[Android WebView] Implement a better OnReceivedError callback

android_webview/java/src/org/chromium/android_webview/AwContentsClientCallbackHelper.java

Index: android_webview/java/src/org/chromium/android_webview/AwContentsClientCallbackHelper.java
diff --git a/android_webview/java/src/org/chromium/android_webview/AwContentsClientCallbackHelper.java b/android_webview/java/src/org/chromium/android_webview/AwContentsClientCallbackHelper.java
index 73dd0c804d53716b121efff445ca2ad55b4f54b6..500d22c0806a197dbf57f69c791e9856f038b049 100644
--- a/android_webview/java/src/org/chromium/android_webview/AwContentsClientCallbackHelper.java
+++ b/android_webview/java/src/org/chromium/android_webview/AwContentsClientCallbackHelper.java
@@ -88,6 +88,7 @@ public class AwContentsClientCallbackHelper {
     private static final int MSG_ON_NEW_PICTURE = 6;
     private static final int MSG_ON_SCALE_CHANGED_SCALED = 7;
     private static final int MSG_ON_RECEIVED_HTTP_ERROR = 8;
+    private static final int MSG_ON_PAGE_FINISHED = 9;
 
     // Minimum period allowed between consecutive onNewPicture calls, to rate-limit the callbacks.
     private static final long ON_NEW_PICTURE_MIN_PERIOD_MILLIS = 500;
@@ -157,6 +158,11 @@ public class AwContentsClientCallbackHelper {
                     mContentsClient.onReceivedHttpError(info.mRequest, info.mResponse);
                     break;
                 }
+                case MSG_ON_PAGE_FINISHED: {
+                    final String url = (String) msg.obj;
+                    mContentsClient.onPageFinished(url);
+                    break;
+                }
                 default:
                     throw new IllegalStateException(
                             "AwContentsClientCallbackHelper: unhandled message " + msg.what);
@@ -219,4 +225,8 @@ public class AwContentsClientCallbackHelper {
                 new OnReceivedHttpErrorInfo(request, response);
         mHandler.sendMessage(mHandler.obtainMessage(MSG_ON_RECEIVED_HTTP_ERROR, info));
     }
+
+    public void postOnPageFinished(String url) {
+        mHandler.sendMessage(mHandler.obtainMessage(MSG_ON_PAGE_FINISHED, url));
+    }
 }