Oilpan: improve ScriptPromiseProperty<>'s argument types.

The ScriptPromiseProperty<> template will instantiate three fields holding
references to objects. In order to ensure lifetime safety, supply better
transition types where it is used.

R=ager@chromium.org,haraken@chromium.org
BUG=

Review URL: https://codereview.chromium.org/393773004

git-svn-id: svn://svn.chromium.org/blink/trunk@178278 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Show console.timeStamp events on tracing based timeline

BUG=361045
R=alph@chromium.org

Review URL: https://codereview.chromium.org/392963003

git-svn-id: svn://svn.chromium.org/blink/trunk@178279 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Oilpan: Remove support for tracing off-heap LinkedHashSets.

R=haraken@chromium.org, oilpan-reviews@chromium.org, wibling@chromium.org
BUG=382557

Review URL: https://codereview.chromium.org/395173002

git-svn-id: svn://svn.chromium.org/blink/trunk@178280 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Make all drawable rectangles in Layer3DView general.

Review URL: https://codereview.chromium.org/391983004

Review URL: https://codereview.chromium.org/391983004

git-svn-id: svn://svn.chromium.org/blink/trunk@178281 bbb929c8-8fbe-4397-9dbb-9b2b20218538