MacViews: Guard Objective-C bits in content::WebContentsViewDelegate with __OBJC__

content/public/browser/web_contents_view_delegate_mac.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 CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_VIEW_DELEGATE_MAC_H_
+#define CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_VIEW_DELEGATE_MAC_H_
+
+#import <Cocoa/Cocoa.h>
+
+#include "content/common/content_export.h"
+#include "content/public/browser/web_contents_view_delegate.h"
+
+@protocol RenderWidgetHostViewMacDelegate;
+
+namespace content {
+class RenderWidgetHost;
+
+// Mac version of WebContentsViewDelegate, to add delegate methods that require
+// an Objective C++ build.
+class CONTENT_EXPORT WebContentsViewDelegateMac
+    : public WebContentsViewDelegate {
+ public:
+  // Returns a newly-created delegate for the RenderWidgetHostViewMac, to handle
+  // events on the responder chain.
+  virtual NSObject<RenderWidgetHostViewMacDelegate>*
+      CreateRenderWidgetHostViewDelegate(
+          RenderWidgetHost* render_widget_host) = 0;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_VIEW_DELEGATE_MAC_H_