fix a help page CSS transition

It now matches the timing and timing function of the advanced options section in settings.

BUG=none

Review URL: https://codereview.chromium.org/99873002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@238356 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 238356
drive: Retry update when the entry was trashed during update

BUG=260538
TEST=unit_tests

Review URL: https://codereview.chromium.org/99893007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@238357 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 238357
Escape selectors before evaluating them

R=tonyg
CC=eseidel

Review URL: https://codereview.chromium.org/100283003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@238358 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 238358
Fix screen capture slowness in Chrome OS feedback report.

The webkitGetUserMedia maxWidth/maxHeight parameters only define the maximum
frame sizes. The actual capture resolution should not exceed that or the
actual desktop resolution. In other words it should only downscale the desktop
but not upscale it.

BUG=324923
TEST=trybot, Chrome OS feedback screen captures in native resolution

Review URL: https://codereview.chromium.org/100313002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@238359 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 238359