Remove pdfviewer.

gyp/SampleApp.gyp

Index: gyp/SampleApp.gyp
diff --git a/gyp/SampleApp.gyp b/gyp/SampleApp.gyp
index edcba1078ead6d18e4606e91907c3f219f804c92..8a288ce03c911686c78f38e84176cb302f5c1370 100644
--- a/gyp/SampleApp.gyp
+++ b/gyp/SampleApp.gyp
@@ -1,9 +1,5 @@
 #
 {
-  'variables': {
-    #manually set sample_pdf_file_viewer to 1 to have the PdfViewer in SampleApp
-    'sample_pdf_file_viewer%': 0,
-  },
   'targets': [
     {
       'target_name': 'SampleApp',
@@ -150,20 +146,6 @@
         'lua.gyp:lua',
       ],
      'conditions' : [
-       [ 'sample_pdf_file_viewer == 1', {
-         'defines': [
-           'SAMPLE_PDF_FILE_VIEWER',
-         ],
-         'dependencies': [
-           'pdfviewer_lib.gyp:pdfviewer_lib',
-         ],
-         'include_dirs' : [
-           '../experimental/PdfViewer/inc',
-         ],
-         'sources': [
-           '../samplecode/SamplePdfFileViewer.cpp',
-         ]
-       }],
         [ 'skia_os == "win"', {
           'sources!': [
             # require UNIX functions