FBTF: Clean up task.h in x11_util.h and header usage in some delegates.

chrome/browser/blocked_popup_container.h

Index: chrome/browser/blocked_popup_container.h
diff --git a/chrome/browser/blocked_popup_container.h b/chrome/browser/blocked_popup_container.h
index dba215453e0778d0d34cf75b2e261a1333918892..04565de9886fb265d19325f30ac532a6e708d935 100644
--- a/chrome/browser/blocked_popup_container.h
+++ b/chrome/browser/blocked_popup_container.h
@@ -93,15 +93,7 @@ class BlockedPopupContainer : public TabContentsDelegate {
   static const size_t kImpossibleNumberOfPopups;
 
  protected:
-  struct BlockedPopup {
-    BlockedPopup(TabContents* tab_contents,
-                 const gfx::Rect& bounds)
-        : tab_contents(tab_contents), bounds(bounds) {
-    }
-
-    TabContents* tab_contents;
-    gfx::Rect bounds;
-  };
+  struct BlockedPopup;
   typedef std::vector<BlockedPopup> BlockedPopups;
 
  private: