Move RequestPpapiBrokerPermission from WebContentsObserver to WebContentsDelegate.

chrome/browser/ui/browser.h

Index: chrome/browser/ui/browser.h
diff --git a/chrome/browser/ui/browser.h b/chrome/browser/ui/browser.h
index b24f460c34c61711dccc19b2efdf35625fe9267e..79e05ed96837b748d30225430b4bf0053d141765 100644
--- a/chrome/browser/ui/browser.h
+++ b/chrome/browser/ui/browser.h
@@ -650,6 +650,11 @@ class Browser : public TabStripModelObserver,
       content::WebContents* web_contents,
       const content::MediaStreamRequest* request,
       const content::MediaResponseCallback& callback) OVERRIDE;
+  virtual void RequestPpapiBrokerPermission(
+      content::WebContents* web_contents,
+      const GURL& url,
+      const FilePath& plugin_path,
+      const base::Callback<void(bool)>& callback) OVERRIDE;
 
   // Overridden from CoreTabHelperDelegate:
   // Note that the caller is responsible for deleting |old_tab_contents|.