Make a ShowExtensionActionPopup function

chrome/browser/extensions/api/extension_action/extension_action_api.h

Index: chrome/browser/extensions/api/extension_action/extension_action_api.h
diff --git a/chrome/browser/extensions/api/extension_action/extension_action_api.h b/chrome/browser/extensions/api/extension_action/extension_action_api.h
index 11cec0e03fe77be67798ec2053e00fcd012f023f..1888b13711a8f6cb569eaefe19b0a86d86c33756 100644
--- a/chrome/browser/extensions/api/extension_action/extension_action_api.h
+++ b/chrome/browser/extensions/api/extension_action/extension_action_api.h
@@ -87,6 +87,13 @@ class ExtensionActionAPI : public BrowserContextKeyedAPI {
       Browser* browser,
       bool grant_active_tab_permissions);
 
+  // Opens the popup for the given |extension| in the given |browser|'s window.
+  // See ExecuteExtensionAction for the definition of
+  // |grant_active_tab_permissions|.

[Finnur, 2014/08/27 11:53:02]

Hmm... I wonder if we should just duplicate the comment for it here, since
|grant_active_tab_permissions| is important to get right (to avoid security
flaws).

[Devlin, 2014/08/27 15:43:22]

Done.

+  bool ShowExtensionActionPopup(const Extension* extension,
+                                Browser* browser,
+                                bool grant_active_tab_permissions);
+
   // Notifies that there has been a change in the given |extension_action|.
   void NotifyChange(ExtensionAction* extension_action,
                     content::WebContents* web_contents,