Gardening: Disable 4 tests for Debug builds until a fix on V8 side.

inspector/sources/debugger/async-callstack-promises.html
inspector/sources/debugger/async-callstack-scopes.html
inspector/sources/debugger/async-callstack.html
inspector/sources/debugger/debug-console-command.html

BUG=352035
TBR= aandrey@chromium.org, arv@chromium.org, tommyw@chromium.org

Review URL: https://codereview.chromium.org/195943008

git-svn-id: svn://svn.chromium.org/blink/trunk@169090 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Timeline frame view: account main thread scroll time into pre-frame work

This adds another record type, ScrollLayer, to the list of those thar cause
main thread tasks to get accounted to subsequent frame.

R=alph@chromium.org

Review URL: https://codereview.chromium.org/171603016

git-svn-id: svn://svn.chromium.org/blink/trunk@169091 bbb929c8-8fbe-4397-9dbb-9b2b20218538
TimelineGrid: move itemsGraphElement from TimelineGrid to TimelineView where it is actually using.

BUG=
R=pfeldman@chromium.org

Review URL: https://codereview.chromium.org/194713002

git-svn-id: svn://svn.chromium.org/blink/trunk@169092 bbb929c8-8fbe-4397-9dbb-9b2b20218538
[WebSocket] Remove unused method in wrapper class

ThreadableWebSocketChannelClientWrapper::processPendingTasksCallback is
no longer used. Remove it.

BUG=none

Review URL: https://codereview.chromium.org/195873003

git-svn-id: svn://svn.chromium.org/blink/trunk@169093 bbb929c8-8fbe-4397-9dbb-9b2b20218538