Fix a dependency issue w/ gn refs for android apks.

One of the intermediate steps in the build process for
creating Android APKs depends on the output from another
intermediate step, but that dependency was not *also* declared
in the 'deps' target in the GN build file.

As a result, 'gn refs' (and hence 'mb analyze') would not calculate
the right set of dependencies and we would incorrectly conclude that
no compiles were necessary in cases where they really were needed.

More details in the bug.

R=cjhopman@chromium.org, brettw@chromium.org
BUG=487897

Review URL: https://codereview.chromium.org/1129773004

Cr-Commit-Position: refs/heads/master@{#330152}

build/config/android/internal_rules.gni

@@ -616,6 +616,7 @@ template("create_apk") {
   group(target_name) {
     deps = [
       ":${target_name}__finalize",
+      ":${target_name}__package_resources",
     ]
   }
 }