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

native_client_sdk/src/examples/input_events/example.dsc

 {
   'TOOLS': ['newlib', 'glibc', 'pnacl', 'linux', 'win'],
   'TARGETS': [
     {
       'NAME' : 'input_events',
       'TYPE' : 'main',
       'SOURCES' : [
         'custom_events.cc',
         'custom_events.h',
         'input_events.cc',
         'shared_queue.h',
       ],
       'LIBS': ['ppapi_cpp', 'ppapi', 'pthread']
     }
   ],
   'DATA': [
     'example.js',
   ],
   'DEST': 'examples',
   'NAME': 'input_events',
   'TITLE': 'Input Events',
-  'DESC': """The Input Events example shows how to handle input events in a
-multi-threaded application.  The main thread converts input events to
-non-pepper events and puts them on a queue. The worker thread pulls them off of
-the queue, converts them to a string, and then uses CallOnMainThread so that
-PostMessage can be send the result of the worker thread to the browser.""",
-  'FOCUS': """Multi-threading, keyboard and mouse input, view change, and focus
-events.""",
   'GROUP': 'API',
 }