[NaCl SDK] Make the SDK examples buildable as a packaged app.

native_client_sdk/src/examples/debugging/example.dsc

 {
   'TOOLS': ['newlib'],
   'SEARCH': [
     '.',
     '..',
     '../../tools',
   ],
   'TARGETS': [
     {
       'NAME' : 'debugging',
@@ skipping 19 matching lines @@
 CHROME_ENV+=NACL_UNTRUSTED_EXCEPTION_HANDLING=1
 """,
 
   'DATA': [
     'example.js',
     'handler.py'
   ],
   'DEST': 'examples',
   'NAME': 'debugging',
   'TITLE': 'Debugging',
-  'DESC': """
-Debugging example shows how to use developer only features to enable
-catching an exception, and then using that to create a stacktrace.""",
-  'FOCUS': 'Debugging, Stacktraces.',
   'GROUP': 'Concepts'
 }