WebContentsObserver update for PlzNavigate methods

chrome/android/java/src/org/chromium/chrome/browser/webapps/FullScreenActivity.java

Index: chrome/android/java/src/org/chromium/chrome/browser/webapps/FullScreenActivity.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/webapps/FullScreenActivity.java b/chrome/android/java/src/org/chromium/chrome/browser/webapps/FullScreenActivity.java
index 901b62b51f70f11bef575b192284684282548dd1..ec0a8f689e83e0f569f2d1d98a4d74caf16d116d 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/webapps/FullScreenActivity.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/webapps/FullScreenActivity.java
@@ -169,8 +169,9 @@ public abstract class FullScreenActivity extends ChromeActivity {
         ContentViewCore.fromWebContents(webContents).setFullscreenRequiredForOrientationLock(false);
         mWebContentsObserver = new WebContentsObserver(webContents) {
             @Override
-            public void didCommitProvisionalLoadForFrame(
-                    long frameId, boolean isMainFrame, String url, int transitionType) {
+            public void didFinishNavigation(String validatedUrl, boolean isMainFrame,
+                    boolean isErrorPage, boolean hasCommitted, boolean isNavigationToDifferentPage,
+                    boolean isFragmentNavigation, boolean isReload) {
                 if (!isMainFrame) return;
                 // Notify the renderer to permanently hide the top controls since they do
                 // not apply to fullscreen content views.