Remove the in-process PDF viewer from pdf/

pdf/pdf.gyp

Index: pdf/pdf.gyp
diff --git a/pdf/pdf.gyp b/pdf/pdf.gyp
index f47e33ae72a8e05abe5685d58ae356094f35ad62..ca37d890dba300cb394375fa38444eb6e896ce23 100644
--- a/pdf/pdf.gyp
+++ b/pdf/pdf.gyp
@@ -18,43 +18,25 @@
       ],
       'ldflags': [ '-L<(PRODUCT_DIR)',],
       'sources': [
-        'button.h',
-        'button.cc',
         'chunk_stream.h',
         'chunk_stream.cc',
-        'control.h',
-        'control.cc',
         'document_loader.h',
         'document_loader.cc',
         'draw_utils.cc',
         'draw_utils.h',
-        'fading_control.cc',
-        'fading_control.h',
-        'fading_controls.cc',
-        'fading_controls.h',
-        'instance.cc',
-        'instance.h',
-        'number_image_generator.cc',
-        'number_image_generator.h',
         'out_of_process_instance.cc',
         'out_of_process_instance.h',
-        'page_indicator.cc',
-        'page_indicator.h',
         'paint_aggregator.cc',
         'paint_aggregator.h',
         'paint_manager.cc',
         'paint_manager.h',
         'pdf.cc',
         'pdf.h',
-        'progress_control.cc',
-        'progress_control.h',
         'pdf_engine.h',
         'preview_mode_client.cc',
         'preview_mode_client.h',
         'resource.h',
         'resource_consts.h',
-        'thumbnail_control.cc',
-        'thumbnail_control.h',
       ],
       'conditions': [
         ['pdf_engine==0', {