[DevTools] Report error from loadScripts promise

R=vsevik@chromium.org

Review URL: https://codereview.chromium.org/683953002

git-svn-id: svn://svn.chromium.org/blink/trunk@184635 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: NetworkPanel: improve XHR resource type detection.

1) Make decision on the base of initiatorInfo, because Resource::Raw type is too ambiguous.
2) Preserve discovered XHR resource type for the whole request lifecycle.

BUG=234025

Review URL: https://codereview.chromium.org/671423002

git-svn-id: svn://svn.chromium.org/blink/trunk@184636 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: defer loading extensions to after the core logic is loaded.

Review URL: https://codereview.chromium.org/690723003

git-svn-id: svn://svn.chromium.org/blink/trunk@184639 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: [timeline] gray dots everywhere

BUG=428440

Review URL: https://codereview.chromium.org/689893002

git-svn-id: svn://svn.chromium.org/blink/trunk@184641 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: Fix compilation, remove second parameter in parseFloat
R=pfeldman
NOTRY=true

BUG=

Review URL: https://codereview.chromium.org/686423002

git-svn-id: svn://svn.chromium.org/blink/trunk@184643 bbb929c8-8fbe-4397-9dbb-9b2b20218538