Use a resource throttle to implement shouldOverrideUrlLoading.

android_webview/renderer/aw_content_renderer_client.h

 // Copyright 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 ANDROID_WEBVIEW_RENDERER_AW_CONTENT_RENDERER_CLIENT_H_
 #define ANDROID_WEBVIEW_RENDERER_AW_CONTENT_RENDERER_CLIENT_H_
 
 #include "content/public/renderer/content_renderer_client.h"
 
 #include "android_webview/renderer/aw_render_process_observer.h"
@@ skipping 19 matching lines @@
                                  blink::WebFrame* frame,
                                  const blink::WebURLRequest& failed_request,
                                  const blink::WebURLError& error,
                                  std::string* error_html,
                                  base::string16* error_description) override;
   unsigned long long VisitedLinkHash(const char* canonical_url,
                                      size_t length) override;
   bool IsLinkVisited(unsigned long long link_hash) override;
   void AddKeySystems(std::vector<media::KeySystemInfo>* key_systems) override;
 
-  bool HandleNavigation(content::RenderFrame* render_frame,
-                        content::DocumentState* document_state,
-                        int opener_id,
-                        blink::WebFrame* frame,
-                        const blink::WebURLRequest& request,
-                        blink::WebNavigationType type,
-                        blink::WebNavigationPolicy default_policy,
-                        bool is_redirect) override;
   bool ShouldOverridePageVisibilityState(
       const content::RenderFrame* render_frame,
       blink::WebPageVisibilityState* override_state) override;
 
  private:
   scoped_ptr<AwRenderProcessObserver> aw_render_process_observer_;
   scoped_ptr<visitedlink::VisitedLinkSlave> visited_link_slave_;
 };
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_RENDERER_AW_CONTENT_RENDERER_CLIENT_H_