Let blink scheduler know when background parsing a document

third_party/WebKit/public/platform/WebViewScheduler.h

Index: third_party/WebKit/public/platform/WebViewScheduler.h
diff --git a/third_party/WebKit/public/platform/WebViewScheduler.h b/third_party/WebKit/public/platform/WebViewScheduler.h
index 37eb20dfc945b1dc57b5dfa7a8d4db98410db2fd..29c6c538dbbf357dec0df1e0044467062cbaf772 100644
--- a/third_party/WebKit/public/platform/WebViewScheduler.h
+++ b/third_party/WebKit/public/platform/WebViewScheduler.h
@@ -53,8 +53,9 @@ public:
         PAUSE,
 
         // In this policy virtual time is allowed to advance unless there are pending network
-        // fetches associated any child WebFrameScheduler.
-        PAUSE_IF_NETWORK_FETCHES_PENDING
+        // fetches associated any child WebFrameScheduler, or a document is being parsed on a
+        // background thread.  The aim being to try and make loading (more) deterministic.
+        DETERMINISTIC_LOADING
     };
 
     // Sets the virtual time policy, which is applied imemdiatly to all child WebFrameSchedulers.