Show device connection and paired status in chooser on Mac

content/browser/bluetooth/web_bluetooth_service_impl.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 CONTENT_BROWSER_BLUETOOTH_WEB_BLUETOOTH_SERVICE_IMPL_H_
 #define CONTENT_BROWSER_BLUETOOTH_WEB_BLUETOOTH_SERVICE_IMPL_H_
 
 #include <memory>
 #include <string>
 #include <vector>
@@ skipping 43 matching lines @@
   // |request|: The instance will be bound to this request's pipe.
   WebBluetoothServiceImpl(RenderFrameHost* render_frame_host,
                           blink::mojom::WebBluetoothServiceRequest request);
   ~WebBluetoothServiceImpl() override;
 
   void CrashRendererAndClosePipe(bad_message::BadMessageReason reason);
 
   // Sets the connection error handler for WebBluetoothServiceImpl's Binding.
   void SetClientConnectionErrorHandler(base::Closure closure);
 
+  bool IsDevicePaired(const std::string& device_address);

[Jeffrey Yasskin, 2016/09/14 23:52:03]

Comment that this returns whether the device is paired with the
RenderFrameHost's LastCommittedOrigin().

[juncai, 2016/09/15 01:00:02]

Done.

+
  private:
   friend class FrameConnectedBluetoothDevicesTest;
   typedef base::Callback<void(device::BluetoothDevice*)>
       PrimaryServicesRequestCallback;
 
   // WebContentsObserver:
   // These functions should always check that the affected RenderFrameHost
   // is this->render_frame_host_ and not some other frame in the same tab.
   void DidFinishNavigation(NavigationHandle* navigation_handle) override;
 
@@ skipping 175 matching lines @@
   mojo::Binding<blink::mojom::WebBluetoothService> binding_;
 
   base::WeakPtrFactory<WebBluetoothServiceImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WebBluetoothServiceImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_BLUETOOTH_WEB_BLUETOOTH_SERVICE_IMPL_H_