[aw] Make java part of AwQuotaManagerBridge not a singleton.

Java AwQuotaManagerBridge is now owned by Java AwBrowserContext.

Bug: 963875
Change-Id: I517b1d17f17f6bda9ce93de09baa4861a74bc179
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1742171
Reviewed-by: Richard Coles <torne@chromium.org>
Commit-Queue: Anna Malova <amalova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#685395}
8 files changed