[Chromium] Move WebKitPlatformSupport declaration to Platform.h
https://bugs.webkit.org/show_bug.cgi?id=110262

Reviewed by Adam Barth.

In preparation for removing WebKitPlatformSupport.h entirely (once
downstream references to that file have been updated). Part of a
larger refactoring series; see tracking bug 82948.

Source/Platform:

* chromium/public/Platform.h:
(WebKitPlatformSupport):
(WebKit::WebKitPlatformSupport::~WebKitPlatformSupport):
(WebKit):

Source/WebKit/chromium:

* public/platform/WebKitPlatformSupport.h:


git-svn-id: https://svn.webkit.org/repository/webkit/trunk/Source/Platform/chromium/public@143401 268f45cc-cd09-0410-ab3c-d52691b4dbfc
diff --git a/Platform.h b/Platform.h
index 39e9df3..ee180cb 100644
--- a/Platform.h
+++ b/Platform.h
@@ -485,6 +485,11 @@
     virtual ~Platform() { }
 };
 
+class WebKitPlatformSupport : public Platform {
+protected:
+    ~WebKitPlatformSupport() { }
+};
+
 } // namespace WebKit
 
 #endif