Service Worker: Tests for unregister then register

These are tests for the Chromium patch r288994:
https://codereview.chromium.org/413063004

Our current shortcomings are:
- New-scope registration overrides the existing registration. This is an
existing bug: https://code.google.com/p/chromium/issues/detail?id=398355
- register() should wait before resolving if docs are using an unregistered
registration. This is a new spec requirement.
- We don't do "early-rejection" described by
https://github.com/slightlyoff/ServiceWorker/issues/396. Also a new spec
requirement.

BUG=388095

Review URL: https://codereview.chromium.org/416003003

git-svn-id: svn://svn.chromium.org/blink/trunk@180141 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Add lextab.pyc as an output of the cached_lex_yacc_tables action

The primary output is lextab.py, but since it is imported, Python also
writes lextab.pyc. Listing it too as an output means it won't be left
around by "ninja -t clean" (and not much else, I think.)

Prior to the patch
  https://codereview.chromium.org/425953002/
the result of not having lextab.pyc listed as an output and running
"ninja -t clean" was a tree that would build correctly, but that would
always rerun all the IDL code generation scripts, and thus never become
"clean".

BUG=397909

Review URL: https://codereview.chromium.org/463063003

git-svn-id: svn://svn.chromium.org/blink/trunk@180142 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Range.deleteContents shouldn't throw HierarchyRequestError on doctype

SPEC: http://dom.spec.whatwg.org/#dom-range-deletecontents

Unlike extractContents, deleteContents doesn't throw error.
So this CL modified implementation as per specified.

Behavior in other browsers.
*)FF: PASS
*)IE: PASS

In addition 4 failed cases will be passed with this CL in
http://w3c-test.org/dom/ranges/Range-deleteContents.html

TEST=LayoutTests/fast/dom/Range/deleteContents-doctype.html

Review URL: https://codereview.chromium.org/451403002

git-svn-id: svn://svn.chromium.org/blink/trunk@180143 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: NetworkPanel: remove unused CSS.

BUG=316092
NOTRY=true

Review URL: https://codereview.chromium.org/461383002

git-svn-id: svn://svn.chromium.org/blink/trunk@180144 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: NetworkPanel: remove noop CSS.

BUG=316092
NOTRY=true

Review URL: https://codereview.chromium.org/464813002

git-svn-id: svn://svn.chromium.org/blink/trunk@180145 bbb929c8-8fbe-4397-9dbb-9b2b20218538