[Checkstyle] Enable additional name checks for Java.

android_webview/java/src/org/chromium/android_webview/AwContents.java

Index: android_webview/java/src/org/chromium/android_webview/AwContents.java
diff --git a/android_webview/java/src/org/chromium/android_webview/AwContents.java b/android_webview/java/src/org/chromium/android_webview/AwContents.java
index 63b400c378ff3aa39e8f9f4ee898cb813bdc59c9..9fe979ff2c8b30742d84362cb1fe12f61f8a986d 100644
--- a/android_webview/java/src/org/chromium/android_webview/AwContents.java
+++ b/android_webview/java/src/org/chromium/android_webview/AwContents.java
@@ -1091,11 +1091,11 @@ public class AwContents {
         // was adding them in a very narrow set of conditions. See http://crbug.com/306873
         // However, if the embedder is attempting to inject a Referer header for their
         // loadUrl call, then we set that separately and remove it from the extra headers map/
-        final String REFERER = "referer";
+        final String referer = "referer";
         Map<String, String> extraHeaders = params.getExtraHeaders();
         if (extraHeaders != null) {
             for (String header : extraHeaders.keySet()) {
-                if (REFERER.equals(header.toLowerCase(Locale.US))) {
+                if (referer.equals(header.toLowerCase(Locale.US))) {
                     params.setReferrer(new Referrer(extraHeaders.remove(header), 1));
                     params.setExtraHeaders(extraHeaders);
                     break;