Auto-generates the font family scripts at build time.

chrome/browser/ui/prefs/prefs_tab_helper.cc

Index: chrome/browser/ui/prefs/prefs_tab_helper.cc
diff --git a/chrome/browser/ui/prefs/prefs_tab_helper.cc b/chrome/browser/ui/prefs/prefs_tab_helper.cc
index 1bf7507185a7eb211e8192a8392265c4a3cfa3b1..b12a559d4cc56cd396d8a68f80c24f501ebeb57e 100644
--- a/chrome/browser/ui/prefs/prefs_tab_helper.cc
+++ b/chrome/browser/ui/prefs/prefs_tab_helper.cc
@@ -15,6 +15,7 @@
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/renderer_preferences_util.h"
 #include "chrome/common/chrome_notification_types.h"
+#include "chrome/common/font_family_scripts.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/pref_names_util.h"
 #include "components/user_prefs/pref_registry_syncable.h"
@@ -123,12 +124,11 @@ const int kPrefsToObserveLength = arraysize(kPrefsToObserve);
 // per-script font prefs.  For example, if |map_name| is "fonts.serif", then
 // "fonts.serif.Arab", "fonts.serif.Hang", etc. are registered.
 void RegisterFontFamilyMap(PrefRegistrySyncable* registry,
-                           const char* map_name,
                            const std::set<std::string>& fonts_with_defaults) {
-  for (size_t i = 0; i < prefs::kWebKitScriptsForFontFamilyMapsLength; ++i) {
-    const char* script = prefs::kWebKitScriptsForFontFamilyMaps[i];
-    std::string pref_name_str = base::StringPrintf("%s.%s", map_name, script);
-    const char* pref_name = pref_name_str.c_str();
+  // kFontFamilyScripts is auto-generated at build time in order to
+  // have all the data in the static RO segment rather than heap allocated.
+  for (size_t i = 0; i < arraysize(kFontFamilyScripts); ++i) {
+    const char* pref_name = kFontFamilyScripts[i];
     if (fonts_with_defaults.find(pref_name) == fonts_with_defaults.end()) {
       // We haven't already set a default value for this font preference, so set
       // an empty string as the default.
@@ -539,20 +539,7 @@ void PrefsTabHelper::RegisterUserPrefs(PrefRegistrySyncable* registry) {
   }
 
   // Register font prefs that don't have defaults.
-  RegisterFontFamilyMap(registry, prefs::kWebKitStandardFontFamilyMap,
-                        fonts_with_defaults);
-  RegisterFontFamilyMap(registry, prefs::kWebKitFixedFontFamilyMap,
-                        fonts_with_defaults);
-  RegisterFontFamilyMap(registry, prefs::kWebKitSerifFontFamilyMap,
-                        fonts_with_defaults);
-  RegisterFontFamilyMap(registry, prefs::kWebKitSansSerifFontFamilyMap,
-                        fonts_with_defaults);
-  RegisterFontFamilyMap(registry, prefs::kWebKitCursiveFontFamilyMap,
-                        fonts_with_defaults);
-  RegisterFontFamilyMap(registry, prefs::kWebKitFantasyFontFamilyMap,
-                        fonts_with_defaults);
-  RegisterFontFamilyMap(registry, prefs::kWebKitPictographFontFamilyMap,
-                        fonts_with_defaults);
+  RegisterFontFamilyMap(registry, fonts_with_defaults);
 
   registry->RegisterLocalizedIntegerPref(prefs::kWebKitDefaultFontSize,
                                          IDS_DEFAULT_FONT_SIZE,