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We used to use GetCachePath as a means to control the parameters of the
code caching. To disable code caching embedder returned an empty path.
Now, we replaced this with a better interface with
GeneratedCodeCacheSettings [cl]. We no longer need GetCachePath interface
for BrowserContext

[cl]: https://chromium-review.googlesource.com/c/chromium/src/+/1213093

BUG: chromium:867552
Change-Id: Ifc7993548fa73d8713b935a7cb8cc5876ff3d431
Reviewed-on: https://chromium-review.googlesource.com/c/1301973
Commit-Queue: Mythri Alle <mythria@chromium.org>
Reviewed-by: Alex Sakhartchouk <alexst@chromium.org>
Reviewed-by: Bo <boliu@chromium.org>
Reviewed-by: Kinuko Yasuda <kinuko@chromium.org>
Reviewed-by: Marc Treib <treib@chromium.org>
Reviewed-by: Mihai Sardarescu <msarda@chromium.org>
Reviewed-by: Eric Seckler <eseckler@chromium.org>
Reviewed-by: Ken Rockot <rockot@google.com>
Reviewed-by: Wez <wez@chromium.org>
Cr-Commit-Position: refs/heads/master@{#607214}