Include a role description string in node info for Android accessibility.

content/browser/accessibility/browser_accessibility_android.h

Index: content/browser/accessibility/browser_accessibility_android.h
diff --git a/content/browser/accessibility/browser_accessibility_android.h b/content/browser/accessibility/browser_accessibility_android.h
index 66055538087f13270e8c9a9548541837757f474b..e5c60d77d7876d6737d828b9dbb6baa4d2a74215 100644
--- a/content/browser/accessibility/browser_accessibility_android.h
+++ b/content/browser/accessibility/browser_accessibility_android.h
@@ -52,6 +52,8 @@ class CONTENT_EXPORT BrowserAccessibilityAndroid : public BrowserAccessibility {
   const char* GetClassName() const;
   base::string16 GetText() const override;
 
+  base::string16 GetRoleDescription() const;

[David Tseng, 2016/02/02 18:38:57]

const base::string16&

[dmazzoni, 2016/02/03 17:55:07]

Can't do that because the function doesn't just return a reference to an
existing string of global scope, it returns a string object.

+
   int GetItemIndex() const;
   int GetItemCount() const;