Detach the dependency from host_content_settings_map to extension.

chrome/browser/ui/webui/options/content_settings_handler.cc

Index: chrome/browser/ui/webui/options/content_settings_handler.cc
diff --git a/chrome/browser/ui/webui/options/content_settings_handler.cc b/chrome/browser/ui/webui/options/content_settings_handler.cc
index 99576d3b1d318df4502552924f5fe98662c907df..009541290fbd281d24366b5e8f46a4c04cb80e7d 100644
--- a/chrome/browser/ui/webui/options/content_settings_handler.cc
+++ b/chrome/browser/ui/webui/options/content_settings_handler.cc
@@ -1081,7 +1081,7 @@ void ContentSettingsHandler::GetExceptionsFromHostContentSettingsMap(
   // Keep the exceptions sorted by provider so they will be displayed in
   // precedence order.
   std::vector<std::vector<base::Value*> > all_provider_exceptions;
-  all_provider_exceptions.resize(HostContentSettingsMap::NUM_PROVIDER_TYPES);
+  all_provider_exceptions.resize(map->GetNumProviders());
 
   for (AllPatternsSettings::iterator i = all_patterns_settings.begin();
        i != all_patterns_settings.end();
@@ -1098,9 +1098,19 @@ void ContentSettingsHandler::GetExceptionsFromHostContentSettingsMap(
       parent = one_settings.find(ContentSettingsPattern::Wildcard());
 
     const std::string& source = i->first.second;
-    std::vector<base::Value*>* this_provider_exceptions =
-        &all_provider_exceptions.at(
-            HostContentSettingsMap::GetProviderTypeFromSource(source));
+    std::vector<base::Value*>* this_provider_exceptions = NULL;
+    for (size_t j = 0; j < map->GetNumProviders(); ++j) {
+      const content_settings::ProviderInterface* provider =
+          map->GetProviderAt(j);
+      if (provider->GetProviderName() == source) {
+        this_provider_exceptions = &all_provider_exceptions.at(j);
+        break;
+      }
+    }
+    if (!this_provider_exceptions) {
+      LOG(WARNING) << "Cannot find the provider for " << source;
+      continue;
+    }
 
     // Add the "parent" entry for the non-embedded setting.
     ContentSetting parent_setting =