Remove the HANDLED_EXTERNALLY status code.

content/common/resource_dispatcher.cc

Index: content/common/resource_dispatcher.cc
diff --git a/content/common/resource_dispatcher.cc b/content/common/resource_dispatcher.cc
index 7a6ac06d8e0a4a8ec02c3c32f4db5cc1daa2950f..d33a516c69f0d8b580257194bd9403c76415cc89 100644
--- a/content/common/resource_dispatcher.cc
+++ b/content/common/resource_dispatcher.cc
@@ -245,6 +245,7 @@ void IPCResourceLoaderBridge::SyncLoad(SyncLoadResponse* response) {
   }
 
   response->status = result.status;
+  response->handled_externally = result.handled_externally;
   response->url = result.final_url;
   response->headers = result.headers;
   response->mime_type = result.mime_type;
@@ -452,6 +453,7 @@ void ResourceDispatcher::FollowPendingRedirect(
 void ResourceDispatcher::OnRequestComplete(
     int request_id,
     const net::URLRequestStatus& status,
+    bool handled_externally,
     const std::string& security_info,
     const base::TimeTicks& browser_completion_time) {
   PendingRequestInfo* request_info = GetPendingRequestInfo(request_id);
@@ -474,7 +476,9 @@ void ResourceDispatcher::OnRequestComplete(
   // The request ID will be removed from our pending list in the destructor.
   // Normally, dispatching this message causes the reference-counted request to
   // die immediately.
-  peer->OnCompletedRequest(status, security_info, renderer_completion_time);
+  peer->OnCompletedRequest(
+      status, handled_externally, security_info,
+      renderer_completion_time);
 }
 
 int ResourceDispatcher::AddPendingRequest(