Revert of Forward BrowserAccessibility get_accState to AXPlatformNode.

ui/accessibility/platform/ax_platform_node_delegate.h

Index: ui/accessibility/platform/ax_platform_node_delegate.h
diff --git a/ui/accessibility/platform/ax_platform_node_delegate.h b/ui/accessibility/platform/ax_platform_node_delegate.h
index 7629ea5bab609a7ae30e7ca43f32ebe10dec98d1..6960a4444e7f197317eead6e26a3a84c74405490 100644
--- a/ui/accessibility/platform/ax_platform_node_delegate.h
+++ b/ui/accessibility/platform/ax_platform_node_delegate.h
@@ -84,16 +84,6 @@
   // Perform an accessibility action, switching on the ui::AXAction
   // provided in |data|.
   virtual bool AccessibilityPerformAction(const ui::AXActionData& data) = 0;
-
-  //
-  // Testing.
-  //
-
-  // Accessibility objects can have the "hot tracked" state set when
-  // the mouse is hovering over them, but this makes tests flaky because
-  // the test behaves differently when the mouse happens to be over an
-  // element. The default value should be falses if not in testing mode.
-  virtual bool ShouldIgnoreHoveredStateForTesting() = 0;
 };
 
 }  // namespace ui