Renaming didNavigate to continueProgram

There was a TODO to rename didNavigate() to continueProgram upstream. 
As the changes were on both chrome and blink side hence uploading separate patches for the same. 

This patch deals with blink side change.

Link to chromium patch : https://codereview.chromium.org/330663002/

Review URL: https://codereview.chromium.org/330603003

git-svn-id: svn://svn.chromium.org/blink/trunk@176727 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Revert "Revert 170343 "Send AXLayoutComplete even when document hasn't f...""

Un-reverting this change that was temporarily reverted for a branch merge.

BUG=353067
NOTRY=true
TBR=dmazzoni

Review URL: https://codereview.chromium.org/353453002

git-svn-id: svn://svn.chromium.org/blink/trunk@176728 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Revert 176723 "Revert 172948 "Don't send accessibility notificat..."

Un-reverting this change that was temporarily reverted for a branch merge.

> Revert 172948 "Don't send accessibility notifications for a doc ..."
> 
> Temporarily reverting so that we can merge the revert to M36. Will un-revert
> on trunk.
> 
> > Don't send accessibility notifications for a doc with an empty/blank url.
> > 
> > This is a refinement to the change that started sending
> > accessibility notifications early. This also addresses
> > the test for this change that was flaky.
> > 
> > BUG=353067,363235
> > NOTRY=true
> > 
> > Review URL: https://codereview.chromium.org/242103012
> 
> TBR=dmazzoni@chromium.org
> 
> Review URL: https://codereview.chromium.org/353443002

TBR=dmazzoni@google.com

Review URL: https://codereview.chromium.org/345403004

git-svn-id: svn://svn.chromium.org/blink/trunk@176729 bbb929c8-8fbe-4397-9dbb-9b2b20218538