Add 'java_api_finder' to Android.bp

Per the Mainline requirement to setup coverage for APIs used by
modules, we need to add the plugin 'java_api_finder' to ANGLE's
Android.bp to enable the instrumentation.

Bug: b:148987998
Test: Generate Android.bp, verify GoogleANGLE can build in goog/master
Change-Id: Id3d82f18ecb9ff6a57cda4a60f14cd2464dff234
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2145236
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Tim Van Patten <timvp@google.com>

scripts/generate_android_bp.py

@@ -447,6 +447,7 @@ def main():
                 '--extra-packages com.android.angle.common',
             ],
             'srcs': [':ANGLE_srcs'],
+            'plugins': ['java_api_finder',],
             'privileged':
                 True,
             'owner':
@@ -490,7 +491,7 @@ def main():
     for (blueprint_type, blueprint_data) in blueprint_targets:
         write_blueprint(output, blueprint_type, blueprint_data)
 
-    print '\n'.join(output)
+    print('\n'.join(output))
 
 
 if __name__ == '__main__':