DevTools: remove unused spinner.gif

This patch removes obsolete spinner.gif and saves us 1.5kb

BUG=

Review URL: https://codereview.chromium.org/163853003

git-svn-id: svn://svn.chromium.org/blink/trunk@167108 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Layout viewport constrained elements on frame rect resize

Previously if layoutSize doesn't change during WebWidget::resize(),
fixed-pos elements won't be relayouted, causing incorrect position
of them after visible viewport change.

Call setViewportConstrainedObjectsNeedsLayout() in
FrameView::setFrameRect().

BUG=338569
TEST=WebFrameTest.fixedPosElementInFixedViewport
TBR=aelias (Source/web/tests)

Review URL: https://codereview.chromium.org/139283011

git-svn-id: svn://svn.chromium.org/blink/trunk@167109 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Remove insertUserStyleSheet function and enum UserStyleSheet.

A UserStyleLevel parameter is no longer used in insertUserStyleSheet()
and insertUserStyleSheet() calls just insertStyleSheet() again.

chromium side: https://codereview.chromium.org/154113008

Review URL: https://codereview.chromium.org/143203006

git-svn-id: svn://svn.chromium.org/blink/trunk@167110 bbb929c8-8fbe-4397-9dbb-9b2b20218538
The submit method should have ForIsolatedWorlds directive
rather than SetterForIsolatedWorlds as it is a method not
a property.

Review URL: https://codereview.chromium.org/160893002

git-svn-id: svn://svn.chromium.org/blink/trunk@167111 bbb929c8-8fbe-4397-9dbb-9b2b20218538