content: permissions: add plumbing to revoke permissions

content/child/permissions/permission_dispatcher_thread_proxy.cc

Index: content/child/permissions/permission_dispatcher_thread_proxy.cc
diff --git a/content/child/permissions/permission_dispatcher_thread_proxy.cc b/content/child/permissions/permission_dispatcher_thread_proxy.cc
index 0ecdfa48a8d67654ae985a75db97a1c79dfee993..b679065465aa2ec2dc9a391e503e759f84947933 100644
--- a/content/child/permissions/permission_dispatcher_thread_proxy.cc
+++ b/content/child/permissions/permission_dispatcher_thread_proxy.cc
@@ -57,7 +57,7 @@ PermissionDispatcherThreadProxy::~PermissionDispatcherThreadProxy() {
 void PermissionDispatcherThreadProxy::queryPermission(
     blink::WebPermissionType type,
     const blink::WebURL& origin,
-    blink::WebPermissionQueryCallback* callback) {
+    blink::WebPermissionCallback* callback) {
   main_thread_task_runner_->PostTask(
       FROM_HERE,
       base::Bind(&PermissionDispatcher::QueryPermissionForWorker,
@@ -68,6 +68,20 @@ void PermissionDispatcherThreadProxy::queryPermission(
                  WorkerTaskRunner::Instance()->CurrentWorkerId()));
 }
 
+void PermissionDispatcherThreadProxy::revokePermission(
+    blink::WebPermissionType type,
+    const blink::WebURL& origin,
+    blink::WebPermissionCallback* callback) {
+  main_thread_task_runner_->PostTask(
+      FROM_HERE,
+      base::Bind(&PermissionDispatcher::RevokePermissionForWorker,
+                 base::Unretained(permission_dispatcher_),
+                 type,
+                 origin.string().utf8(),
+                 base::Unretained(callback),
+                 WorkerTaskRunner::Instance()->CurrentWorkerId()));
+}
+
 void PermissionDispatcherThreadProxy::startListening(
     blink::WebPermissionType type,
     const blink::WebURL& origin,