Gather metrics on hosted app unlimitedStorage usage

chrome/browser/extensions/extension_special_storage_policy.h

Index: chrome/browser/extensions/extension_special_storage_policy.h
diff --git a/chrome/browser/extensions/extension_special_storage_policy.h b/chrome/browser/extensions/extension_special_storage_policy.h
index eec75776286668b4dfc1c25d4d77c0c6a793badd..fda9be682722e8848b3104906542a6802b06d30b 100644
--- a/chrome/browser/extensions/extension_special_storage_policy.h
+++ b/chrome/browser/extensions/extension_special_storage_policy.h
@@ -15,6 +15,10 @@
 
 class CookieSettings;
 
+namespace content {
+class BrowserContext;
+}
+
 namespace extensions {
 class Extension;
 }
@@ -37,7 +41,8 @@ class ExtensionSpecialStoragePolicy : public storage::SpecialStoragePolicy {
   virtual bool HasSessionOnlyOrigins() OVERRIDE;
 
   // Methods used by the ExtensionService to populate this class.
-  void GrantRightsForExtension(const extensions::Extension* extension);
+  void GrantRightsForExtension(const extensions::Extension* extension,
+                               content::BrowserContext* browser_context);
   void RevokeRightsForExtension(const extensions::Extension* extension);
   void RevokeRightsForAllExtensions();