pdfviewer: path for outputs are relative to some other folder, make them absolute.

gyp/pdfviewer.gyp

 # GYP file to build pdfviewer.
 #
 # To build on Linux:
 #  ./gyp_skia pdfviewer.gyp && make pdfviewer
 #
 {
   'includes': [
     'apptype_console.gypi',
   ],
   'targets': [
@@ skipping 15 matching lines @@
         '../experimental/PdfViewer/pdfparser/native/autogen/SkPdfHeaders_autogen.cpp',
       ],
       'actions': [
         {
           'action_name': 'spec2def',
           'inputs': [
             '../experimental/PdfViewer/spec2def.py',
             '../experimental/PdfViewer/PdfReference-okular-1.txt',
           ],
           'outputs': [
-            '../experimental/PdfViewer/autogen/pdfspec_autogen.py',
+            '<(skia_src_path)/../experimental/PdfViewer/autogen/pdfspec_autogen.py',
           ],
-          'action': ['python', '../experimental/PdfViewer/spec2def.py', '../experimental/PdfViewer/PdfReference-okular-1.txt', '../experimental/PdfViewer/autogen/pdfspec_autogen.py'],
+          'action': ['python', '<(skia_src_path)/../experimental/PdfViewer/spec2def.py', '<(skia_src_path)/../experimental/PdfViewer/PdfReference-okular-1.txt', '<(skia_src_path)/../experimental/PdfViewer/autogen/pdfspec_autogen.py'],
         },
         {
           'action_name': 'generate_code',
           'inputs': [
             '../experimental/PdfViewer/generate_code.py',
             '../experimental/PdfViewer/autogen/pdfspec_autogen.py',
           ],
           'outputs': [
-            '../experimental/PdfViewer/pdfparser/autogen/SkPdfEnums_autogen.h',
-            '../experimental/PdfViewer/pdfparser/native/autogen/SkPdfMapper_autogen.cpp',
-            '../experimental/PdfViewer/pdfparser/native/autogen/SkPdfHeaders_autogen.cpp',
+            '<(skia_src_path)/../experimental/PdfViewer/pdfparser/autogen/SkPdfEnums_autogen.h',
+            '<(skia_src_path)/../experimental/PdfViewer/pdfparser/native/autogen/SkPdfMapper_autogen.cpp',
+            '<(skia_src_path)/../experimental/PdfViewer/pdfparser/native/autogen/SkPdfHeaders_autogen.cpp',
             # TODO(edisonn): ok, there are many more files here, which we should list but since
             # any change in the above should trigger a change here, we should be fine normally
           ],
-          'action': ['python', '../experimental/PdfViewer/generate_code.py', '../experimental/PdfViewer/pdfparser/'],
+          'action': ['python', '<(skia_src_path)/../experimental/PdfViewer/generate_code.py', '<(skia_src_path)/../experimental/PdfViewer/pdfparser/'],
         },
       ],
       'include_dirs': [
         '../experimental/PdfViewer',
         '../experimental/PdfViewer/pdfparser',
         '../experimental/PdfViewer/pdfparser/autogen',
         '../experimental/PdfViewer/pdfparser/native',
         '../experimental/PdfViewer/pdfparser/native/autogen',
       ],
       'dependencies': [
@@ skipping 26 matching lines @@
       ],
     },
   ],
 }
 
 # Local Variables:
 # tab-width:2
 # indent-tabs-mode:nil
 # End:
 # vim: set expandtab tabstop=2 shiftwidth=2: