Promote DoubleBraceInitialization to an error am: 8605f63a9c am: e677b3af97

Original change: https://android-review.googlesource.com/c/platform/external/error_prone/+/3233985

Change-Id: I44add4214f27f908b4aaa640089e6ebad3c7bf07
Signed-off-by: Automerger Merge Worker <[email protected]>