Use string for Histogram names since these are all ASCII anyway wide-characte...

chrome/views/focus_manager.cc

 // Copyright (c) 2006-2008 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 <algorithm>
 
 #include "base/histogram.h"
 #include "base/logging.h"
 #include "base/win_util.h"
 #include "chrome/browser/renderer_host/render_widget_host_view_win.h"
@@ skipping 212 matching lines @@
 void FocusManager::InstallFocusSubclass(HWND window, View* view) {
   DCHECK(window);
 
   bool already_subclassed =
       reinterpret_cast<bool>(GetProp(window,
                                      kFocusSubclassInstalled));
   if (already_subclassed &&
       !win_util::IsSubclassed(window, &FocusWindowCallback)) {
     NOTREACHED() << "window sub-classed by someone other than the FocusManager";
     // Track in UMA so we know if this case happens.
-    UMA_HISTOGRAM_COUNTS(L"FocusManager.MultipleSubclass", 1);
+    UMA_HISTOGRAM_COUNTS("FocusManager.MultipleSubclass", 1);
   } else {
     win_util::Subclass(window, &FocusWindowCallback);
     SetProp(window, kFocusSubclassInstalled, reinterpret_cast<HANDLE>(true));
   }
   if (view)
     SetProp(window, kViewKey, view);
 }
 
 void FocusManager::UninstallFocusSubclass(HWND window) {
   DCHECK(window);
@@ skipping 591 matching lines @@
       std::find(focus_change_listeners_.begin(), focus_change_listeners_.end(),
                 listener);
   if (place == focus_change_listeners_.end()) {
     NOTREACHED() << "Removing a listener that isn't registered.";
     return;
   }
   focus_change_listeners_.erase(place);
 }
 
 }  // namespace views
-