Make all methods on WebLayerTreeView optional.

This should make creating a subclass in a test easier, and hopefully
combined with FrameTestHelpers::WebViewHelper and some cleverness will
allow writing FOUC tests.

BUG=521692

Review URL: https://codereview.chromium.org/1287403005

git-svn-id: svn://svn.chromium.org/blink/trunk@200865 bbb929c8-8fbe-4397-9dbb-9b2b20218538
2 files changed
tree: 7e5efc714720eb693b6a391b45d2879a67c7e46c
  1. third_party/