Navigation transitions: Initiate transition navigations.
A is_transition_navigation flag now gets passed up from Blink (through decidePolicyForNavigation and OpenURL) to the navigator, which then calls didStartNavigationTransitionForFrame on the ContentViewCore of the embedder if it's set.
R=nasko,jam
BUG=370696
Review URL: https://codereview.chromium.org/358973005
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@286672 0039d316-1c4b-4281-b951-d872f2087c98
21 files changed
