Implement a ResourceThrottle for URL overriding in Chrome on Android.

chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.cc

Index: chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.cc
diff --git a/chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.cc b/chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.cc
index a5153ddf598fbd906c59ed39cff38f70485bf06b..01440cebbe83762524160087ecf9146337b18a2a 100644
--- a/chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.cc
+++ b/chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.cc
@@ -22,6 +22,7 @@
 #include "chrome/browser/prerender/prerender_tracker.h"
 #include "chrome/browser/profiles/profile_io_data.h"
 #include "chrome/browser/renderer_host/chrome_url_request_user_data.h"
+#include "chrome/browser/renderer_host/intercept_navigation_resource_throttle.h"
 #include "chrome/browser/renderer_host/safe_browsing_resource_throttle.h"
 #include "chrome/browser/safe_browsing/safe_browsing_service.h"
 #include "chrome/browser/ui/auto_login_prompter.h"
@@ -132,14 +133,16 @@ void ChromeResourceDispatcherHostDelegate::RequestBeginning(
     request->set_priority(net::IDLE);
   }
 
-#if defined(OS_CHROMEOS)
   if (resource_type == ResourceType::MAIN_FRAME) {
+#if defined(OS_CHROMEOS)
     // We check offline first, then check safe browsing so that we still can
     // block unsafe site after we remove offline page.
     throttles->push_back(new OfflineResourceThrottle(
         child_id, route_id, request, resource_context));
-  }
+#elif defined(OS_ANDROID)
+    throttles->push_back(new InterceptNavigationResourceThrottle(request));
 #endif
+  }
 
   AppendChromeMetricsHeaders(request, resource_context, resource_type);