GitLab

Modify AccessibilityTreeFormatter to build up an internal representation of the tree in the form of DictionaryValue et al. This may be used at a later stage to create a JSON representation of the tree.

Also modify the Mac platform implementation to use the NSAccessibility attribute names rather than method names.

BUG=

Review URL: https://chromiumcodereview.appspot.com/13479003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@194775 0039d316-1c4b-4281-b951-d872f2087c98