Implement a ResourceThrottle for URL overriding in Chrome on Android.

content/browser/renderer_host/throttling_resource_handler.cc

Index: content/browser/renderer_host/throttling_resource_handler.cc
diff --git a/content/browser/renderer_host/throttling_resource_handler.cc b/content/browser/renderer_host/throttling_resource_handler.cc
index a07d278c0c5d0ba270d7775ad76c05f226c68ed1..82f2002024f70833de01ca2b588dda2a9bbaf5e2 100644
--- a/content/browser/renderer_host/throttling_resource_handler.cc
+++ b/content/browser/renderer_host/throttling_resource_handler.cc
@@ -102,6 +102,10 @@ void ThrottlingResourceHandler::Cancel() {
   host_->CancelRequest(child_id_, request_id_, false);
 }
 
+void ThrottlingResourceHandler::CancelWithHandledExternallyStatus() {
+  host_->CancelRequestWithHandledExternallyStatus(child_id_, request_id_);
+}
+
 void ThrottlingResourceHandler::Resume() {
   switch (deferred_stage_) {
     case DEFERRED_NONE: