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 2400 matching lines @@
 void WebContentsImpl::RouteCloseEvent(RenderViewHost* rvh) {
   // Tell the active RenderViewHost to run unload handlers and close, as long
   // as the request came from a RenderViewHost in the same BrowsingInstance.
   // 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.
   if (rvh->GetSiteInstance()->IsRelatedSiteInstance(GetSiteInstance()))
     GetRenderViewHost()->ClosePage();
 }
 
+bool WebContentsImpl::ShouldIgnoreNavigation(
+    RenderViewHost* render_view_host,
+    const GURL& url,
+    const content::Referrer& referrer,
+    bool is_content_initiated) {
+  if (!delegate_)
+    return false;
+
+  GURL validated_url(url);
+  RenderViewHostImpl* render_view_host_impl =
+      static_cast<RenderViewHostImpl*>(render_view_host);
+  content::RenderProcessHost* render_process_host =
+      render_view_host->GetProcess();
+  render_view_host_impl->FilterURL(
+      ChildProcessSecurityPolicyImpl::GetInstance(),
+      render_process_host->GetID(),
+      false,
+      &validated_url);
+  return delegate_->ShouldIgnoreNavigation(
+      this, validated_url, referrer, is_content_initiated);

[joth, 2012/05/11 15:34:13]

feels like it should be possible to write a test case for this... guess the main
snag is it would be ifdef ANDROID only (unless we make a way to include this
path on all platforms)

[mkosiba (inactive), 2012/05/15 14:20:23]

Should be possible to inject the throttle into requests in a unit test...

+}
+
 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 298 matching lines @@
 void WebContentsImpl::CreateViewAndSetSizeForRVH(RenderViewHost* rvh) {
   RenderWidgetHostView* rwh_view = GetView()->CreateViewForWidget(rvh);
   // Can be NULL during tests.
   if (rwh_view)
     rwh_view->SetSize(GetView()->GetContainerSize());
 }
 
 RenderViewHostImpl* WebContentsImpl::GetRenderViewHostImpl() {
   return static_cast<RenderViewHostImpl*>(GetRenderViewHost());
 }