[automerger skipped] Initialize volume as 0 for volume control effect. am: b0b34366 -s ours

am skip reason: Merged-In I24eb3c7f21dee8dd4bf9337010b05c09f8f00873 with SHA-1 8b627faf is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/27121509



Change-Id: I2a0b5124fb374a616b0108ada77d1783ffc93b85
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>