chrome.bluetooth API improvements.

extensions/browser/api/api_resource_manager.h

Index: extensions/browser/api/api_resource_manager.h
diff --git a/extensions/browser/api/api_resource_manager.h b/extensions/browser/api/api_resource_manager.h
index c4f6c6abea7576f4fcec9759c3c9917d096cc44d..4114529906b078f8d47a4d8c167787f108c4ea04 100644
--- a/extensions/browser/api/api_resource_manager.h
+++ b/extensions/browser/api/api_resource_manager.h
@@ -25,6 +25,8 @@
 namespace extensions {
 
 namespace api {
+class BluetoothSocketApiFunction;
+class BluetoothSocketEventDispatcher;
 class SerialEventDispatcher;
 }
 
@@ -152,6 +154,9 @@ class ApiResourceManager : public BrowserContextKeyedAPI,
  private:
   // TODO(rockot): ApiResourceData could be moved out of ApiResourceManager and
   // we could avoid maintaining a friends list here.
+  friend class BluetoothAPI;
+  friend class api::BluetoothSocketApiFunction;
+  friend class api::BluetoothSocketEventDispatcher;
   friend class api::SerialEventDispatcher;
   friend class core_api::TCPServerSocketEventDispatcher;
   friend class core_api::TCPSocketEventDispatcher;