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This is a minor update that incorporates some of our local patches. It also
introduces lite support for proto3 language.

It also incorporates a patch that reduces amount of memory
used by proto messages, at a cost of increased binary size.

For mobile, the binary size grows by ~20 KB with significant memory usage reduction:

http://storage.googleapis.com/chromium-telemetry/html-results/results-2016-05-27_17-22-13

For desktop, the binary size grows by ~200 KB with similar reduction.

BUG=607751

Review-Url: https://codereview.chromium.org/1983203003
Cr-Commit-Position: refs/heads/master@{#397491}