Remove lots of dead web/ classes.

sky/engine/public/platform/WebPlatformEventListener.h

Index: sky/engine/public/platform/WebPlatformEventListener.h
diff --git a/sky/engine/public/platform/WebPlatformEventListener.h b/sky/engine/public/platform/WebPlatformEventListener.h
deleted file mode 100644
index 7a7b901f5fd269aa23199298fc52a00501188dd6..0000000000000000000000000000000000000000
--- a/sky/engine/public/platform/WebPlatformEventListener.h
+++ /dev/null
@@ -1,17 +0,0 @@
-// 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 WebPlatformEventListener_h
-#define WebPlatformEventListener_h
-
-namespace blink {
-
-class WebPlatformEventListener {
-public:
-    virtual ~WebPlatformEventListener() { }
-};
-
-} // namespace blink
-
-#endif // WebPlatformEventListener_h