[sensors] Add Permission guard to the generic sensor apis.

chrome/browser/content_settings/tab_specific_content_settings.h

Index: chrome/browser/content_settings/tab_specific_content_settings.h
diff --git a/chrome/browser/content_settings/tab_specific_content_settings.h b/chrome/browser/content_settings/tab_specific_content_settings.h
index a50e78861a650c8620561790ad284efd947f0052..2eecc7d56bc157e81bb373b2e7fe8ff66ab437f3 100644
--- a/chrome/browser/content_settings/tab_specific_content_settings.h
+++ b/chrome/browser/content_settings/tab_specific_content_settings.h
@@ -356,6 +356,10 @@ class TabSpecificContentSettings
   void OnMidiSysExAccessed(const GURL& reqesting_origin);
   void OnMidiSysExAccessBlocked(const GURL& requesting_origin);
 
+  // There methods are called to update the status about Sensor access.
+  void OnSensorAccessed(const GURL& reqesting_origin);
+  void OnSensorAccessBlocked(const GURL& requesting_origin);
+
   // Adds the given |SiteDataObserver|. The |observer| is notified when a
   // locale shared object, like for example a cookie, is accessed.
   void AddSiteDataObserver(SiteDataObserver* observer);