Create a temporary dir for patch to do its work.

BUG=259665

Review URL: https://chromiumcodereview.appspot.com/18664004

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@211443 0039d316-1c4b-4281-b951-d872f2087c98
Print time of long running hook actions

We can use this to evaluate the usefulness of making hooks run in parallel.

Review URL: https://chromiumcodereview.appspot.com/18851005

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@211446 0039d316-1c4b-4281-b951-d872f2087c98
Partial revert of r211446

Broke parsing got_revision.

Review URL: https://codereview.chromium.org/19116003

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@211462 0039d316-1c4b-4281-b951-d872f2087c98
Get rid of place-holder for commit-msg hook.

This caused problems for repo-based projects that need to install the
standard Change-Id commit-msg hook.

With the commit-msg hook gone, we can also reinstate the --template
argument to 'git clone'.

BUG=235215
R=iannucci@chromium.org, ilevy@chromium.org, maruel@chromium.org

Review URL: https://codereview.chromium.org/18083033

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@211464 0039d316-1c4b-4281-b951-d872f2087c98
Fix GenerateDiff -- don't strip whitespace.

BUG=259434
R=iannucci

Review URL: https://chromiumcodereview.appspot.com/18408006

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@211483 0039d316-1c4b-4281-b951-d872f2087c98