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

android_webview/browser/aw_browser_permission_request_delegate.h

Index: android_webview/browser/aw_browser_permission_request_delegate.h
diff --git a/android_webview/browser/aw_browser_permission_request_delegate.h b/android_webview/browser/aw_browser_permission_request_delegate.h
index a0144a1cff2d27d25e8bed6111014300828cec90..790491cf64bc7285ae3cb558ed036719ca770532 100644
--- a/android_webview/browser/aw_browser_permission_request_delegate.h
+++ b/android_webview/browser/aw_browser_permission_request_delegate.h
@@ -37,6 +37,12 @@ class AwBrowserPermissionRequestDelegate {
 
   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() {}
 };