drive: Support authorizing third-party Drive apps for opening files.

drive: Support authorizing third-party Drive apps for opening files.

Along the way, replace the official key check in DriveAppRegistry::IsUninstallSupported
by the new devoted function. (In fact, the macro is available
only during google_apis/ hence the previous code was not working well...)


BUG=332332
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=245565

[kinaba, 2014-01-17 09:00:44]

PTAL. Note that it depends on https://codereview.chromium.org/131743018/.

This is yet another undocumented API, but what I want to do is to request
POST /drive/v2internal/files/{fileID}/authorize?appId={appID}
that is expected to return the File resource for fileID.

[hashimoto, 2014-01-17 09:50:13]

lgtm

[commit-bot: I haz the power, 2014-01-17 13:59:53]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/kinaba@chromium.org/140783006/130001

[commit-bot: I haz the power, 2014-01-17 14:44:31]

Retried try job too often on win_rel for step(s) app_list_unittests,
ash_unittests, aura_unittests, cacheinvalidation_unittests, cc_unittests,
check_deps, check_deps2git, chrome_elf_unittests, chromedriver_unittests,
components_unittests, compositor_unittests, content_browsertests,
content_unittests, crypto_unittests, events_unittests, google_apis_unittests,
gpu_unittests, installer_util_unittests, ipc_tests, jingle_unittests,
media_unittests, mini_installer_test, nacl_integration, ppapi_unittests,
printing_unittests, remoting_unittests, sql_unittests, sync_integration_tests,
sync_unit_tests, telemetry_unittests, views_unittests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=win_rel&nu...

[commit-bot: I haz the power, 2014-01-17 15:01:58]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/kinaba@chromium.org/140783006/130001

[commit-bot: I haz the power, 2014-01-17 18:33:32]

Change committed as 245565