Display extension name on device chooser title

chrome/browser/chooser_controller/chooser_controller.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_CHOOSER_CONTROLLER_CHOOSER_CONTROLLER_H_
 #define CHROME_BROWSER_CHOOSER_CONTROLLER_CHOOSER_CONTROLLER_H_
 
 #include "base/macros.h"
 #include "base/strings/string16.h"
 
@@ skipping 34 matching lines @@
     // Called when GetOption(index) is no longer present, and all later
     // options have been moved earlier by 1 slot. Calling GetOption(index)
     // from inside a call to OnOptionRemoved will NOT see the removed string
     // since the options have already been updated.
     virtual void OnOptionRemoved(size_t index) = 0;
 
    protected:
     virtual ~Observer() {}
   };
 
-  // Return the origin URL to be displayed on the chooser title.
-  url::Origin GetOrigin() const;
+  // Returns the text to be displayed in the chooser title.
+  base::string16 GetTitle();
 
   // The number of options users can pick from. For example, it can be
   // the number of USB/Bluetooth device names which are listed in the
   // chooser so that users can grant permission.
   virtual size_t NumOptions() const = 0;
 
   // The |index|th option string which is listed in the chooser.
   virtual base::string16 GetOption(size_t index) const = 0;
 
   // These three functions are called just before this object is destroyed:
 
   // Called when the user selects the |index|th element from the dialog.
   virtual void Select(size_t index) = 0;
 
   // Called when the user presses the 'Cancel' button in the dialog.
   virtual void Cancel() = 0;
 
   // Called when the user clicks outside the dialog or the dialog otherwise
   // closes without the user taking an explicit action.
   virtual void Close() = 0;
 
   // Open help center URL.
   virtual void OpenHelpCenterUrl() const = 0;
 
   // Only one observer may be registered at a time.
   void set_observer(Observer* observer) { observer_ = observer; }
   Observer* observer() const { return observer_; }
 
+ protected:
+  // Return the title prefix to be displayed on the chooser.
+  base::string16 GetTitlePrefix();
+
  private:
   content::RenderFrameHost* owning_frame_;
+  bool title_prefix_has_quote_ = true;
   Observer* observer_ = nullptr;
 
   DISALLOW_COPY_AND_ASSIGN(ChooserController);
 };
 
 #endif  // CHROME_BROWSER_CHOOSER_CONTROLLER_CHOOSER_CONTROLLER_H_