Revert of Upgrade the windows specific version of LaunchProcess to avoid raw handles.

chrome/browser/extensions/api/messaging/native_message_process_host_unittest.cc

 // Copyright (c) 2012 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 "base/bind.h"
 #include "base/files/file.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_file.h"
 #include "base/files/scoped_temp_dir.h"
@@ skipping 64 matching lines @@
 
     return scoped_ptr<NativeProcessLauncher>(new FakeLauncher(
         read_pipe.Pass(),
         base::File(write_file, write_flags)));
   }
 
   void Launch(const GURL& origin,
               const std::string& native_host_name,
               LaunchedCallback callback) const override {
     callback.Run(NativeProcessLauncher::RESULT_SUCCESS,
-                 base::Process(), read_file_.Pass(), write_file_.Pass());
+                 base::kNullProcessHandle,
+                 read_file_.Pass(), write_file_.Pass());
   }
 
  private:
   mutable base::File read_file_;
   mutable base::File write_file_;
 };
 
 class NativeMessagingTest : public ::testing::Test,
                             public NativeMessageHost::Client,
                             public base::SupportsWeakPtr<NativeMessagingTest> {
@@ skipping 229 matching lines @@
   native_message_host_->Start(this);
   ASSERT_TRUE(native_message_host_.get());
   run_loop_.reset(new base::RunLoop());
   run_loop_->Run();
 
   // The host should fail to start.
   ASSERT_TRUE(channel_closed_);
 }
 
 }  // namespace extensions