Set file tokens for NaCl main nexe if available to enable validation caching.

chrome/test/data/nacl/nacl_test_data.gyp

Index: chrome/test/data/nacl/nacl_test_data.gyp
diff --git a/chrome/test/data/nacl/nacl_test_data.gyp b/chrome/test/data/nacl/nacl_test_data.gyp
index 589a12fb891a062275ec61d4e326984f4605e856..b6769665e61ab3774532fff7c95751831b4b8add 100644
--- a/chrome/test/data/nacl/nacl_test_data.gyp
+++ b/chrome/test/data/nacl/nacl_test_data.gyp
@@ -70,6 +70,37 @@
       },
     },
     {
+      'target_name': 'extension_validation_cache',
+      'type': 'none',
+      'variables': {
+        'nexe_target': 'extension_validation_cache',
+        'build_newlib': 1,
+        'build_glibc': 0,

[teravest, 2014/05/21 16:49:42]

Are you only building newlib just to make testing faster?

[jvoung (off chromium), 2014/05/21 21:10:56]

No it's not just the testing time. There are some assumptions in the test that
are specific to newlib right now:

- the number of validation queries/settings varies.  It would be more with glibc
-- from the open_resource uses, and fewer for PNaCl because the main nexe is
placed in a temp file.
- the tester jig is hardcoded to inherit from the newlib class
- the test directory path commandline flag for loading the unpacked extension is
specific to newlib right now too

It might be good to at least add the glibc case but I just didn't do that yet.

Added a comment if that helps.

+        'build_pnacl_newlib': 0,
+        # Need a new directory to not clash with with other extension
+        # tests's files (e.g., manifest.json).
+        'nexe_destination_dir': 'nacl_test_data/extension_vcache_test',
+        'sources': [
+          'simple.cc',
+        ],
+        'test_files': [
+          # TODO(ncbray) move into chrome/test/data/nacl when all tests are
+          # converted.
+          '<(DEPTH)/ppapi/native_client/tools/browser_tester/browserdata/nacltest.js',
+          'extension_validation_cache/extension_validation_cache.html',
+          'extension_validation_cache/extension_validation_cache.js',
+          # Turns the test data directory into an extension.
+          # Use a different nexe_destination_dir to isolate the files.
+          # Note that the .nexe names are embedded in this file.
+          'extension_validation_cache/manifest.json',
+          'load_util.js',
+        ],
+      },
+      'dependencies': [
+        '<(DEPTH)/native_client/tools.gyp:prep_toolchain',
+      ],
+    },
+    {
       'target_name': 'sysconf_nprocessors_onln_test',
       'type': 'none',
       'variables': {