Reland 1: Enable overriding interface binders for any services running in current process.

services/service_manager/public/cpp/interface_binder.h

 // Copyright 2017 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 SERVICES_SERVICE_MANAGER_PUBLIC_CPP_INTERFACE_BINDER_H_
 #define SERVICES_SERVICE_MANAGER_PUBLIC_CPP_INTERFACE_BINDER_H_
 
 #include <string>
 #include <utility>
 
@@ skipping 49 matching lines @@
     callback.Run(source_info, std::move(request));
   }
 
   const BindCallback callback_;
   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
   DISALLOW_COPY_AND_ASSIGN(CallbackBinder);
 };
 
 class GenericCallbackBinder : public InterfaceBinder {
  public:
-  using BindCallback = base::Callback<void(mojo::ScopedMessagePipeHandle)>;
+  using BindCallback = base::Callback<void(const BindSourceInfo&,
+                                           const std::string&,
+                                           mojo::ScopedMessagePipeHandle)>;
 
   GenericCallbackBinder(
       const BindCallback& callback,
       const scoped_refptr<base::SingleThreadTaskRunner>& task_runner);
+  GenericCallbackBinder(
+      const base::Callback<void(mojo::ScopedMessagePipeHandle)>& callback,
+      const scoped_refptr<base::SingleThreadTaskRunner>& task_runner);
   ~GenericCallbackBinder() override;
 
  private:
   // InterfaceBinder:
   void BindInterface(const BindSourceInfo& source_info,
                      const std::string& interface_name,
                      mojo::ScopedMessagePipeHandle handle) override;
 
   static void RunCallback(const BindCallback& callback,
+                          const BindSourceInfo& source_info,
+                          const std::string& interface_name,
                           mojo::ScopedMessagePipeHandle client_handle);
 
   const BindCallback callback_;
   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
   DISALLOW_COPY_AND_ASSIGN(GenericCallbackBinder);
 };
 
 }  // namespace service_manager
 
 #endif  // SERVICES_SERVICE_MANAGER_PUBLIC_CPP_INTERFACE_BINDER_H_