Add the files created with "svn copy" first.

These files are part of the CL at
https://codereview.chromium.org/189893002/

TBR=rtenneti@chromium.org
BUG=none
TEST=net_unittests

Review URL: https://codereview.chromium.org/196743005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@256650 0039d316-1c4b-4281-b951-d872f2087c98
Fix a use_allocator condition in content/content_shell.gypi.

BUG=345554
TBR=brettw@chromium.org

Review URL: https://codereview.chromium.org/197833002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@256651 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 256651
Fix DEATH_BY_SIGNAL test helper

Review URL: https://codereview.chromium.org/193453002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@256653 0039d316-1c4b-4281-b951-d872f2087c98
Add support for new calls in cryptohome.

Related changes on chromeos side:

https://chromium-review.googlesource.com/#/c/186561/
https://chromium-review.googlesource.com/#/c/188490/

New methods added: MountEx, CheckKeyEx, AddKeyEx, UpdateKeyEx (extended versions of Mount, CheckKey, AddKey calls).

This is done to achieve several goals. One is to unify most of cryptohome calls by using protobuffers. 
Using protobuffers also makes most of the code resilient to implementation changes.
These methods also introduce key annotations (labels), that are used to specify keys for operations on valuts with multiple keys, as well as introduce per-key privileges.

NOTRY=true
as it is chromeos only and just adds new code, not alters existing.
BUG=244472

Review URL: https://codereview.chromium.org/186663002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@256654 0039d316-1c4b-4281-b951-d872f2087c98
Fix a situation where tab creation can throw an exception and we never navigate to about:blank.

BUG=349447
TEST=manual
NOTRY=True

Review URL: https://codereview.chromium.org/197103004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@256655 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 256655