Pass font prefs to WebKit even if they are the empty string.

chrome/browser/chrome_content_browser_client.cc

Index: chrome/browser/chrome_content_browser_client.cc
diff --git a/chrome/browser/chrome_content_browser_client.cc b/chrome/browser/chrome_content_browser_client.cc
index 5bd42719e839884bf46ee5381b43f25889619ec6..34d0a21adf0fcdd9383b74fd3aad715a6784acb6 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -361,8 +361,7 @@ void FillFontFamilyMap(const PrefService* prefs,
     const char* script = prefs::kWebKitScriptsForFontFamilyMaps[i];
     std::string pref_name = base::StringPrintf("%s.%s", map_name, script);
     std::string font_family = prefs->GetString(pref_name.c_str());
-    if (!font_family.empty())
-      (*map)[script] = UTF8ToUTF16(font_family);
+    (*map)[script] = UTF8ToUTF16(font_family);
   }
 }