Android: Fewer deps for prebuilts' resources

AAR prebuilts need their resources extracted, but the resulting resource
target should not need to depend on any of the aar's other deps.

Bug: 1154302
Change-Id: I214fc0089a26497babb9a5f6885bf658e5ddca3f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2570096
Commit-Queue: Peter Wen <wnwen@chromium.org>
Auto-Submit: Peter Wen <wnwen@chromium.org>
Reviewed-by: Andrew Grieve <agrieve@chromium.org>
Cr-Commit-Position: refs/heads/master@{#833345}

build/config/android/rules.gni

@@ -4282,15 +4282,11 @@ if (enable_java_templates) {
                                [
                                  "custom_package",
                                  "create_srcjar",
-                                 "deps",
                                  "resource_overlay",
                                  "testonly",
                                  "strip_drawables",
                                ])
-        if (!defined(deps)) {
-          deps = []
-        }
-        deps += [ ":$_unpack_target_name" ]
+        deps = [ ":$_unpack_target_name" ]
         if (_should_process_manifest) {
           android_manifest_dep = ":$_unpack_target_name"
           android_manifest = "${_output_path}/AndroidManifest.xml"