Implement M SDK Android accessibility actions

content/browser/accessibility/browser_accessibility_manager_android.h

Index: content/browser/accessibility/browser_accessibility_manager_android.h
diff --git a/content/browser/accessibility/browser_accessibility_manager_android.h b/content/browser/accessibility/browser_accessibility_manager_android.h
index d17a6754821f820ba4327df38d9ba7d63c239ba7..3e6d072d9c8cdecf5ccbb8bf6c9c136bf8aa9b9a 100644
--- a/content/browser/accessibility/browser_accessibility_manager_android.h
+++ b/content/browser/accessibility/browser_accessibility_manager_android.h
@@ -154,6 +154,9 @@ class CONTENT_EXPORT BrowserAccessibilityManagerAndroid
                         const base::android::JavaParamRef<jobject>& obj,
                         jint id,
                         jboolean increment);
+  void ShowContextMenu(JNIEnv* env,
+                       const base::android::JavaParamRef<jobject>& obj,
+                       jint id);
 
   // Return the id of the next node in tree order in the direction given by
   // |forwards|, starting with |start_id|, that matches |element_type|,