Only use pending navigation params for browser-initiated navigations.

third_party/WebKit/public/web/WebFrameClient.h

Index: third_party/WebKit/public/web/WebFrameClient.h
diff --git a/third_party/WebKit/public/web/WebFrameClient.h b/third_party/WebKit/public/web/WebFrameClient.h
index 86d80b8040486dbf5de25d4fe56a063e3c0aabfc..4e5406378f9563edc8490b26604361769451c599 100644
--- a/third_party/WebKit/public/web/WebFrameClient.h
+++ b/third_party/WebKit/public/web/WebFrameClient.h
@@ -346,7 +346,7 @@ public:
     // The navigation resulted in no change to the documents within the page.
     // For example, the navigation may have just resulted in scrolling to a
     // named anchor or a PopState event may have been dispatched.
-    virtual void didNavigateWithinPage(WebLocalFrame*, const WebHistoryItem&, WebHistoryCommitType) { }
+    virtual void didNavigateWithinPage(WebLocalFrame*, const WebHistoryItem&, WebHistoryCommitType, bool contentInitiated) { }
 
     // Called upon update to scroll position, document state, and other
     // non-navigational events related to the data held by WebHistoryItem.