DevTools: request app banner from DevTools without #enable-add-to-shelf flag while emulating.

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 9f8db8be07ab3b77383054642431a53e8bf3a1fd..5a75ec5a4814df84c8f67cacd106e6fcb7c16fb0 100644
--- a/chrome/browser/ui/browser.h
+++ b/chrome/browser/ui/browser.h
@@ -480,7 +480,10 @@ class Browser : public TabStripModelObserver,
   scoped_ptr<content::BluetoothChooser> RunBluetoothChooser(
       content::RenderFrameHost* frame,
       const content::BluetoothChooser::EventHandler& event_handler) override;
-  bool RequestAppBanner(content::WebContents* web_contents) override;
+  void RequestAppBannerFromDevTools(
+      content::WebContents* web_contents) override;
+
+  bool RequestAppBanner(content::WebContents* web_contents);
 
   bool is_type_tabbed() const { return type_ == TYPE_TABBED; }
   bool is_type_popup() const { return type_ == TYPE_POPUP; }