Docs: Fixed wrong return type of a method

The code sample within the Populating accessibility events section now uses a
boolean return type for the dispatchPopulateAccessibilityEvent() method.

Bug: 28001824
Change-Id: Ie29c3588fc0930b3f3646c6f6ce61c60842c2232
diff --git a/docs/html/guide/topics/ui/accessibility/apps.jd b/docs/html/guide/topics/ui/accessibility/apps.jd
index 47e2eff..c5fe125 100644
--- a/docs/html/guide/topics/ui/accessibility/apps.jd
+++ b/docs/html/guide/topics/ui/accessibility/apps.jd
@@ -454,18 +454,20 @@
 
 <pre>
 &#64;Override
-public void dispatchPopulateAccessibilityEvent(AccessibilityEvent event) {
-    super.dispatchPopulateAccessibilityEvent(event);
+public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) {
     // Call the super implementation to populate its text to the event, which
     // calls onPopulateAccessibilityEvent() on API Level 14 and up.
-
+    boolean completed = super.dispatchPopulateAccessibilityEvent(event);
+    
     // In case this is running on a API revision earlier that 14, check
     // the text content of the event and add an appropriate text
     // description for this custom view:
     CharSequence text = getText();
     if (!TextUtils.isEmpty(text)) {
         event.getText().add(text);
+        return true;
     }
+    return completed;
 }
 </pre>