Implement a ResourceThrottle for URL overriding in Chrome on Android.

content/browser/web_contents/web_contents_impl.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 "content/browser/web_contents/web_contents_impl.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
@@ skipping 2710 matching lines @@
     }
   }
 
   // In most cases, we receive this from a swapped out RenderViewHost.
   // It is possible to receive it from one that has just been swapped in,
   // in which case we might as well deliver the message anyway.
   GetRenderViewHost()->Send(new ViewMsg_PostMessageEvent(
       GetRenderViewHost()->GetRoutingID(), new_params));
 }
 
+bool WebContentsImpl::ShouldIgnoreNavigation(
+    const GURL& url,
+    const content::Referrer& referrer,
+    bool is_content_initiated) {
+  if (!delegate_)
+    return false;
+
+  GURL validated_url(url);
+  RenderViewHostImpl* render_view_host_impl = GetRenderViewHostImpl();
+  if (!render_view_host_impl)
+    return false;
+  render_view_host_impl->FilterURL(
+      ChildProcessSecurityPolicyImpl::GetInstance(),
+      render_view_host_impl->GetProcess()->GetID(),
+      false,
+      &validated_url);
+  return delegate_->ShouldIgnoreNavigation(
+      this, validated_url, referrer, is_content_initiated);
+}
+
 void WebContentsImpl::RunJavaScriptMessage(
     RenderViewHost* rvh,
     const string16& message,
     const string16& default_prompt,
     const GURL& frame_url,
     ui::JavascriptMessageType javascript_message_type,
     IPC::Message* reply_msg,
     bool* did_suppress_message) {
   // Suppress JavaScript dialogs when requested. Also suppress messages when
   // showing an interstitial as it's shown over the previous page and we don't
@@ skipping 323 matching lines @@
       browser_plugin_host()->embedder_render_process_host();
   *embedder_container_id = browser_plugin_host()->instance_id();
   int embedder_process_id =
       embedder_render_process_host ? embedder_render_process_host->GetID() : -1;
   if (embedder_process_id != -1) {
     *embedder_channel_name =
         StringPrintf("%d.r%d", render_view_host->GetProcess()->GetID(),
                      embedder_process_id);
   }
 }