Implement automatic load of composed/embedded automation trees

content/public/browser/browser_accessibility_state.h

Index: content/public/browser/browser_accessibility_state.h
diff --git a/content/public/browser/browser_accessibility_state.h b/content/public/browser/browser_accessibility_state.h
index 6c91e1b7b7699734675ebe734dba84c711e96fea..d1972428edc22be20717615482490f194ab7c931 100644
--- a/content/public/browser/browser_accessibility_state.h
+++ b/content/public/browser/browser_accessibility_state.h
@@ -33,6 +33,12 @@ class CONTENT_EXPORT BrowserAccessibilityState {
   // passed, or EditableTextOnly if this is Win7.
   virtual void ResetAccessibilityMode() = 0;
 
+  // Enables automation for all running tabs.
+  virtual void EnableAutomation() = 0;
+
+  // Disables automation for all running tabs. (Only if accessibility is not

[dmazzoni, 2014/10/29 06:53:30]

nit: finish comment

+  virtual void DisableAutomation() = 0;
+
   // Called when screen reader client is detected.
   virtual void OnScreenReaderDetected() = 0;