Refactor AutofillPopupView and friends

Before:
AutofillPopupViewViews extends AutofillPopupView
AutofillExternalDelegateViews extends AutofillExternalDelegate, and owns AutofillPopupViewViews

After:
AutofillPopupController owns AutofillPopupViewViews which implements AutofillPopupView interface
AutofillExternalDelegate implements AutofillPopupDelegate, and creates / interacts with AutofillPopupController (no platform subclasses for AutofillExternalDelegate)
no dependency of AutofillPopupView and subclasses on content/

BUG=164966

Review URL: https://codereview.chromium.org/11446077

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@173084 0039d316-1c4b-4281-b951-d872f2087c98
40 files changed