Exclude v8/ from bindings/PRESUBMIT.py

Currently run-bindings-tests runs for all changes to bindings/
even though changes to v8/ do not changes generated bindings or tests.
This blacklists v8/ from the presubmit tests, which speeds up submit
for v8/ bindings hacking.
(This is particularly in response to Marja's wanting to reduce r-b-t runs
to only necessary.)

See original CL for the script:
Add presubmit check for run-bindings-tests
https://chromiumcodereview.appspot.com/21722003

TBR=haraken

Review URL: https://codereview.chromium.org/218613003

git-svn-id: svn://svn.chromium.org/blink/trunk@170431 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Remove obsolete 1-arg WebServiceWorkerContextClient::didHandleInstallEvent

This concludes the three-sided patch started in Blink r260356.
The two-arg function is already overridden by Chromium and the one-arg
function is obsolete.

BUG=285976

Review URL: https://codereview.chromium.org/216163003

git-svn-id: svn://svn.chromium.org/blink/trunk@170432 bbb929c8-8fbe-4397-9dbb-9b2b20218538