Bug 1348050 - Part 5: Mark channel as urgent-start for embed element. r=baku

This patch is mainly for ObjectLoadingContent. Since there is no any runnable
between setting src and creating channel, I check urgent-start just after
creating channel.

MozReview-Commit-ID: IoishRqENBM

--HG--
extra : rebase_source : 25799e27c6a2eb50d5ee3aded0d66fe6bb05c52b

dom/base/nsObjectLoadingContent.cpp

@@ -11,6 +11,7 @@
 
 // Interface headers
 #include "imgLoader.h"
+#include "nsIClassOfService.h"
 #include "nsIConsoleService.h"
 #include "nsIContent.h"
 #include "nsIContentInlines.h"
@@ -84,6 +85,7 @@
 #include "mozilla/dom/PluginCrashedEvent.h"
 #include "mozilla/AsyncEventDispatcher.h"
 #include "mozilla/EventDispatcher.h"
+#include "mozilla/EventStateManager.h"
 #include "mozilla/EventStates.h"
 #include "mozilla/IntegerPrintfMacros.h"
 #include "mozilla/dom/HTMLObjectElementBinding.h"
@@ -2548,6 +2550,11 @@ nsObjectLoadingContent::OpenChannel()
     if (timedChannel) {
       timedChannel->SetInitiatorType(thisContent->LocalName());
     }
+
+    nsCOMPtr<nsIClassOfService> cos(do_QueryInterface(httpChan));
+    if (cos && EventStateManager::IsHandlingUserInput()) {
+      cos->AddClassFlags(nsIClassOfService::UrgentStart);
+    }
   }
 
   nsCOMPtr<nsIScriptChannel> scriptChannel = do_QueryInterface(chan);