Devtools: Fix UI glitches in the console
Devtools: Fix UI glitches in the console

1. Remove separator between command and its result in the console
2. Remove jump on the object expansion

BUG=475459

Review URL: https://codereview.chromium.org/1067393002

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@193440 bbb929c8-8fbe-4397-9dbb-9b2b20218538

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