Fix emma_coverage=true GN gen failure

Was getting a few: ERROR Input to target not generated by a dependency.

Bug: 843307
Change-Id: I58ad10e74842b6f1df9e53cc5b592d6169cc8553
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1591947
Auto-Submit: Andrew Grieve <agrieve@chromium.org>
Commit-Queue: Eric Stevenson <estevenson@chromium.org>
Reviewed-by: Eric Stevenson <estevenson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#656488}

build/config/android/internal_rules.gni

@@ -3654,11 +3654,7 @@ if (enable_java_templates) {
             java_sources_file = _java_sources_file
           }
           output_jar_path = _final_jar_path
-          if (_has_sources) {
-            deps = _accumulated_public_deps  # compile & build_config
-          } else {
-            deps = _accumulated_deps + _accumulated_public_deps
-          }
+          deps = _accumulated_deps + _accumulated_public_deps
         }
         _accumulated_public_deps += [ ":$_process_prebuilt_target_name" ]