Implement getWebViewClient and getWebChromeClient

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

Index: android_webview/glue/java/src/com/android/webview/chromium/WebViewContentsClientAdapter.java
diff --git a/android_webview/glue/java/src/com/android/webview/chromium/WebViewContentsClientAdapter.java b/android_webview/glue/java/src/com/android/webview/chromium/WebViewContentsClientAdapter.java
index 0748152047771c619c4a2ad238d46ac1ae12cab7..df71dd90b37ed3f6983be07cab730a3c3ddfc8a2 100644
--- a/android_webview/glue/java/src/com/android/webview/chromium/WebViewContentsClientAdapter.java
+++ b/android_webview/glue/java/src/com/android/webview/chromium/WebViewContentsClientAdapter.java
@@ -171,10 +171,18 @@ public class WebViewContentsClientAdapter extends AwContentsClient {
         }
     }
 
+    WebViewClient getWebViewClient() {
+        return mWebViewClient;

[sgurun-gerrit only, 2016/09/30 17:55:23]

what does this return if no webviewclient is set?

[hush (inactive), 2016/09/30 18:01:26]

It returns the sNullWebViewClient

[Nate Fischer, 2016/09/30 18:02:09]

This one gets initialized to sNullWebViewClient (a client created by the default
constructor), and mWebChromeClient is initialized to null. Should we change
these to be more consistent, or adjust documentation to emphasize the
differences?

+    }
+
     void setWebChromeClient(WebChromeClient client) {
         mWebChromeClient = client;
     }
 
+    WebChromeClient getWebChromeClient() {
+        return mWebChromeClient;
+    }
+
     void setDownloadListener(DownloadListener listener) {
         mDownloadListener = listener;
     }