copy gs_utils.py from skia repo into common repo

DEPS

Index: DEPS
diff --git a/DEPS b/DEPS
new file mode 100644
index 0000000000000000000000000000000000000000..8ed5b833c65421d5a9254ef616a5c21cf651e7f6
--- /dev/null
+++ b/DEPS
@@ -0,0 +1,18 @@
+use_relative_paths = True
+
+# Dependencies on outside packages.

[epoger, 2014/07/10 17:27:40]

I'm not sure how we should handle these transitive dependencies for code within
the common repo.

We don't fetch DEPS of the common repo, so this won't work as-is.  Do we need to
mandate that any repo which uses common provides these dependencies?

Or maybe that's just too complicated, and any utility module that requires its
own dependencies should not live in the common repo?

+#
+deps = {
+  "third_party/externals/google-api-python-client" : "https://github.com/google/google-api-python-client.git@ecc64a0a2baa4a77f35dec83ad05c6c9ba2d2841",
+  "third_party/externals/httplib2" : "https://github.com/jcgregorio/httplib2.git@7d1b88a3cf34774242bf4c0578c09c0092bb05d8",
+  "third_party/externals/oauth2client" : "https://github.com/google/oauth2client.git@d02b317af0313dcf66755844f5421651af5eb356",
+  "third_party/externals/uritemplate-py" : "https://github.com/uri-templates/uritemplate-py.git@1e780a49412cdbb273e9421974cb91845c124f3f",
+}
+
+#hooks = [
+#  {
+#    # A change to a .gyp, .gypi, or to GYP itself should run the generator.
+#    "pattern": ".",
+#    "action": ["python", "trunk/gyp_skia"],
+#  },
+#]