Initial change to DEPS to add android_tools repo to third_party.

BUG=
TEST=


Review URL: https://chromiumcodereview.appspot.com/10824050

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@149049 0039d316-1c4b-4281-b951-d872f2087c98

DEPS

@@ -475,6 +475,10 @@ deps_os = {
 
     "src/third_party/aosp":
       "/trunk/deps/third_party/aosp@148330",
+
+    "src/third_party/android_tools":
+      Var("chromium_git") + "/android_tools.git" +
+      "@21f9993b4ce955f1af6a88e5dc1135ba645920a7",
   },
 }