[build] Make Android builds depend on catapult for using the test runner.

Costs ~600MB, but only if target_os is android - and the
android_tools already require ~7.4GB.

BUG=chromium:654353
NOTRY=true

Review-Url: https://codereview.chromium.org/2408633002
Cr-Commit-Position: refs/heads/master@{#40115}

DEPS

@@ -48,6 +48,8 @@ deps_os = {
   "android": {
     "v8/third_party/android_tools":
       Var("chromium_url") + "/android_tools.git" + "@" + "25d57ead05d3dfef26e9c19b13ed10b0a69829cf",
+    "v8/third_party/catapult":
+      Var('chromium_url') + "/external/github.com/catapult-project/catapult.git" + "@" + "c47d2e1b09e8edc8e1705073b337770f75d1d247",
   },
   "win": {
     "v8/third_party/cygwin":