1 files changed, 76 insertions, 0 deletions
diff --git a/chromium/tools/win/chromeexts/chrome_exts_command.h b/chromium/tools/win/chromeexts/chrome_exts_command.h
new file mode 100644
index 00000000000..49450ef62ba
--- /dev/null
+++ b/chromium/tools/win/chromeexts/chrome_exts_command.h
@@ -0,0 +1,76 @@
+// 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 TOOLS_WIN_CHROMEEXTS_CHROME_EXTS_COMMAND_H_
+#define TOOLS_WIN_CHROMEEXTS_CHROME_EXTS_COMMAND_H_
+
+#include <dbgeng.h>
+#include <stdarg.h>
+#include <wrl/client.h>
+
+#include <memory>
+#include <string>
+
+#include "base/macros.h"
+#include "base/memory/ptr_util.h"
+
+namespace tools {
+namespace win {
+namespace chromeexts {
+
+namespace {
+using Microsoft::WRL::ComPtr;
+}  // namespace
+
+// Superclass of all commands in the debugger extension.
+// To implement your own command, just follow these steps:
+// 1) Create a new class and subclass ChromeExtsCommand.
+// 2) Implement Execute().
+// 3) Add a function that calls Run<Your Subclass>() to chromeexts.cc.
+// 4) Add your new function to the exports list in chromeexts.def.
+// Done!
+class ChromeExtsCommand {
+ public:
+  template <typename T>
+  static HRESULT Run(IDebugClient* debug_client, const char* args) {
+    std::unique_ptr<ChromeExtsCommand> command = base::MakeUnique<T>();
+    HRESULT hr = command->Initialize(debug_client, args);
+    if (SUCCEEDED(hr)) {
+      hr = command->Execute();
+    }
+    return hr;
+  }
+
+  virtual ~ChromeExtsCommand();
+
+ protected:
+  ChromeExtsCommand();
+
+  virtual HRESULT Initialize(IDebugClient* debug_client, const char* args);
+
+  virtual HRESULT Execute() = 0;
+
+  HRESULT Printf(const char* format, ...);
+  HRESULT PrintV(const char* format, va_list ap);
+
+  HRESULT PrintErrorf(const char* format, ...);
+  HRESULT PrintErrorV(const char* format, va_list ap);
+
+  const std::string& args() const { return args_; }
+  IDebugClient* debug_client() { return debug_client_.Get(); }
+  IDebugControl* debug_control() { return debug_control_.Get(); }
+
+ private:
+  std::string args_;
+  ComPtr<IDebugClient> debug_client_;
+  ComPtr<IDebugControl> debug_control_;
+
+  DISALLOW_COPY_AND_ASSIGN(ChromeExtsCommand);
+};
+
+}  // namespace chromeexts
+}  // namespace win
+}  // namespace tools
+
+#endif  // TOOLS_WIN_CHROMEEXTS_CHROME_EXTS_COMMAND_H_