Set the default locale for ICU in the PPAPI process.

content/ppapi_plugin/ppapi_plugin_main.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 "base/command_line.h"
 #include "base/debug/debugger.h"
+#include "base/i18n/rtl.h"
 #include "base/message_loop.h"
 #include "base/threading/platform_thread.h"
 #include "build/build_config.h"
 #include "content/common/child_process.h"
 #include "content/ppapi_plugin/ppapi_thread.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/main_function_params.h"
+#include "ui/base/ui_base_switches.h"

[raymes, 2012/08/03 22:05:17]

Wrong order.

 #include "ppapi/proxy/proxy_module.h"
 
 #if defined(OS_WIN)
 #include "sandbox/win/src/sandbox.h"
 #endif
 
 #if defined(OS_LINUX)
 #include "content/public/common/sandbox_init.h"
 #endif
 
@@ skipping 14 matching lines @@
   // If |g_target_services| is not null this process is sandboxed. One side
   // effect is that we can't pop dialogs like ChildProcess::WaitForDebugger()
   // does.
   if (command_line.HasSwitch(switches::kPpapiStartupDialog)) {
     if (g_target_services)
       base::debug::WaitForDebugger(2*60, false);
     else
       ChildProcess::WaitForDebugger("Ppapi");
   }
 
+  // Set the default locale to be the current UI language. WebKit uses ICU's
+  // default locale for some font settings (especially switching between
+  // Japanese and Chinese fonts for the same characters).
+  if (command_line.HasSwitch(switches::kLang)) {
+    std::string locale = command_line.GetSwitchValueASCII(switches::kLang);
+    base::i18n::SetICUDefaultLocale(locale);
+  }
+
   MessageLoop main_message_loop;
   base::PlatformThread::SetName("CrPPAPIMain");
 
 #if defined(OS_LINUX)
   content::InitializeSandbox();
 #endif
 
   ChildProcess ppapi_process;
   ppapi_process.set_main_thread(
       new PpapiThread(parameters.command_line, false));  // Not a broker.
 
   main_message_loop.Run();
   return 0;
 }