Implement a runtime headless mode for Linux

headless/lib/browser/headless_platform_event_source.h

Index: headless/lib/browser/headless_platform_event_source.h
diff --git a/headless/lib/browser/headless_platform_event_source.h b/headless/lib/browser/headless_platform_event_source.h
new file mode 100644
index 0000000000000000000000000000000000000000..9681d90b3e7b2dc036c90c34bcb970361c5c0c53
--- /dev/null
+++ b/headless/lib/browser/headless_platform_event_source.h
@@ -0,0 +1,21 @@
+// Copyright 2016 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 HEADLESS_LIB_BROWSER_HEADLESS_PLATFORM_EVENT_SOURCE_H_
+#define HEADLESS_LIB_BROWSER_HEADLESS_PLATFORM_EVENT_SOURCE_H_
+#include "ui/events/platform/platform_event_source.h"
+
+namespace headless {
+
+// A stub event source whose main purpose is to prevent the default platform
+// event source from getting created.
+class HeadlessPlatformEventSource : public ui::PlatformEventSource {
+ public:
+  HeadlessPlatformEventSource();
+  ~HeadlessPlatformEventSource() override;
+};

[sky, 2016/12/08 16:16:35]

private: DISALLOW...

[Sami, 2016/12/08 16:58:35]

Done.

+
+}  // namespace headless
+
+#endif  // HEADLESS_LIB_BROWSER_HEADLESS_PLATFORM_EVENT_SOURCE_H_