renderer: implement multiple permission requesting

content/shell/browser/shell_permission_manager.cc

Index: content/shell/browser/shell_permission_manager.cc
diff --git a/content/shell/browser/shell_permission_manager.cc b/content/shell/browser/shell_permission_manager.cc
index fffcfa560c3baf9dd26e7e39c876492fc2650b7e..d78630bbf1b733f3bb525a020eeab8a6ff7f3864 100644
--- a/content/shell/browser/shell_permission_manager.cc
+++ b/content/shell/browser/shell_permission_manager.cc
@@ -22,16 +22,30 @@ void ShellPermissionManager::RequestPermission(
     int request_id,
     const GURL& requesting_origin,
     bool user_gesture,
-    const base::Callback<void(PermissionStatus)>& callback) {
+    const RequestCallback& callback) {
   callback.Run(permission == PermissionType::GEOLOCATION
                    ? PERMISSION_STATUS_GRANTED : PERMISSION_STATUS_DENIED);
 }
 
+void ShellPermissionManager::RequestPermission(
+    const std::vector<PermissionType>& permissions,
+    content::RenderFrameHost* render_frame_host,
+    int request_id,
+    const GURL& requesting_origin,
+    bool user_gesture,
+    const BatchRequestCallback& callback) {
+  std::vector<PermissionStatus> statuses(permissions.size(),
+      PERMISSION_STATUS_DENIED);
+  for (size_t i = 0; i < permissions.size(); i++) {
+    statuses[i] = permissions[i] == PermissionType::GEOLOCATION

[mlamouri (slow - plz ping), 2015/09/02 11:36:42]

Same as above.

+        ? PERMISSION_STATUS_GRANTED : PERMISSION_STATUS_DENIED;
+  }
+  callback.Run(statuses);
+}
+
 void ShellPermissionManager::CancelPermissionRequest(
-    PermissionType permission,
     RenderFrameHost* render_frame_host,
-    int request_id,
-    const GURL& requesting_origin) {
+    int request_id) {
 }
 
 void ShellPermissionManager::ResetPermission(