DevTools: get rid of Element.prototype.removeMatchingStyleClasses

This method encourages className crafting and runs unexpectedly long.

BUG=316092
NOTRY=true

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=180163

Review URL: https://codereview.chromium.org/466703002

git-svn-id: svn://svn.chromium.org/blink/trunk@180172 bbb929c8-8fbe-4397-9dbb-9b2b20218538
[oilpan] Null pointers must be treated as live, since they can't be marked live by strongification

R=ager@chromium.org, haraken@chromium.org
BUG=402426
NOTRY=true

Review URL: https://codereview.chromium.org/464283002

git-svn-id: svn://svn.chromium.org/blink/trunk@180173 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: move TracingModel.js into the sdk module.

Review URL: https://codereview.chromium.org/470553002

git-svn-id: svn://svn.chromium.org/blink/trunk@180174 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: do not scroll console to bottom on resize

Currently console gets scrolled to bottom whenever it gets resized.
The patch fixes this erroneous behavior.

R=vsevik, pfeldman

Review URL: https://codereview.chromium.org/462083002

git-svn-id: svn://svn.chromium.org/blink/trunk@180175 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: remove unused CSS.

See: https://codereview.chromium.org/449893002

BUG=
TBR=vsevik@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/471553003

git-svn-id: svn://svn.chromium.org/blink/trunk@180176 bbb929c8-8fbe-4397-9dbb-9b2b20218538