aw: Reorder modifiers in SharedWebViewChromium

Per JLS guide, "static" is prior to "final". Caught by style check
landed on crbug.com/1003711 for my other CL, but that CL didn't touch
this line.

Bug: None
Change-Id: I964b633f9ddce9a287d35d2bdbaa146435d8923c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1824177Reviewed-by: Tao Bai <michaelbai@chromium.org>
Commit-Queue: Shimi Zhang <ctzsm@chromium.org>
Cr-Commit-Position: refs/heads/master@{#699543}

android_webview/glue/java/src/com/android/webview/chromium/SharedWebViewChromium.java

@@ -28,7 +28,7 @@ public class SharedWebViewChromium {
     private SharedWebViewContentsClientAdapter mContentsClientAdapter;
 
     // Default WebViewClient used to avoid null checks.
-    final static WebViewClient sNullWebViewClient = new WebViewClient();
+    static final WebViewClient sNullWebViewClient = new WebViewClient();
     // The WebViewClient instance that was passed to WebView.setWebViewClient().
     private WebViewClient mWebViewClient = sNullWebViewClient;
     private WebChromeClient mWebChromeClient;