Display extension name on device chooser title

chrome/browser/chooser_controller/chooser_controller.h

Index: chrome/browser/chooser_controller/chooser_controller.h
diff --git a/chrome/browser/chooser_controller/chooser_controller.h b/chrome/browser/chooser_controller/chooser_controller.h
index 275f02431810e363f886b54a0fced92cc7ae5263..5d4d52c029f54b066f1ff6fcbaf31d12fed8a5b4 100644
--- a/chrome/browser/chooser_controller/chooser_controller.h
+++ b/chrome/browser/chooser_controller/chooser_controller.h
@@ -52,8 +52,8 @@ class ChooserController {
     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() const;
 
   // 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
@@ -82,6 +82,10 @@ class ChooserController {
   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() const;
+
  private:
   content::RenderFrameHost* owning_frame_;
   Observer* observer_ = nullptr;