Remove unused in-process pepper APIs

native_client_sdk/src/libraries/ppapi_cpp/library.dsc

 {
   'SEARCH': [
       '../../../../ppapi/cpp',
       '../../../../ppapi/cpp/dev',
       '../../../../ppapi/utility',
       '../../../../ppapi/utility/graphics',
       '../../../../ppapi/utility/threading',
       '../../../../ppapi/utility/websocket',
   ],
   'TARGETS': [
@@ skipping 51 matching lines @@
         'view.cc',
         'websocket.cc',
 
         # ppapi/cpp/dev
         'cursor_control_dev.cc',
         'file_chooser_dev.cc',
         'font_dev.cc',
         'memory_dev.cc',
         'printing_dev.cc',
         'scriptable_object_deprecated.cc',
-        'selection_dev.cc',
         'truetype_font_dev.cc',
         'view_dev.cc',
-        'zoom_dev.cc',
 
         # ppapi/utility/graphics
         'paint_aggregator.cc',
         'paint_manager.cc',
 
         # ppapi/utility/websocket
         'websocket_api.cc',
 
         # ppapi/utility/threading
         'lock.cc',
@@ skipping 65 matching lines @@
       'DEST': 'include/ppapi/cpp',
     },
     {
       'FILES': [
         'cursor_control_dev.h',
         'file_chooser_dev.h',
         'font_dev.h',
         'memory_dev.h',
         'printing_dev.h',
         'scriptable_object_deprecated.h',
-        'selection_dev.h',
         'truetype_font_dev.h',
         'video_capture_client_dev.h',
         'video_decoder_client_dev.h',
         'view_dev.h',
-        'widget_client_dev.h',
-        'zoom_dev.h',
       ],
       'DEST': 'include/ppapi/cpp/dev',
     },
     {
       'FILES': [
         'completion_callback_factory.h',
         'completion_callback_factory_thread_traits.h',
       ],
       'DEST': 'include/ppapi/utility',
     },
@@ skipping 22 matching lines @@
         'lock.h',
         'simple_thread.h',
       ],
       'DEST': 'include/ppapi/utility/threading',
     },
   ],
   'DEST': 'src',
   'NAME': 'ppapi_cpp',
 }