Pass result of blockage across content API when new tab blocked.

chrome/browser/ui/cocoa/web_dialog_window_controller.mm

Index: chrome/browser/ui/cocoa/web_dialog_window_controller.mm
===================================================================
--- chrome/browser/ui/cocoa/web_dialog_window_controller.mm	(revision 154977)
+++ chrome/browser/ui/cocoa/web_dialog_window_controller.mm	(working copy)
@@ -78,7 +78,8 @@
                               content::WebContents* new_contents,
                               WindowOpenDisposition disposition,
                               const gfx::Rect& initial_pos,
-                              bool user_gesture) OVERRIDE;
+                              bool user_gesture,
+                              bool* was_blocked) OVERRIDE;
   virtual void LoadingStateChanged(content::WebContents* source) OVERRIDE;
 
 private:
@@ -234,13 +235,15 @@
     content::WebContents* new_contents,
     WindowOpenDisposition disposition,
     const gfx::Rect& initial_pos,
-    bool user_gesture) {
+    bool user_gesture,
+    bool* was_blocked) {
   if (delegate_ && delegate_->HandleAddNewContents(
           source, new_contents, disposition, initial_pos, user_gesture)) {
     return;
   }
   WebDialogWebContentsDelegate::AddNewContents(
-      source, new_contents, disposition, initial_pos, user_gesture);
+      source, new_contents, disposition, initial_pos, user_gesture,
+      was_blocked);
 }
 
 void WebDialogWindowDelegateBridge::LoadingStateChanged(