Move rest of param validation in browsing_data_api.cc to ::RunAsync.

chrome/browser/extensions/api/browsing_data/browsing_data_api.h

Index: chrome/browser/extensions/api/browsing_data/browsing_data_api.h
diff --git a/chrome/browser/extensions/api/browsing_data/browsing_data_api.h b/chrome/browser/extensions/api/browsing_data/browsing_data_api.h
index 0b6f231af24b6be6d0573db3e84e7af19e8300d2..8ffab0f25df8fa83f747f9f5e7fa4554bc09cdfa 100644
--- a/chrome/browser/extensions/api/browsing_data/browsing_data_api.h
+++ b/chrome/browser/extensions/api/browsing_data/browsing_data_api.h
@@ -110,9 +110,11 @@ class BrowsingDataRemoverFunction : public ChromeAsyncExtensionFunction,
   void CheckRemovingPluginDataSupported(
       scoped_refptr<PluginPrefs> plugin_prefs);
 
-  // Parse the developer-provided |origin_types| object into an origin_type_mask
+  // Parse the developer-provided |origin_types| object into |origin_type_mask|
   // that can be used with the BrowsingDataRemover.
-  int ParseOriginTypeMask(const base::DictionaryValue& options);
+  // Returns true if parsing was successful.
+  bool ParseOriginTypeMask(const base::DictionaryValue& options,
+                           int* origin_type_mask);
 
   // Called when we're ready to start removing data.
   void StartRemoving();