[HTML5] Implementation of WebSockets (WebKit).

Added binding to android port for Html5 WebSockets.
Added external API for enabling\disabling from browser.
SSL Web Sockets are not implemented in the current version.

Change-Id: Ie37569107c429492ee91b153939ab1ef4e07435e

Conflicts:

	Source/WebKit/android/jni/WebCoreJniOnLoad.cpp