Add threadsafe version of PermissionManager::GetPermissionStatus

chrome/browser/permissions/permission_context_base.h

Index: chrome/browser/permissions/permission_context_base.h
diff --git a/chrome/browser/permissions/permission_context_base.h b/chrome/browser/permissions/permission_context_base.h
index f556165e1334adbf2f4f866fe7c3528a137b98cc..62530c7b9e223f2770e51748f5faae90569dc52a 100644
--- a/chrome/browser/permissions/permission_context_base.h
+++ b/chrome/browser/permissions/permission_context_base.h
@@ -21,6 +21,7 @@
 class PermissionQueueController;
 #endif
 class GURL;
+class HostContentSettingsMap;
 class PermissionRequestID;
 class Profile;
 
@@ -85,11 +86,18 @@ class PermissionContextBase : public KeyedService {
       const GURL& requesting_origin,
       const GURL& embedding_origin) const;
 
+  // Thread safe version of GetPermissionStatus for consumers that already have
+  // an associated HostContentSettingsMap.
+  virtual ContentSetting GetPermissionStatus(
+      HostContentSettingsMap* host,
+      const GURL& requesting_origin,
+      const GURL& embedding_origin) const;
+
   // Resets the permission to its default value.
   virtual void ResetPermission(const GURL& requesting_origin,
                                const GURL& embedding_origin);
 
-  // Withdraw an existing permission request, no op if the permission request
+  // Withdraw an existing permission reqUest, no op if the permission request

[mlamouri (slow - plz ping), 2016/10/22 11:36:38]

typo: s/reqUest/request/

   // was already cancelled by some other means.
   virtual void CancelPermissionRequest(content::WebContents* web_contents,
                                        const PermissionRequestID& id);
@@ -148,6 +156,7 @@ class PermissionContextBase : public KeyedService {
                                     ContentSetting content_setting);
 
   // Whether the permission should be restricted to secure origins.
+  // Note: Maybe be called from multiple threads.
   virtual bool IsRestrictedToSecureOrigins() const = 0;
 
   content::PermissionType permission_type() const { return permission_type_; }