feat(platform): Make angular invoke web_component polyfills for browsers without native web_component implementations.
perf(NodeCursor): Do not duplicate child nodes
perf(selector): Remove an useless check
perf(tagging_view_factory): Move a test out of the loop
style: code cleanup
perf(_ElementSelector): Remove recursion in addDirective
docs(formatter): Fix a few typos
chore(travis): Fix Travis fetch for Dartium to handle redirects
chore(travis): Fix bad linebreak in previous commit
chore(BuildProcess): refactor presubmit flow

When a branch of the form branch1-q-branch2 is created the following
happens:
  1. branch1 is rebased onto branch2
  2. tests are run
  3. code is pushed to upstream/branch2