Warm up EnumSystemLocalesEx() for Flash Player.

Land the patch on behalf of Ye Liu <cbakgly@gmail.com>

The original CL is:
https://codereview.chromium.org/137893002/
(All the three reviewers on the TBR line have LG-ed that CL.)

TBR=piman@chromium.org,jschuh@chromium.org,yzshen@chromium.org
BUG=None

Review URL: https://codereview.chromium.org/161263002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@250852 0039d316-1c4b-4281-b951-d872f2087c98

AUTHORS

@@ -334,6 +334,7 @@ Yael Aharon <yael.aharon@intel.com>
 Yair Yogev <progame@chromium.org>
 Yang Gu <yang.gu@intel.com>
 Yarin Kaul <yarin.kaul@gmail.com>
+Ye Liu <cbakgly@gmail.com>
 Yi Shen <yi.shen@samsung.com>
 Yoav Weiss <yoav@yoav.ws>
 Yoav Zilberberg <yoav.zilberberg@gmail.com>

content/ppapi_plugin/ppapi_thread.cc

@@ -52,6 +52,11 @@
 
 #if defined(OS_WIN)
 extern sandbox::TargetServices* g_target_services;
+
+// Used by EnumSystemLocales for warming up.
+static BOOL CALLBACK EnumLocalesProc(LPTSTR lpLocaleString) {
+  return TRUE;
+}
 #else
 extern void* g_target_services;
 #endif
@@ -297,6 +302,11 @@ void PpapiThread::OnLoadPlugin(const base::FilePath& path,
     ::GetUserDefaultLangID();
     ::GetUserDefaultLCID();
 
+    if (permissions.HasPermission(ppapi::PERMISSION_FLASH)) {
+      // Warm up system locales.
+      EnumSystemLocalesW(EnumLocalesProc, LCID_INSTALLED);
+    }
+
     g_target_services->LowerToken();
   }
 #endif