work in progress

gyp/experimental.gyp

 # GYP file to build experimental directory.
 {
   'targets': [
     {
       'target_name': 'experimental',
       'type': 'static_library',
       'include_dirs': [
         '../include/config',
         '../include/core',
       ],
@@ skipping 61 matching lines @@
             '../experimental/SkiaExamples/SkiaExamples.xib'
           ],
         }],
       ],
     },
     {
       'target_name': 'multipage_pdf_profiler',
       'type': 'executable',
       'sources': [
         '../experimental/tools/multipage_pdf_profiler.cpp',
+        '../experimental/tools/PageCachingDocument.cpp',
       ],
       'dependencies': [
         'skia_lib.gyp:skia_lib',
         'pdf.gyp:pdf',
         'tools.gyp:proc_stats',
         'tools.gyp:sk_tool_utils',
       ],
     },
     {
       'target_name': 'gmtoskp',
@@ skipping 12 matching lines @@
       'dependencies': [
         'skia_lib.gyp:skia_lib',
         'tools.gyp:resources',
         'tools.gyp:sk_tool_utils',
         'gputest.gyp:skgputest',
       ],
       'includes': [ 'gmslides.gypi', ],
     },
   ],
 }