Revert of bluetooth: Move testing IPC from BluetoothDispatcher to BlinkTestRunner

content/browser/bluetooth/bluetooth_dispatcher_host.h

Index: content/browser/bluetooth/bluetooth_dispatcher_host.h
diff --git a/content/browser/bluetooth/bluetooth_dispatcher_host.h b/content/browser/bluetooth/bluetooth_dispatcher_host.h
index 86aca14341d1273fa2e4d0367c29a8753850306d..1cc27c594d54ad99757e47edf0da1aec828c0965 100644
--- a/content/browser/bluetooth/bluetooth_dispatcher_host.h
+++ b/content/browser/bluetooth/bluetooth_dispatcher_host.h
@@ -23,7 +23,7 @@
 // UI Thread Note:
 // BluetoothDispatcherHost is constructed, operates, and destroyed on the UI
 // thread because BluetoothAdapter and related objects live there.
-class CONTENT_EXPORT BluetoothDispatcherHost final
+class BluetoothDispatcherHost final
     : public BrowserMessageFilter,
       public device::BluetoothAdapter::Observer {
  public:
@@ -33,8 +33,6 @@
   void OverrideThreadForMessage(const IPC::Message& message,
                                 BrowserThread::ID* thread) override;
   bool OnMessageReceived(const IPC::Message& message) override;
-
-  void SetBluetoothAdapterForTesting(const std::string& name);
 
  protected:
   ~BluetoothDispatcherHost() override;
@@ -51,6 +49,7 @@
   void OnRequestDevice(int thread_id, int request_id);
   void OnConnectGATT(int thread_id, int request_id,
                      const std::string& device_instance_id);
+  void OnSetBluetoothMockDataSetForTesting(const std::string& name);
 
   // Callbacks for BluetoothAdapter::StartDiscoverySession.
   void OnDiscoverySessionStarted(