permissions: add layout tests for multiple requests

third_party/WebKit/Source/modules/permissions/Permissions.cpp

 // 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.
 
 #include "config.h"
 #include "modules/permissions/Permissions.h"
 
 #include "bindings/core/v8/Dictionary.h"
 #include "bindings/core/v8/Nullable.h"
 #include "bindings/core/v8/ScriptPromise.h"
@@ skipping 142 matching lines @@
         Nullable<WebPermissionType> type = parsePermission(scriptState, rawPermission, exceptionState);
         if (exceptionState.hadException())
             return exceptionState.reject(scriptState);
 
         permissions->operator[](i) = type.get();
     }
 
     ScriptPromiseResolver* resolver = ScriptPromiseResolver::create(scriptState);
     ScriptPromise promise = resolver->promise();
 
-    client->requestPermissions(*permissions, KURL(KURL(), scriptState->executionContext()->securityOrigin()->toString()), new PermissionsCallback(resolver, permissions.release()));
+    WebVector<WebPermissionType> permissionsCopy = *permissions;
+    client->requestPermissions(permissionsCopy, KURL(KURL(), scriptState->executionContext()->securityOrigin()->toString()), new PermissionsCallback(resolver, permissions.release()));
     return promise;
 }
 
 ScriptPromise Permissions::revoke(ScriptState* scriptState, const Dictionary& rawPermission)
 {
     WebPermissionClient* client = getClient(scriptState->executionContext());
     if (!client)
         return ScriptPromise::rejectWithDOMException(scriptState, DOMException::create(InvalidStateError, "In its current state, the global scope can't revoke permissions."));
 
     ExceptionState exceptionState(ExceptionState::GetterContext,  "revoke", "Permissions", scriptState->context()->Global(), scriptState->isolate());
     Nullable<WebPermissionType> type = parsePermission(scriptState, rawPermission, exceptionState);
     if (exceptionState.hadException())
         return exceptionState.reject(scriptState);
 
     ScriptPromiseResolver* resolver = ScriptPromiseResolver::create(scriptState);
     ScriptPromise promise = resolver->promise();
 
     client->revokePermission(type.get(), KURL(KURL(), scriptState->executionContext()->securityOrigin()->toString()), new PermissionCallback(resolver, type.get()));
     return promise;
 }
 
 } // namespace blink