[NaCl SDK] Don't copy .h files to src in SDK.

native_client_sdk/src/libraries/ppapi_cpp/library.dsc

Index: native_client_sdk/src/libraries/ppapi_cpp/library.dsc
diff --git a/native_client_sdk/src/libraries/ppapi_cpp/library.dsc b/native_client_sdk/src/libraries/ppapi_cpp/library.dsc
index bf2180997294b7aa428057ef5926e7797f1e4906..8e54e54e9d05f7e6490110c5a1b9cdb598879474 100644
--- a/native_client_sdk/src/libraries/ppapi_cpp/library.dsc
+++ b/native_client_sdk/src/libraries/ppapi_cpp/library.dsc
@@ -12,70 +12,35 @@
       'NAME' : 'ppapi_cpp',
       'TYPE' : 'lib',
       'SOURCES' : [
-          'module_embedder.h',
           'ppp_entrypoints.cc',
           'array_output.cc',
-          'array_output.h',
           'audio.cc',
-          'audio.h',
           'audio_config.cc',
-          'audio_config.h',
-          'completion_callback.h',
           'core.cc',
-          'core.h',
           'file_io.cc',
-          'file_io.h',
           'file_ref.cc',
-          'file_ref.h',
           'file_system.cc',
-          'file_system.h',
           'fullscreen.cc',
-          'fullscreen.h',
           'graphics_2d.cc',
-          'graphics_2d.h',
           'graphics_3d.cc',
-          'graphics_3d.h',
           'graphics_3d_client.cc',
-          'graphics_3d_client.h',
           'image_data.cc',
-          'image_data.h',
           'input_event.cc',
-          'input_event.h',
           'instance.cc',
-          'instance.h',
           'instance_handle.cc',
-          'instance_handle.h',
           'lock.cc',
-          'lock.h',
-          'logging.h',
           'module.cc',
-          'module.h',
-          'module_impl.h',
           'mouse_cursor.cc',
-          'mouse_cursor.h',
           'mouse_lock.cc',
-          'mouse_lock.h',
-          'output_traits.h',
-          'point.h',
           'rect.cc',
-          'rect.h',
           'resource.cc',
-          'resource.h',
-          'size.h',
           'url_loader.cc',
-          'url_loader.h',
           'url_request_info.cc',
-          'url_request_info.h',
           'url_response_info.cc',
-          'url_response_info.h',
           'var.cc',
-          'var.h',
           'var_array_buffer.cc',
-          'var_array_buffer.h',
           'view.cc',
-          'view.h',
           'websocket.cc',
-          'websocket.h',
 
 
           # Utility sources.