Get rid of enable-accessibility-logging switch.

content/renderer/accessibility/renderer_accessibility.h

Index: content/renderer/accessibility/renderer_accessibility.h
diff --git a/content/renderer/accessibility/renderer_accessibility.h b/content/renderer/accessibility/renderer_accessibility.h
index 1f9fd3614e05b0d0901567312e4cce53172fb0aa..9ddb6ed440562779fd36b2e47a6782d1546c96d3 100644
--- a/content/renderer/accessibility/renderer_accessibility.h
+++ b/content/renderer/accessibility/renderer_accessibility.h
@@ -76,16 +76,9 @@ class CONTENT_EXPORT RendererAccessibility : public RenderViewObserver {
   // no view or frame.
   blink::WebDocument GetMainDocument();
 
-#ifndef NDEBUG
-  const std::string AccessibilityEventToString(ui::AXEvent event);
-#endif
-
   // The RenderViewImpl that owns us.
   RenderViewImpl* render_view_;
 
-  // True if verbose logging of accessibility events is on.
-  bool logging_;
-
   DISALLOW_COPY_AND_ASSIGN(RendererAccessibility);
 };