Fire accessibility focus/blur events on root web document.

content/browser/accessibility/browser_accessibility_manager.cc

Index: content/browser/accessibility/browser_accessibility_manager.cc
diff --git a/content/browser/accessibility/browser_accessibility_manager.cc b/content/browser/accessibility/browser_accessibility_manager.cc
index 8481b0776c42c9ee6df90e205de097b0e3a6db35..26b005c04e81f281ce5915470505e0861014b656 100644
--- a/content/browser/accessibility/browser_accessibility_manager.cc
+++ b/content/browser/accessibility/browser_accessibility_manager.cc
@@ -86,18 +86,14 @@ BrowserAccessibility* BrowserAccessibilityManager::GetFromRendererID(
   return NULL;
 }
 
-void BrowserAccessibilityManager::GotFocus(bool touch_event_context) {

[David Tseng, 2014/04/02 22:05:05]

Was this unused?

[dmazzoni, 2014/04/02 22:09:55]

This used to be called from render_widget_host_view_win.cc, which doesn't exist
anymore.

The touch_event_context flag was from old Win 8 touch support logic, currently
unused.

-  if (!touch_event_context)
-    osk_state_ = OSK_DISALLOWED_BECAUSE_TAB_JUST_APPEARED;
-
-  if (!focus_)
-    return;
-
-  NotifyAccessibilityEvent(ui::AX_EVENT_FOCUS, focus_);
+void BrowserAccessibilityManager::OnWindowFocused() {
+  if (focus_)
+    NotifyAccessibilityEvent(ui::AX_EVENT_FOCUS, focus_);
 }
 
-void BrowserAccessibilityManager::WasHidden() {
-  osk_state_ = OSK_DISALLOWED_BECAUSE_TAB_HIDDEN;
+void BrowserAccessibilityManager::OnWindowBlurred() {
+  if (focus_)

[David Tseng, 2014/04/02 22:05:05]

|focus_| could be anything in the accessibility tree; name of this method leads
one to believe it should be fired on the "window" (root of accessibility tree).
This goes for OnWindowFocused as well.

Also, is this behavior we want for all platforms? I know it's not used by any
other platforms at the moment.

[dmazzoni, 2014/04/02 22:09:55]

The way I implemented it, all platforms will fire a focus event on the actual
element that has focus - I believe that's correct everywhere. Only on Windows do
we extend it to also fire a focus event on the root of the tree first.

+    NotifyAccessibilityEvent(ui::AX_EVENT_BLUR, focus_);
 }
 
 void BrowserAccessibilityManager::GotMouseDown() {