Move class core/css/Pair to the oilpan heap.

I moved it entirely since it was not used in many places. This moves a couple of additional [Pass]RefPtr's of CSSPrimitiveValue's as well.

R=ager@chromium.org, erik.corry@gmail.com, haraken@chromium.org, tkent@chromium.org, vegorov@chromium.org, zerny@chromium.org
BUG=341815

Review URL: https://codereview.chromium.org/159933012

git-svn-id: svn://svn.chromium.org/blink/trunk@167196 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: Remove the extensions->elements dependency

R=eustas, pfeldman
NOTRY=true

Review URL: https://codereview.chromium.org/164193006

git-svn-id: svn://svn.chromium.org/blink/trunk@167197 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: unskip couple of inspector tests on Linux

This patch brings back couple of inspector tests on Linux as they seem
to be working.

BUG=
TBR=pfeldman,vsevik

Review URL: https://codereview.chromium.org/166733002

git-svn-id: svn://svn.chromium.org/blink/trunk@167198 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: [JsDocValidator] Do not print Rhino stacktraces

This clutters the output considerably.

R=eustas, pfeldman, vsevik
NOTRY=true

Review URL: https://codereview.chromium.org/166483003

git-svn-id: svn://svn.chromium.org/blink/trunk@167199 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: Allow large retained sizes in heap snapshot.

Also removed orphan nodes tests since we actually do not
support snapshots with orphan nodes as dominator tree building
algorithm fails for these.

BUG=

Review URL: https://codereview.chromium.org/164083002

git-svn-id: svn://svn.chromium.org/blink/trunk@167200 bbb929c8-8fbe-4397-9dbb-9b2b20218538