[DevTools] Removed catch from promises in Runtime and Runtime._reportError
[DevTools] Removed catch from promises in Runtime and Runtime._reportError

Promise generates correct and full error report without catch with Runtime._reportError.

R=vsevik@chromium.org

Review URL: https://codereview.chromium.org/781973002

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@186602 bbb929c8-8fbe-4397-9dbb-9b2b20218538

primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs