Remove obsolete plug-in sandboxing code.
https://bugs.webkit.org/show_bug.cgi?id=107362

Reviewed by Darin Adler.

Source/WebCore:

* WebCore.xcodeproj/project.pbxproj:
* plugins/npapi-sandbox.h: Removed.

Source/WebKit2:

* WebKit2.xcodeproj/project.pbxproj:
* DerivedSources.make:
* PluginProcess/mac/com.apple.WebKit.PluginProcess.sb.in: Removed.

* PluginProcess/mac/PluginProcessMac.mm:
(WebKit::initializeSandbox): Fixed a memory leak in code that stays.

* WebProcess/Plugins/Netscape/NetscapeBrowserFuncs.cpp:
(WebKit::NPN_GetValue):

* WebProcess/Plugins/Netscape/mac/NetscapeSandboxFunctions.h:
* WebProcess/Plugins/Netscape/mac/NetscapeSandboxFunctions.mm:
Removed API related parts. Remaining code will move to a better place in a follow-up
patch, just keeping it here for easier reviewing.
(enterSandbox): Removed no longer used arguments.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@140274 268f45cc-cd09-0410-ab3c-d52691b4dbfc