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

android_webview/browser/aw_browser_permission_request_delegate.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef ANDROID_WEBVIEW_BROWSER_AW_BROWSER_PERMISSION_REQUEST_DELEGATE_H_
 #define ANDROID_WEBVIEW_BROWSER_AW_BROWSER_PERMISSION_REQUEST_DELEGATE_H_
 
 #include "base/callback_forward.h"
 #include "url/gurl.h"
 
@@ skipping 19 matching lines @@
       const base::Callback<void(bool)>& callback) = 0;
 
   virtual void CancelGeolocationPermissionRequests(const GURL& origin) = 0;
 
   virtual void RequestMIDISysexPermission(
       const GURL& origin,
       const base::Callback<void(bool)>& callback) = 0;
 
   virtual void CancelMIDISysexPermissionRequests(const GURL& origin) = 0;
 
+  virtual void RequestSensorPermission(
+      const GURL& origin,
+      const base::Callback<void(bool)>& callback) = 0;
+
+  virtual void CancelSensorPermissionRequests(const GURL& origin) = 0;
+
  protected:
   AwBrowserPermissionRequestDelegate() {}
 };
 
 }  // namespace android_webview
 #endif  // ANDROID_WEBVIEW_BROWSER_AW_BROWSER_PERMISSION_REQUEST_DELEGATE_H_