doesnt link in component build

Source/web/WebPermissionClient.cpp

Index: Source/web/WebPermissionClient.cpp
diff --git a/Source/web/WebPermissionClient.cpp b/Source/web/WebPermissionClient.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..767aa9d39eba4e382dc9a64ffa68e44e6459ce91
--- /dev/null
+++ b/Source/web/WebPermissionClient.cpp
@@ -0,0 +1,27 @@
+// Copyright 2015 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 "public/platform/modules/permissions/WebPermissionClient.h"
+
+#include "core/dom/Document.h"
+#include "core/dom/ExecutionContext.h"
+#include "modules/permissions/PermissionController.h"
+#include "public/platform/Platform.h"
+
+namespace blink {
+
+WebPermissionClient* WebPermissionClient::get(ExecutionContext* executionContext)
+{
+    if (executionContext->isDocument()) {
+        Document* document = toDocument(executionContext);
+        if (!document->frame())
+            return nullptr;
+        PermissionController* controller = PermissionController::from(*document->frame());
+        return controller ? controller->client() : nullptr;
+    }
+    return Platform::current()->permissionClient();
+}
+
+} // namespace blink