Implement function that hides the WebUI Hung Renderer Dialog.

chrome/browser/ui/webui/hung_renderer_dialog.h

Index: chrome/browser/ui/webui/hung_renderer_dialog.h
diff --git a/chrome/browser/ui/webui/hung_renderer_dialog.h b/chrome/browser/ui/webui/hung_renderer_dialog.h
index 29145a52657c4a1212cdfb1841ba06a712bbdb55..ca38279683150273f6b6ba646e69860e70e2de98 100644
--- a/chrome/browser/ui/webui/hung_renderer_dialog.h
+++ b/chrome/browser/ui/webui/hung_renderer_dialog.h
@@ -23,6 +23,9 @@ class HungRendererDialog : private HtmlDialogUIDelegate {
   // Shows the hung renderer dialog.
   void ShowDialog(gfx::NativeWindow owning_window, TabContents* contents);
 
+  // Hides the hung renderer dialog.
+  void HideDialog(TabContents* contents);
+
  private:
   // HtmlDialogUIDelegate methods
   virtual bool IsDialogModal() const OVERRIDE;
@@ -40,6 +43,9 @@ class HungRendererDialog : private HtmlDialogUIDelegate {
   // The tab contents.
   TabContents* contents_;
 
+  // The dialog window.
+  gfx::NativeWindow window_;
+
   DISALLOW_COPY_AND_ASSIGN(HungRendererDialog);
 };
 
@@ -63,3 +69,4 @@ class HungRendererDialogHandler : public WebUIMessageHandler {
 
 
 #endif  // CHROME_BROWSER_UI_WEBUI_HUNG_RENDERER_DIALOG_H_
+