browser: Put simple_message_box.h and chrome_web_contents_view_delegate.h into chrome namespace.

chrome/browser/ui/webui/chromeos/mobile_setup_dialog.cc

Index: chrome/browser/ui/webui/chromeos/mobile_setup_dialog.cc
diff --git a/chrome/browser/ui/webui/chromeos/mobile_setup_dialog.cc b/chrome/browser/ui/webui/chromeos/mobile_setup_dialog.cc
index eaaa664e973a97da7a0100a0256ea443b76cc3a2..cbdee9403b09daca3c0be32558ac8f1bd3f24c8b 100644
--- a/chrome/browser/ui/webui/chromeos/mobile_setup_dialog.cc
+++ b/chrome/browser/ui/webui/chromeos/mobile_setup_dialog.cc
@@ -143,10 +143,10 @@ void MobileSetupDialogDelegate::OnCloseContents(WebContents* source,
     return;
   }
 
-  *out_close_dialog = browser::ShowMessageBox(dialog_window_,
+  *out_close_dialog = chrome::ShowMessageBox(dialog_window_,
       l10n_util::GetStringUTF16(IDS_MOBILE_SETUP_TITLE),
       l10n_util::GetStringUTF16(IDS_MOBILE_CANCEL_ACTIVATION),
-      browser::MESSAGE_BOX_TYPE_QUESTION);
+      chrome::MESSAGE_BOX_TYPE_QUESTION);
 }
 
 bool MobileSetupDialogDelegate::ShouldShowDialogTitle() const {