Remove some uses of ATL in UI code

tools/memory_watcher/dllmain.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.
 
 // The memory_watcher.dll is hooked by simply linking it.  When we get the
 // windows notification that this DLL is loaded, we do a few things:
 //    1) Register a Hot Key.
 //       Only one process can hook the Hot Key, so one will get it, and the
 //       others will silently fail.
 //    2) Create a thread to wait on an event.
@@ skipping 17 matching lines @@
 static HANDLE g_dump_event = INVALID_HANDLE_VALUE;
 static HANDLE g_quit_event = INVALID_HANDLE_VALUE;
 static HANDLE g_watcher_thread = INVALID_HANDLE_VALUE;
 
 // A HotKey to dump the memory statistics.
 class MemoryWatcherDumpKey : public HotKeyHandler {
  public:
   MemoryWatcherDumpKey(UINT modifiers, UINT vkey)
     : HotKeyHandler(modifiers, vkey) {}
 
-  virtual LRESULT OnHotKey(UINT, WPARAM, LPARAM, BOOL& bHandled) {
+  virtual void OnHotKey(UINT, WPARAM, LPARAM) {
     SetEvent(g_dump_event);
-    return 1;
   }
 };
 
 // Creates the global memory watcher.
 void CreateMemoryWatcher() {
   g_memory_watcher_exit_manager = new base::AtExitManager();
   g_memory_watcher = new MemoryWatcher();
   // Register ALT-CONTROL-D to Dump Memory stats.
   g_hotkey_handler = new MemoryWatcherDumpKey(MOD_ALT|MOD_CONTROL, 0x44);
 }
@@ skipping 95 matching lines @@
       break;
   }
   return TRUE;
 }
 
 __declspec(dllexport) void __cdecl SetLogName(char* name) {
   g_memory_watcher->SetLogName(name);
 }
 
 }  // extern "C"