Add an option to have a PdfViewer in SampleApp. Add a parameter --pdfDir to pass the dir with pdfs.…

gyp/SampleApp.gyp

 {
+  'variables': {
+    #manaully set sample_pdf_file_viewer to 1 to have the PdfViewer in SampleApp
+    'sample_pdf_file_viewer%': 0,
+  },
   'targets': [
     {
       'target_name': 'SampleApp',
       'type': 'executable',
       'mac_bundle' : 1,
       'include_dirs' : [
         '../src/core',
         '../src/effects', #needed for BlurMask.h
         '../gm',       # needed to pull gm.h
         '../samplecode', # To pull SampleApp.h and SampleCode.h
@@ skipping 132 matching lines @@
       'dependencies': [
         'skia_lib.gyp:skia_lib',
         'views.gyp:views',
         'animator.gyp:animator',
         'xml.gyp:xml',
         'experimental.gyp:experimental',
         'pdf.gyp:pdf',
         'views_animated.gyp:views_animated',
         'lua.gyp:lua',
       ],
-      'conditions' : [
+     'conditions' : [
+       [ 'sample_pdf_file_viewer == 1', {
+         'defines': [
+           'SAMPLE_PDF_FILE_VIEWER',
+         ],
+         'dependencies': [
+           'pdfviewer.gyp:libpdfviewer',
+         ],
+         'include_dirs' : [
+           '../experimental/PdfViewer/pdfparser/podofo',
+         ],
+         'sources': [
+           '../samplecode/SamplePdfFileViewer.cpp',
+         ]
+       }],      
        [ 'skia_os in ["linux", "freebsd", "openbsd", "solaris", "chromeos"]', {
          'sources!': [
             '../samplecode/SampleDecode.cpp',
          ],
         }],
         [ 'skia_os == "win"', {
           'sources!': [
             # require UNIX functions
             '../samplecode/SampleEncode.cpp',
           ],
@@ skipping 142 matching lines @@
       },
     },
   ],
 }
 
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