Move RTCStatsResponseBase to platform/

BUG=297477

Review URL: https://codereview.chromium.org/60663002

git-svn-id: svn://svn.chromium.org/blink/trunk@161537 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: Fix exception in Show Function Definition context menu for built-in functions.

We cannot jump to a native function's code - just ignore this case.
Also: refactor to match the behavior to the WebInspector.inspect().

BUG=314463
R=vsevik,pfeldman

Review URL: https://codereview.chromium.org/60163003

git-svn-id: svn://svn.chromium.org/blink/trunk@161538 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Remove deprecated method Notification::detachPresenter()

In Chromium, the only implementation of WebNotificationPresenter,
content::NotificationProvider never goes away. Rather than implementing it or
leaving it empty, just remove it.

BUG=none

Review URL: https://codereview.chromium.org/36823002

git-svn-id: svn://svn.chromium.org/blink/trunk@161539 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Remove LayerPainterChromium

Unused in Blink

BUG=297477

Review URL: https://codereview.chromium.org/59133005

git-svn-id: svn://svn.chromium.org/blink/trunk@161540 bbb929c8-8fbe-4397-9dbb-9b2b20218538
The one in Node is used and does the same anyway. This is probably old legacy code from KDOM days.

Review URL: https://codereview.chromium.org/64543003

git-svn-id: svn://svn.chromium.org/blink/trunk@161541 bbb929c8-8fbe-4397-9dbb-9b2b20218538