Mojo: more idiomatic C++ bindings

mojo/shell/app_child_process.cc

 // Copyright 2014 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.
 
 #include "mojo/shell/app_child_process.h"
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
@@ skipping 175 matching lines @@
     BindToPipe(impl.get(), host_message_pipe.Pass());
 
     app_context->set_controller(impl.Pass());
   }
 
   virtual void OnConnectionError() OVERRIDE {
     // TODO(darin): How should we handle a connection error here?
   }
 
   // |AppChildController| methods:
-  virtual void StartApp(const String& app_path,
+  virtual void StartApp(String app_path,
                         ScopedMessagePipeHandle service) OVERRIDE {
-    DVLOG(2) << "AppChildControllerImpl::StartApp("
-             << app_path.To<std::string>() << ", ...)";
+    DVLOG(2) << "AppChildControllerImpl::StartApp(" << app_path << ", ...)";
     DCHECK(thread_checker_.CalledOnValidThread());
 
-    // TODO(darin): Add TypeConverter for FilePath <-> mojo::String.
     unblocker_.Unblock(base::Bind(&AppChildControllerImpl::StartAppOnMainThread,
-                                  base::FilePath::FromUTF8Unsafe(
-                                      app_path.To<std::string>()),
+                                  base::FilePath::FromUTF8Unsafe(app_path),
                                   base::Passed(&service)));
   }
 
  private:
   AppChildControllerImpl(AppContext* app_context,
                          const Blocker::Unblocker& unblocker)
       : app_context_(app_context),
         unblocker_(unblocker),
         channel_info_(NULL) {
   }
@@ skipping 71 matching lines @@
       base::Bind(&AppChildControllerImpl::Init, base::Unretained(&app_context),
                  base::Passed(platform_channel()), blocker.GetUnblocker()));
   // This will block, then run whatever the controller wants.
   blocker.Block();
 
   app_context.Shutdown();
 }
 
 }  // namespace shell
 }  // namespace mojo