Refactor how we handle resources path in Tests.

This idea emerged while doing https://codereview.chromium.org/321723002/
(commit 880914c35c8f7fc2e9c57134134c883baf66e538).

BUG=None
TEST=make tests && out/Debug/tests
R=mtklein@google.com

Author: tfarina@chromium.org

Review URL: https://codereview.chromium.org/346453002
diff --git a/gyp/tests.gypi b/gyp/tests.gypi
index 556143f..2a7dddd 100644
--- a/gyp/tests.gypi
+++ b/gyp/tests.gypi
@@ -11,17 +11,17 @@
     '../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': [