Add platform_locale_settings file for CrOS. This is necessary because...

chrome/browser/tab_contents/web_contents_unittest.cc

 // Copyright (c) 2010 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 "app/message_box_flags.h"
 #include "base/logging.h"
 #include "chrome/browser/pref_service.h"
 #include "chrome/browser/renderer_host/render_view_host.h"
 #include "chrome/browser/renderer_host/render_widget_host_view.h"
 #include "chrome/browser/renderer_host/test/test_render_view_host.h"
@@ skipping 740 matching lines @@
 
   // These values have been overridden by the profile preferences.
   EXPECT_EQ("UTF-8", webkit_prefs.default_encoding);
   EXPECT_EQ(20, webkit_prefs.default_font_size);
   EXPECT_EQ(false, webkit_prefs.text_areas_are_resizable);
   EXPECT_EQ(true, webkit_prefs.uses_universal_detector);
 
   // These should still be the default values.
 #if defined(OS_MACOSX)
   const wchar_t kDefaultFont[] = L"Times";
+#elif defined(OS_CHROMEOS)
+  const wchar_t kDefaultFont[] = L"Ascender Serif";
 #else
   const wchar_t kDefaultFont[] = L"Times New Roman";
 #endif
   EXPECT_EQ(kDefaultFont, webkit_prefs.standard_font_family);
   EXPECT_EQ(true, webkit_prefs.javascript_enabled);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // Interstitial Tests
 ////////////////////////////////////////////////////////////////////////////////
@@ skipping 695 matching lines @@
 
   // While the interstitial is showing, let's simulate the hidden page
   // attempting to show a JS message.
   IPC::Message* dummy_message = new IPC::Message;
   bool did_suppress_message = false;
   contents()->RunJavaScriptMessage(L"This is an informative message", L"OK",
       kGURL, MessageBoxFlags::kIsJavascriptAlert, dummy_message,
       &did_suppress_message);
   EXPECT_TRUE(did_suppress_message);
 }