Move code for old, deprecated Options UI to only ChromeOS

chrome/browser/ui/webui/settings_utils_mac.mm

Index: chrome/browser/ui/webui/settings_utils_mac.mm
diff --git a/chrome/browser/ui/webui/settings_utils_mac.mm b/chrome/browser/ui/webui/settings_utils_mac.mm
index 1f68f49dae76f40078fb7fca2922d7fea7b175a3..0611e978343804f94026a3cec9f9940089877779 100644
--- a/chrome/browser/ui/webui/settings_utils_mac.mm
+++ b/chrome/browser/ui/webui/settings_utils_mac.mm
@@ -9,6 +9,28 @@
 #include "base/logging.h"
 #include "base/mac/mac_logging.h"
 #include "base/mac/scoped_aedesc.h"
+#include "base/mac/scoped_nsautorelease_pool.h"
+#include "base/strings/sys_string_conversions.h"
+#include "chrome/common/pref_names.h"
+#include "components/prefs/pref_service.h"
+
+namespace {
+void ValidateFontFamily(PrefService* prefs, const char* family_pref_name) {
+  // The native font settings dialog saved fonts by the font name, rather
+  // than the family name.  This worked for the old dialog since
+  // -[NSFont fontWithName:size] accepted a font or family name, but the
+  // behavior was technically wrong.  Since we really need the family name for
+  // the webui settings window, we will fix the saved preference if necessary.
+  NSString* family_name =
+      base::SysUTF8ToNSString(prefs->GetString(family_pref_name));
+  NSFont* font = [NSFont fontWithName:family_name size:[NSFont systemFontSize]];
+  if (font &&
+      [[font familyName] caseInsensitiveCompare:family_name] != NSOrderedSame) {
+    std::string new_family_name = base::SysNSStringToUTF8([font familyName]);
+    prefs->SetString(family_pref_name, new_family_name);
+  }
+}
+}  // namespace
 
 namespace settings_utils {
 
@@ -41,4 +63,10 @@ void ShowManageSSLCertificates(content::WebContents* web_contents) {
    launchIdentifier:nil];
 }
 
+void ValidateSavedFonts(PrefService* prefs) {
+  ValidateFontFamily(prefs, prefs::kWebKitSerifFontFamily);
+  ValidateFontFamily(prefs, prefs::kWebKitSansSerifFontFamily);
+  ValidateFontFamily(prefs, prefs::kWebKitFixedFontFamily);
+}
+
 }  // namespace settings_utils