Implement Android accessible hit testing using an IPC to the renderer process.

Only Blink can accurately determine what node is under the user's finger.
Implement this by sending a hit test request every time the user does
touch exploration, and returning a hover event on the appropriate accessible
node in response.

The test is meant to be a good sanity test and a skeleton, it tests that
the hit test request returns a hover event in response, and I intend to
follow this up with more specific tests of behavior as we tweak the
algorithm.

BUG=357371

Review URL: https://codereview.chromium.org/290633002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@272193 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 2 insertions, 2 deletions

diff --git a/content/browser/renderer_host/render_view_host_impl.cc b/content/browser/renderer_host/render_view_host_impl.cc
index 7d1d567..0a95825 100644
--- a/content/browser/renderer_host/render_view_host_impl.cc
+++ b/content/browser/renderer_host/render_view_host_impl.cc
@@ -1464,7 +1464,7 @@ void RenderViewHostImpl::DisownOpener() {
 }
 
 void RenderViewHostImpl::SetAccessibilityCallbackForTesting(
-    const base::Callback<void(ui::AXEvent)>& callback) {
+    const base::Callback<void(ui::AXEvent, int)>& callback) {
   accessibility_testing_callback_ = callback;
 }
 
@@ -1575,7 +1575,7 @@ void RenderViewHostImpl::OnAccessibilityEvents(
       ax_tree_.reset(new ui::AXTree(param.update));
     else
       CHECK(ax_tree_->Unserialize(param.update)) << ax_tree_->error();
-    accessibility_testing_callback_.Run(param.event_type);
+    accessibility_testing_callback_.Run(param.event_type, param.id);
   }
 }