Report text output and exit code for command-line operations.

chrome/browser/operation_output_win.h

Index: chrome/browser/operation_output_win.h
diff --git a/chrome/browser/operation_output_win.h b/chrome/browser/operation_output_win.h
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+// Copyright (c) 2013 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.
+//
+// See apps/app_host/operation_launcher.h for information on how operation
+// output channels are established on Windows.
+
+#ifndef CHROME_BROWSER_OPERATION_OUTPUT_WIN_H_
+#define CHROME_BROWSER_OPERATION_OUTPUT_WIN_H_
+
+#include "chrome/browser/operation_output.h"
+
+#include <windows.h>
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "base/win/scoped_handle.h"
+
+// Implements an OperationOutput channel on Windows, using one writable HANDLE
+// each for the output and the exit code.
+class OperationOutputWin : public OperationOutput {
+ public:
+  // Instantiates an OperationOutputWin. |output_pipe| and |exit_code_pipe| must
+  // be valid in the current process.
+  OperationOutputWin(base::win::ScopedHandle output_pipe,
+                     base::win::ScopedHandle exit_code_pipe);
+
+  // OperationOutput implementation.
+  virtual bool Write(const char* data, unsigned int length) OVERRIDE;
+
+ private:
+  // OperationOutput implementation.
+  virtual bool SetExitCode(unsigned int exit_code) OVERRIDE;
+
+  base::win::ScopedHandle output_pipe_;
+  base::win::ScopedHandle exit_code_pipe_;
+
+  DISALLOW_COPY_AND_ASSIGN(OperationOutputWin);
+};
+
+#endif  // CHROME_BROWSER_OPERATION_OUTPUT_WIN_H_