tweaked and cleaned up
Call super.enteredView() in enterView override

It seemed to work without this, but this is a prescription coming from Polymer itself, so we'd better follow.
Merge pull request #795 from ussuri/fix-enteredView-in-splitter

Call super.enteredView() in enterView override
Do not format menu differently for small screens

This looks really weird, especially when Spark window is resized with the menu opened and it suddenly jumps to a different layout, which in addtion is currently broken. We're also not testing this in any way, even manually. If we need this in future, we'll revisit.
Merge pull request #796 from ussuri/dont-reformat-menu-for-mobile

Do not format menu differently for small screens
Restored spark_menu_separator files and stripped
Merge branch 'master' of https://github.com/dart-lang/spark into umop-polymer-menu_separator
Merge pull request #790 from umop/umop-polymer-menu_separator

Polymer menu separator
Merge pull request #791 from dart-lang/devoncarew_error_dialog

add an error dialog
focused ==> autofocus
Merge pull request #799 from dart-lang/devoncarew_dialogs

focused ==> autofocus
Fixed focus issues (explicitly setting focus on show of SparkPolymerDialog)
TESTING: Tracing out focus events, etc
Revert "TESTING: Tracing out focus events, etc"

This reverts commit b51d8d6f91645a34c6c581665afd32df4ea44371.
Merge remote-tracking branch 'origin/master' into git_push
Merge remote-tracking branch 'origin/master' into git_push
add chrome to webview
Merge branch 'master' into work2
Merge pull request #801 from dart-lang/keertip_webview

Add chrome to webview
bootjack safe way of skipping focus fix