[Chromium] Move another block of headers from WebKit/chromium/public/platform to...

[Chromium] Move another block of headers from WebKit/chromium/public/platform to Platform/chromium/public
https://bugs.webkit.org/show_bug.cgi?id=82862

Rubber-stamped by Eric Seidel.

Source/Platform:

* Platform.gypi:
* chromium/public/WebAudioBus.h: Copied from Source/WebKit/chromium/public/platform/WebAudioBus.h.
* chromium/public/WebAudioDevice.h: Copied from Source/WebKit/chromium/public/platform/WebAudioDevice.h.
* chromium/public/WebGamepad.h: Copied from Source/WebKit/chromium/public/platform/WebGamepad.h.
* chromium/public/WebGamepads.h: Copied from Source/WebKit/chromium/public/platform/WebGamepads.h.
* chromium/public/WebSocketStreamError.h: Copied from Source/WebKit/chromium/public/platform/WebSocketStreamError.h.
* chromium/public/WebSocketStreamHandle.h: Copied from Source/WebKit/chromium/public/platform/WebSocketStreamHandle.h.
* chromium/public/WebSocketStreamHandleClient.h: Copied from Source/WebKit/chromium/public/platform/WebSocketStreamHandleClient.h.

Source/WebCore:

This is part of the change discussed in
https://lists.webkit.org/pipermail/webkit-dev/2012-March/020166.html

* WebCore.gypi:
* platform/chromium/support/WebAudioBus.cpp: Copied from Source/WebKit/chromium/src/WebAudioBus.cpp.

Source/WebKit/chromium:

* WebKit.gyp:
* public/platform/WebAudioBus.h: Replaced.
* public/platform/WebAudioDevice.h: Replaced.
* public/platform/WebGamepad.h: Replaced.
* public/platform/WebGamepads.h: Replaced.
* public/platform/WebSocketStreamError.h: Replaced.
* public/platform/WebSocketStreamHandle.h: Replaced.
* public/platform/WebSocketStreamHandleClient.h: Replaced.
* src/WebAudioBus.cpp: Removed.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@112834 268f45cc-cd09-0410-ab3c-d52691b4dbfc