mojo: Update gyp python targets to specify their equivalent gn targets.

mojo/python/BUILD.gn

Index: mojo/python/BUILD.gn
diff --git a/mojo/python/BUILD.gn b/mojo/python/BUILD.gn
index eb349e7d7cb359bfb3083e4d868c15ab11f83dc6..026fa41d0e6ed574d38fe970a96c518663b3637a 100644
--- a/mojo/python/BUILD.gn
+++ b/mojo/python/BUILD.gn
@@ -6,6 +6,7 @@ import("//third_party/cython/rules.gni")
 
 group("python") {
   deps = [
+    "//mojo/public/python",

[jamesr, 2014/09/15 17:18:05]

order should be local targets first (sorted, then targets from other files
(sorted). https://code.google.com/p/chromium/wiki/GNStyleGuide (near the end)

[qsr, 2014/09/16 08:46:05]

Done.

     ":embedder",
   ]
 }