blink: permissions: add plumbing to revoke permissions

public/platform/modules/permissions/WebPermissionClient.h

Index: public/platform/modules/permissions/WebPermissionClient.h
diff --git a/public/platform/modules/permissions/WebPermissionClient.h b/public/platform/modules/permissions/WebPermissionClient.h
index efc8811b81bb5f4f33b96c8a9b1edb567632bad7..e3f175cdd4a5171f6dde723cf7fab6733432579d 100644
--- a/public/platform/modules/permissions/WebPermissionClient.h
+++ b/public/platform/modules/permissions/WebPermissionClient.h
@@ -11,7 +11,7 @@
 
 namespace blink {
 
-using WebPermissionQueryCallback = WebCallbacks<WebPermissionStatus, void>;
+using WebPermissionCallback = WebCallbacks<WebPermissionStatus, void>;

[mlamouri (slow - plz ping), 2015/07/17 13:18:03]

I think this change will break Chromium. You might want to have the two types
defined then remove the QueryCallback when Chromium has been updated.

[Lalit Maganti, 2015/07/17 13:47:35]

Done.

 
 class WebPermissionObserver;
 class WebURL;
@@ -21,7 +21,10 @@ class WebURL;
 class WebPermissionClient {
 public:
     // Query the permission status of a given origin for a specific permission.
-    virtual void queryPermission(WebPermissionType, const WebURL&, WebPermissionQueryCallback*) { }
+    virtual void queryPermission(WebPermissionType, const WebURL&, WebPermissionCallback*) { }
+
+    // Revoke a specific permission for a given origin.
+    virtual void revokePermission(WebPermissionType, const WebURL&, WebPermissionCallback*) { }
 
     // Listen for permission changes for a given origin and inform the observer
     // when they happen. The observer is not owned by the WebPermissionClient.