Include mapping files in data dependencies

Proguard mapping files are necessary for java_deobfuscate to be useful,
so make sure to list them as data dependencies.

Bug: 962540
Change-Id: Iecf24da4904943f4307679c993b213f1e556d823
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1609846
Commit-Queue: Andrew Grieve <agrieve@chromium.org>
Reviewed-by: Andrew Grieve <agrieve@chromium.org>
Auto-Submit: Sami Kyöstilä <skyostil@chromium.org>
Cr-Commit-Position: refs/heads/master@{#659476}

build/config/android/rules.gni

@@ -3136,6 +3136,9 @@ if (enable_java_templates) {
           data_deps = [
             "//build/android/stacktrace:java_deobfuscate",
           ]
+          data = [
+            "$_final_apk_path.mapping",
+          ]
         }
         args = [
           "--script-output-path",
@@ -4727,6 +4730,8 @@ if (enable_java_templates) {
           "--proguard-mapping-path",
           rebase_path(_sync_proguard_mapping_path, root_build_dir),
         ]
+        data_deps += [ "//build/android/stacktrace:java_deobfuscate" ]
+        data += [ _sync_proguard_mapping_path ]
       }
     }