webui: minimize webui flicker.

ui/base/webui/web_ui_util.cc

 // Copyright 2013 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 "ui/base/webui/web_ui_util.h"
 
 #include <vector>
 
 #include "base/base64.h"
 #include "base/debug/trace_event.h"
@@ skipping 107 matching lines @@
             pos + 1, stripped_path.length() - pos - 1), &factor)) {
       // Strip scale factor specification from path.
       stripped_path.remove_suffix(stripped_path.length() - pos);
       stripped_path.CopyToString(path);
     }
     if (scale_factor)
       *scale_factor = factor;
   }
 }
 
-// static
-void SetFontAndTextDirection(base::DictionaryValue* localized_strings) {
-  int web_font_family_id = IDS_WEB_FONT_FAMILY;
-  int web_font_size_id = IDS_WEB_FONT_SIZE;
+std::string GetFontFamily() {
+  std::string font_family = l10n_util::GetStringUTF8(
 #if defined(OS_WIN)
-  // Vary font settings for Windows XP.
-  if (base::win::GetVersion() < base::win::VERSION_VISTA) {
-    web_font_family_id = IDS_WEB_FONT_FAMILY_XP;
-    web_font_size_id = IDS_WEB_FONT_SIZE_XP;
-  }
+      base::win::GetVersion() < base::win::VERSION_VISTA ?
+          IDS_WEB_FONT_FAMILY_XP :
 #endif
-
-  std::string font_family = l10n_util::GetStringUTF8(web_font_family_id);
+          IDS_WEB_FONT_FAMILY);
 
 // TODO(dnicoara) Remove Ozone check when PlatformFont support is introduced
 // into Ozone: crbug.com/320050
 #if defined(OS_LINUX) && !defined(OS_CHROMEOS) && !defined(USE_OZONE)
   font_family = ui::ResourceBundle::GetSharedInstance().GetFont(
       ui::ResourceBundle::BaseFont).GetFontName() + ", " + font_family;
 #endif
 
-  localized_strings->SetString("fontfamily", font_family);
-  localized_strings->SetString("fontsize",
-      l10n_util::GetStringUTF8(web_font_size_id));
-  localized_strings->SetString("textdirection",
-      base::i18n::IsRTL() ? "rtl" : "ltr");
+  return font_family;
+}
+
+std::string GetFontSize() {
+  return l10n_util::GetStringUTF8(
+#if defined(OS_WIN)
+      base::win::GetVersion() < base::win::VERSION_VISTA ?
+          IDS_WEB_FONT_SIZE_XP :
+#endif
+          IDS_WEB_FONT_SIZE);
+}
+
+std::string GetTextDirection() {
+  return base::i18n::IsRTL() ? "rtl" : "ltr";
+}
+
+void SetFontAndTextDirection(base::DictionaryValue* localized_strings) {
+  localized_strings->SetString("fontfamily", GetFontFamily());
+  localized_strings->SetString("fontsize", GetFontSize());
+  localized_strings->SetString("textdirection", GetTextDirection());
 }
 
 }  // namespace webui