Adds new experimental accessibility extension api to enable or disable native accessibility.

chrome/browser/accessibility/accessibility_extension_api.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_ACCESSIBILITY_ACCESSIBILITY_EXTENSION_API_H_
 #define CHROME_BROWSER_ACCESSIBILITY_ACCESSIBILITY_EXTENSION_API_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
@@ skipping 62 matching lines @@
 // minimize the impact.
 class AccessibilitySetAccessibilityEnabledFunction
     : public SyncExtensionFunction {
   virtual ~AccessibilitySetAccessibilityEnabledFunction() {}
   virtual bool RunImpl() OVERRIDE;
   DECLARE_EXTENSION_FUNCTION(
       "experimental.accessibility.setAccessibilityEnabled",
       EXPERIMENTAL_ACCESSIBILITY_SETACCESSIBILITYENABLED)
 };
 
+// API function that enables or disables web content accessibility support.
+class AccessibilitySetNativeAccessibilityEnabledFunction
+    : public SyncExtensionFunction {
+  virtual ~AccessibilitySetNativeAccessibilityEnabledFunction() {}
+  virtual bool RunImpl() OVERRIDE;
+  DECLARE_EXTENSION_FUNCTION(
+      "experimental.accessibility.setNativeAccessibilityEnabled",
+      EXPERIMENTAL_ACCESSIBILITY_SETNATIVEACCESSIBILITYENABLED)
+};
+
 // API function that returns the most recent focused control.
 class AccessibilityGetFocusedControlFunction : public SyncExtensionFunction {
   virtual ~AccessibilityGetFocusedControlFunction() {}
   virtual bool RunImpl() OVERRIDE;
   DECLARE_EXTENSION_FUNCTION(
       "experimental.accessibility.getFocusedControl",
       EXPERIMENTAL_ACCESSIBILITY_GETFOCUSEDCONTROL)
 };
 
 // API function that returns alerts being shown on the give tab.
 class AccessibilityGetAlertsForTabFunction : public SyncExtensionFunction {
   virtual ~AccessibilityGetAlertsForTabFunction() {}
   virtual bool RunImpl() OVERRIDE;
   DECLARE_EXTENSION_FUNCTION(
       "experimental.accessibility.getAlertsForTab",
       EXPERIMENTAL_ACCESSIBILITY_GETALERTSFORTAB)
 };
 
 #endif  // CHROME_BROWSER_ACCESSIBILITY_ACCESSIBILITY_EXTENSION_API_H_