndroid();
 
   // Convenience method to retrieve the Tab associated with the passed
   // WebContents.  Can return NULL.
   static TabAndroid* FromWebContents(content::WebContents* web_contents);
 
   static TabAndroid* GetNativeTab(JNIEnv* env, jobject obj);
 
   virtual browser_sync::SyncedTabDelegate* GetSyncedTabDelegate() = 0;
+  virtual chrome::android::ChromeWebContentsDelegateAndroid*
+      GetChromeWebContentsDelegateAndroid() const = 0;
 
   int id() const {
     return tab_id_;
   }
 
   virtual void OnReceivedHttpAuthRequest(jobject auth_handler,
                                          const string16& host,
                                          const string16& realm) = 0;
 
   // Called to show the regular context menu that is triggered by a long press.
@@ skipping 16 matching lines @@
       const GURL& url, const string16& title, const SkBitmap& skbitmap,
       int r_value, int g_value, int b_value) = 0;
 
  protected:
   virtual ~TabAndroid();
 
   int tab_id_;
 };
 
 #endif  // CHROME_BROWSER_ANDROID_TAB_ANDROID_H_