Refactor how we handle resources path in Tests.

gyp/tests.gypi

 # Common gypi for unit tests.
 {
   'include_dirs': [
     '../src/core',
     '../src/effects',
     '../src/image',
     '../src/lazy',
     '../src/images',
     '../src/pathops',
     '../src/pdf',
     '../src/pipe/utils',
     '../src/utils',
     '../src/utils/debugger',
-    '../tools/',
 
     # Needed for TDStackNesterTest.
     '../experimental/PdfViewer',
     '../experimental/PdfViewer/src',
   ],
   'dependencies': [
-    'skia_lib.gyp:skia_lib',
     'experimental.gyp:experimental',
     'flags.gyp:flags',
     'pdf.gyp:pdf',
+    'resources.gyp:resources',
+    'skia_lib.gyp:skia_lib',
     'tools.gyp:picture_utils',
   ],
   'sources': [
     '../tests/Test.cpp',
     '../tests/Test.h',
 
     '../tests/AAClipTest.cpp',
     '../tests/ARGBImageEncoderTest.cpp',
     '../tests/AndroidPaintTest.cpp',
     '../tests/AnnotationTest.cpp',
@@ skipping 159 matching lines @@
 
     '../tests/PipeTest.cpp',
     '../src/pipe/utils/SamplePipeControllers.cpp',
 
     '../tests/TDStackNesterTest.cpp',
     '../experimental/PdfViewer/src/SkTDStackNester.h',
 
     '../tools/sk_tool_utils.cpp',
   ],
 }