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

content/public/android/java/src/org/chromium/content/browser/accessibility/BrowserAccessibilityManager.java

Index: content/public/android/java/src/org/chromium/content/browser/accessibility/BrowserAccessibilityManager.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/accessibility/BrowserAccessibilityManager.java b/content/public/android/java/src/org/chromium/content/browser/accessibility/BrowserAccessibilityManager.java
index 1f1a5f8f989d3d3ccbf2d1e0d8d066c87987edf9..629b9d68e00bc091f53d032ac00d75dcb66882c6 100644
--- a/content/public/android/java/src/org/chromium/content/browser/accessibility/BrowserAccessibilityManager.java
+++ b/content/public/android/java/src/org/chromium/content/browser/accessibility/BrowserAccessibilityManager.java
@@ -75,6 +75,9 @@ public class BrowserAccessibilityManager {
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
             return new LollipopBrowserAccessibilityManager(
                     nativeBrowserAccessibilityManagerAndroid, contentViewCore);
+        } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
+            return new KitKatBrowserAccessibilityManager(
+                    nativeBrowserAccessibilityManagerAndroid, contentViewCore);
         } else {
             return new BrowserAccessibilityManager(
                     nativeBrowserAccessibilityManagerAndroid, contentViewCore);
@@ -856,6 +859,12 @@ public class BrowserAccessibilityManager {
     }
 
     @CalledByNative
+    protected void setAccessibilityNodeInfoKitKatAttributes(AccessibilityNodeInfo node,
+            String roleDescription) {
+        // Requires KitKat or higher.
+    }
+
+    @CalledByNative
     protected void setAccessibilityNodeInfoLollipopAttributes(AccessibilityNodeInfo node,
             boolean canOpenPopup,
             boolean contentInvalid,