Move WebSocketChannelClient and its friends to Oilpan's heap

BUG=340522

Review URL: https://codereview.chromium.org/306863002

git-svn-id: svn://svn.chromium.org/blink/trunk@176599 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: Extract a common string label to UIUtils.

R=vsevik@chromium.org, apavlov, vsevik

Review URL: https://codereview.chromium.org/342133003

git-svn-id: svn://svn.chromium.org/blink/trunk@176600 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Oilpan: Support ephemerons - really weak maps where the strong value does not keep the weak key alive.

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

Review URL: https://codereview.chromium.org/340773002

git-svn-id: svn://svn.chromium.org/blink/trunk@176601 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Oilpan: fix build by adding missing WillBeGarbageCollectedMixin.

TBR=haraken@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/342313002

git-svn-id: svn://svn.chromium.org/blink/trunk@176602 bbb929c8-8fbe-4397-9dbb-9b2b20218538