Fix the build dependency of ProfileSyncService on sync.pb.h

Fix the build dependency of ProfileSyncService on sync.pb.h

ProfileSyncService requires the file sync/protocol/sync.pb.h to be generated.
However, including browser_sync_browser (which contains ProfileSyncService)
does not guarantee that.

This CL exposes sync/sync.gyp:sync (containing sync.pb.h) as a public
dependency in sync_driver, and sync_driver as a public dependency in
browser_sync_browser, so that any target with the dependency on
browser_sync_browser will also generate sync.pb.h.

BUG=595332
Committed: https://crrev.com/37f7b75bf619d4f853cfb2b7e4e17d1b290d9a9f
Cr-Commit-Position: refs/heads/master@{#381712}

[msramek, 2016-03-17 13:59:27]

msramek@chromium.org changed reviewers:
+ blundell@chromium.org, sdefresne@chromium.org

[msramek, 2016-03-17 13:59:28]

This is the dependency chain fix from
https://codereview.chromium.org/1806873002/, extracted into a separate base CL.
PTAL!

Thanks,
Martin

[blundell, 2016-03-17 15:01:24]

lgtm

[sdefresne, 2016-03-17 15:10:52]

The CQ bit was checked by sdefresne@chromium.org

[sdefresne, 2016-03-17 15:10:53]

lgtm

[commit-bot: I haz the power, 2016-03-17 15:11:13]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1808223002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1808223002/1

[commit-bot: I haz the power, 2016-03-17 15:16:05]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-03-17 15:18:16]

Description was changed from

==========
Fix the build dependency of ProfileSyncService on sync.pb.h

ProfileSyncService requires the file sync/protocol/sync.pb.h to be generated.
However, including browser_sync_browser (which contains ProfileSyncService)
does not guarantee that.

This CL exposes sync/sync.gyp:sync (containing sync.pb.h) as a public
dependency in sync_driver, and sync_driver as a public dependency in
browser_sync_browser, so that any target with the dependency on
browser_sync_browser will also generate sync.pb.h.

BUG=595332
==========

to

==========
Fix the build dependency of ProfileSyncService on sync.pb.h

ProfileSyncService requires the file sync/protocol/sync.pb.h to be generated.
However, including browser_sync_browser (which contains ProfileSyncService)
does not guarantee that.

This CL exposes sync/sync.gyp:sync (containing sync.pb.h) as a public
dependency in sync_driver, and sync_driver as a public dependency in
browser_sync_browser, so that any target with the dependency on
browser_sync_browser will also generate sync.pb.h.

BUG=595332

Committed: https://crrev.com/37f7b75bf619d4f853cfb2b7e4e17d1b290d9a9f
Cr-Commit-Position: refs/heads/master@{#381712}
==========

[commit-bot: I haz the power, 2016-03-17 15:18:17]

Patchset 1 (id:??) landed as
https://crrev.com/37f7b75bf619d4f853cfb2b7e4e17d1b290d9a9f
Cr-Commit-Position: refs/heads/master@{#381712}