Add depfile support to android build scripts

build/config/android/internal_rules.gni

 
 # Creates a zip archive of the inputs.
 # If base_dir is provided, the archive paths will be relative to it.
 template("zip") {
   assert(defined(invoker.inputs))
   assert(defined(invoker.output))
 
   rebase_inputs = rebase_path(invoker.inputs)
   rebase_output = rebase_path(invoker.output)
   action(target_name) {
     script = "//build/android/gn/zip.py"
+    depfile = "$target_gen_dir/$target_name.d"
     source_prereqs = invoker.inputs
-    outputs = [invoker.output]
+    outputs = [depfile, invoker.output]
     args = [
+      "--depfile", rebase_path(depfile, root_build_dir),
       "--inputs=$rebase_inputs",
       "--output=$rebase_output",
     ]
     if (defined(invoker.base_dir)) {
       args += [
         "--base-dir", rebase_path(invoker.base_dir)
       ]
     }
   }
 }