TimelinePanel: fix for search box position.

When user hits Ctrl-f the search box should appear at the bottom of the rows list.
it was regressed when I put _recordsView into _stackView because SearchableView requires "flex: auto" attribute on the child.

BUG=326121
R=vsevik@chromium.org

Review URL: https://codereview.chromium.org/130413003

git-svn-id: svn://svn.chromium.org/blink/trunk@165408 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Enable JS compilation for temp_storage_shared_worker and heap_snapshot_worker

BUG=None
R=apavlov@chromium.org, pfeldman@chromium.org

Review URL: https://codereview.chromium.org/137103007

git-svn-id: svn://svn.chromium.org/blink/trunk@165409 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Update more modules/ classes to use OVERRIDE / FINAL when needed

Update more modules/ classes to use OVERRIDE / FINAL when needed. Those are
useful for error checking or performance when the compiler supports it.

These were found using the chromium style clang plugin.

R=eseidel, abarth
BUG=333316

Review URL: https://codereview.chromium.org/137923002

git-svn-id: svn://svn.chromium.org/blink/trunk@165410 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Rename currentWorldContext to currentWorldContextOrMainWorldContext

Because that's what it does

BUG=none
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/143393002

git-svn-id: svn://svn.chromium.org/blink/trunk@165411 bbb929c8-8fbe-4397-9dbb-9b2b20218538