Make the pnacl translator files in chrome depend on the pnacl_translator stamp.

Otherwise, the pnacl files won't get re-layed out when only
the pnacl translator files have changed.

BUG=none
TEST=
(1) ninja -C out/Release pnacl_support_extension
(2) touch the SOURCE_SHA1 file (or change TOOLS_REVISION + hashes, and run gclient runhooks)
(3) ninja again (gets re-layed out)
(4) ninja again (nothing happens)

Review URL: https://codereview.chromium.org/12578018

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@189988 0039d316-1c4b-4281-b951-d872f2087c98

ppapi/native_client/src/untrusted/pnacl_support_extension/pnacl_support_extension.gyp

@@ -28,6 +28,8 @@
             'action_name': 'generate_pnacl_support_extension',
             'inputs': [
               'pnacl_component_crx_gen.py',
+              # A stamp file representing the contents of pnacl_translator.
+              '<(DEPTH)/native_client/toolchain/pnacl_translator/SOURCE_SHA1',
             ],
             'conditions': [
                 # On windows we need both ia32 and x64.