clang/win: Let some chromium_code targets build with -Wextra.

content/child/npapi/webplugin_ime_win.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.
 
 #include "content/child/npapi/webplugin_ime_win.h"
 
 #include <cstring>
 #include <string>
 #include <vector>
 
@@ skipping 151 matching lines @@
     { "ImmAssociateContextEx",
         reinterpret_cast<FARPROC>(ImmAssociateContextEx) },
     { "ImmGetCompositionStringW",
         reinterpret_cast<FARPROC>(ImmGetCompositionStringW) },
     { "ImmGetContext", reinterpret_cast<FARPROC>(ImmGetContext) },
     { "ImmReleaseContext", reinterpret_cast<FARPROC>(ImmReleaseContext) },
     { "ImmSetCandidateWindow",
         reinterpret_cast<FARPROC>(ImmSetCandidateWindow) },
     { "ImmSetOpenStatus", reinterpret_cast<FARPROC>(ImmSetOpenStatus) },
   };
-  for (int i = 0; i < arraysize(kImm32Functions); ++i) {
+  for (size_t i = 0; i < arraysize(kImm32Functions); ++i) {
     if (!lstrcmpiA(name, kImm32Functions[i].name))
       return kImm32Functions[i].function;
   }
   return NULL;
 }
 
 void WebPluginIMEWin::Lock() {
   g_webplugin_ime_lock.Pointer()->Acquire();
   instance_ = this;
 }
@@ skipping 131 matching lines @@
   int input_type = open ? 1 : 0;
   if (instance->input_type_ != input_type) {
     instance->input_type_ = input_type;
     instance->status_updated_ = true;
   }
 
   return TRUE;
 }
 
 }  // namespace content