drive: Show files shared to me from other account's shared folder.

See the associated BUG for the detailed reproducing steps. This CL is to
stop handling such shared files as errors and starts storing them in
local metadata.

BUG=326043

Review URL: https://codereview.chromium.org/119823002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@242087 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 242087
Add libc++ and libc++abi to third-party.

BUG=318770, 313751
R=glider@chromium.org,thakis@chromium.org,bradnelson@chromium.org,darin@chromium.org,phajdan@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=240682

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=241574

Review URL: https://codereview.chromium.org/75213003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@242088 0039d316-1c4b-4281-b951-d872f2087c98
Update .DEPS.git

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@242089 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 242089