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

net/proxy/proxy_resolver_winhttp.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 "net/proxy/proxy_resolver_winhttp.h"
 
 #include <windows.h>
 #include <winhttp.h>
 
 #include "base/histogram.h"
 #include "net/base/net_errors.h"
 
 #pragma comment(lib, "winhttp.lib")
 
 using base::TimeDelta;
 using base::TimeTicks;
 
 namespace net {
 
 // A small wrapper for histogramming purposes ;-)
 static BOOL CallWinHttpGetProxyForUrl(HINTERNET session, LPCWSTR url,
                                       WINHTTP_AUTOPROXY_OPTIONS* options,
                                       WINHTTP_PROXY_INFO* results) {
   TimeTicks time_start = TimeTicks::Now();
   BOOL rv = WinHttpGetProxyForUrl(session, url, options, results);
   TimeDelta time_delta = TimeTicks::Now() - time_start;
   // Record separately success and failure times since they will have very
   // different characteristics.
   if (rv) {
-    UMA_HISTOGRAM_LONG_TIMES(L"Net.GetProxyForUrl_OK", time_delta);
+    UMA_HISTOGRAM_LONG_TIMES("Net.GetProxyForUrl_OK", time_delta);
   } else {
-    UMA_HISTOGRAM_LONG_TIMES(L"Net.GetProxyForUrl_FAIL", time_delta);
+    UMA_HISTOGRAM_LONG_TIMES("Net.GetProxyForUrl_FAIL", time_delta);
   }
   return rv;
 }
 
 static void FreeInfo(WINHTTP_PROXY_INFO* info) {
   if (info->lpszProxy)
     GlobalFree(info->lpszProxy);
   if (info->lpszProxyBypass)
     GlobalFree(info->lpszProxyBypass);
 }
@@ skipping 109 matching lines @@
 }
 
 void ProxyResolverWinHttp::CloseWinHttpSession() {
   if (session_handle_) {
     WinHttpCloseHandle(session_handle_);
     session_handle_ = NULL;
   }
 }
 
 }  // namespace net
-