NaCl VS Addin Crash Fix

Fixed a crash caused by main Chrome process shutting down, and removed PlatformToolset property from NaCl platform.

BUG=136414

Review URL: https://chromiumcodereview.appspot.com/10823267

git-svn-id: https://nativeclient-sdk.googlecode.com/svn/trunk/src@1410 050acbb0-2703-11df-ab0a-9f3f633ae91d
4 files changed