Remove memory_watcher tool as well as --memory-profile command line flag.

tools/memory_watcher/hotkey.h

-// Copyright (c) 2009 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_MEMORY_WATCHER_HOTKEY_H_
-#define TOOLS_MEMORY_WATCHER_HOTKEY_H_
-
-#include "ui/gfx/rect.h"
-#include "ui/gfx/win/msg_util.h"
-#include "ui/gfx/win/window_impl.h"
-
-// HotKey handler.
-// Programs wishing to register a hotkey can use this.
-class HotKeyHandler : public gfx::WindowImpl {
- public:
-  HotKeyHandler(UINT modifiers, UINT vk)
-    : modifiers_(modifiers),
-      vkey_(vk) {
-    Start();
-  }
-  ~HotKeyHandler() { Stop(); }
-
-  CR_BEGIN_MSG_MAP_EX(HotKeyHandler)
-    CR_MSG_WM_HOTKEY(OnHotKey)
-  CR_END_MSG_MAP()
-
- private:
-  static const int hotkey_id = 0x0000baba;
-
-  bool Start() {
-    set_window_style(WS_POPUP);
-    Init(NULL, gfx::Rect());
-    return RegisterHotKey(hwnd(), hotkey_id, modifiers_, vkey_) == TRUE;
-  }
-
-  void Stop() {
-    UnregisterHotKey(hwnd(), hotkey_id);
-    DestroyWindow(hwnd());
-  }
-
-  // Handle the registered Hotkey being pressed.
-  virtual void OnHotKey(UINT /*uMsg*/,
-                        WPARAM /*wParam*/,
-                        LPARAM /*lParam*/) = 0;
-
-  UINT modifiers_;
-  UINT vkey_;
-};
-
-#endif  // TOOLS_MEMORY_WATCHER_HOTKEY_H_