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This is necessary as request_read/write_cb in android have become
request_read/write_characteristic/descriptor_cb

BUG: b:73743210
TEST: ./out/Default/unit_tests --gtest_filter="ArcBluetoothBridgeTest.*"
      Also push this to my device, working fine

Change-Id: Ib850fceae979c29746affd5591cbac7264de77d2
Reviewed-on: https://chromium-review.googlesource.com/998797Reviewed-by: Luis Hector Chavez <lhchavez@chromium.org>
Reviewed-by: Greg Kerr <kerrnel@chromium.org>
Commit-Queue: Qiyu Hu <qiyuh@google.com>
Cr-Commit-Position: refs/heads/master@{#548801}