DevTools: Do not skip appending arguments in ScriptFunctionCall.

We should not skip appending arguments, as it may shift arguments order.
Instead append "undefined".

R=yurys

Review URL: https://codereview.chromium.org/412443002

git-svn-id: svn://svn.chromium.org/blink/trunk@178658 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Fix assert on unknown rule type in the BisonCSSParser::endRuleHeader.

Allow the @media rules' media query to be more tolerant on
malformed data. Move the at_rule_header_end after '{' token parsing to
avoid double match on the rule when the Bison's error token seeks for
a recovery point (thus avoiding the double call on the endRuleHeader).

BUG=377488
TEST=webkit_unit_tests --gtest_filter=BisonCSSParserTest.MediaQuery

Review URL: https://codereview.chromium.org/308733005

git-svn-id: svn://svn.chromium.org/blink/trunk@178659 bbb929c8-8fbe-4397-9dbb-9b2b20218538