Use GetSwitchValueASCII.

chrome/common/child_thread.cc

Index: chrome/common/child_thread.cc
===================================================================
--- chrome/common/child_thread.cc	(revision 31117)
+++ chrome/common/child_thread.cc	(working copy)
@@ -17,9 +17,8 @@
 
 
 ChildThread::ChildThread() {
-  channel_name_ = WideToASCII(
-      CommandLine::ForCurrentProcess()->GetSwitchValue(
-          switches::kProcessChannelID));
+  channel_name_ = CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
+      switches::kProcessChannelID);
   Init();
 }
 
@@ -32,9 +31,9 @@
   check_with_browser_before_shutdown_ = false;
   message_loop_ = MessageLoop::current();
   if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kUserAgent)) {
-    webkit_glue::SetUserAgent(WideToUTF8(
-        CommandLine::ForCurrentProcess()->GetSwitchValue(
-            switches::kUserAgent)));
+    webkit_glue::SetUserAgent(
+        CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
+            switches::kUserAgent));
   }
 
   channel_.reset(new IPC::SyncChannel(channel_name_,