guard against NPE in new editor model

BUG=
R=scheglov@google.com

Review URL: https://codereview.chromium.org//698613003

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@41441 260f80e4-7a28-3924-810f-c04153c831b5
move import combinator suggestions into a separate computer

BUG=
R=scheglov@google.com

Review URL: https://codereview.chromium.org//695773003

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@41442 260f80e4-7a28-3924-810f-c04153c831b5
Clean up logging uses

R=scheglov@google.com

Review URL: https://codereview.chromium.org//685993004

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@41443 260f80e4-7a28-3924-810f-c04153c831b5
Defensively create the new project directory in the new project wizard.

R=scheglov@google.com

Review URL: https://codereview.chromium.org//694943002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@41444 260f80e4-7a28-3924-810f-c04153c831b5
Support for 'Add Type Annotation' when selection if right after ';'.

R=brianwilkerson@google.com, danrubel@google.com
BUG=

Review URL: https://codereview.chromium.org//693193002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@41445 260f80e4-7a28-3924-810f-c04153c831b5
Fix for 'Replace if-else with conditional expression' in case of mixed expression/return branches.

R=brianwilkerson@google.com
BUG=

Review URL: https://codereview.chromium.org//690353002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@41446 260f80e4-7a28-3924-810f-c04153c831b5