Improve exception error messages for StorageAreaProxy and SharedWorker.

BUG=270033

Review URL: https://codereview.chromium.org/25064002

git-svn-id: svn://svn.chromium.org/blink/trunk@159569 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Add console message levels to test expectation output.

Rather than tagging every console message with "CONSOLE MESSAGE", this
patch adds the message level. "CONSOLE ERROR" and "CONSOLE WARNING", for
instance ("CONSOLE DEBUG" is less awesome, but whatever).

This requires touching practically every test expectation ever. Sorry. :(

R=jochen@chromium.org

Review URL: https://codereview.chromium.org/26770004

git-svn-id: svn://svn.chromium.org/blink/trunk@159570 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Configure V8 ResourceConstraints based on a device capabilities.

BUG=292928

Review URL: https://codereview.chromium.org/24550008

git-svn-id: svn://svn.chromium.org/blink/trunk@159571 bbb929c8-8fbe-4397-9dbb-9b2b20218538