[CSS Shapes] CSS parser accepts trailing position arguments

Do not accept the basic shape if there are any trailing arguments in the function list.

BUG=350565

Review URL: https://codereview.chromium.org/191553003

git-svn-id: svn://svn.chromium.org/blink/trunk@168933 bbb929c8-8fbe-4397-9dbb-9b2b20218538
TimelineGrid: REGRESSION: dividers should have round numbers.

BUG=

Review URL: https://codereview.chromium.org/194653003

git-svn-id: svn://svn.chromium.org/blink/trunk@168934 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: Allow PieChart of arbitrary size

Implement pie chart with SVG.
Increase pie chart size in heap snapshot view.
Drive-by: slices are now antialiased.

Review URL: https://codereview.chromium.org/194983002

git-svn-id: svn://svn.chromium.org/blink/trunk@168936 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Convert blink presubmit to use new multiple-tryserver-compatible protocol

BUG=334892
R=dpranke@chromium.org, jamesr@chromium.org

Review URL: https://codereview.chromium.org/195383003

git-svn-id: svn://svn.chromium.org/blink/trunk@168937 bbb929c8-8fbe-4397-9dbb-9b2b20218538