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Mac gn component build fail because of missing frameworks and missing some other
dependencies, and occasionally file list out of sync with the gyp counterpart:
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_gn_dbg/builds/321/steps/compile/logs/stdio

For instance, the frameworks linked in the components that sync depends on is not
automatically linked into sync, thus revealing the issue.

Review URL: https://codereview.chromium.org/1087873003

Cr-Commit-Position: refs/heads/master@{#325479}