PlzNavigate: Chrome UI changes for new methods of WebContentsObserver

chrome/android/java/src/org/chromium/chrome/browser/customtabs/PostMessageHandler.java

Index: chrome/android/java/src/org/chromium/chrome/browser/customtabs/PostMessageHandler.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/customtabs/PostMessageHandler.java b/chrome/android/java/src/org/chromium/chrome/browser/customtabs/PostMessageHandler.java
index 43995dad417ebb2c79ec58b855d4161368eeb5e4..09b4f95fdf1d3c028573c033eb9caddf2edadd38 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/customtabs/PostMessageHandler.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/customtabs/PostMessageHandler.java
@@ -82,10 +82,10 @@ public class PostMessageHandler extends PostMessageServiceConnection {
             private boolean mNavigatedOnce;
 
             @Override
-            public void didNavigateMainFrame(String url, String baseUrl,
-                    boolean isNavigationToDifferentPage, boolean isFragmentNavigation,
-                    int statusCode) {
-                if (mNavigatedOnce && isNavigationToDifferentPage && mChannel != null) {
+            public void didFinishNavigation(String url, boolean isInMainFrame, boolean isErrorPage,
+                    boolean hasCommitted, boolean isSamePage, boolean isFragmentNavigation,
+                    Integer pageTransition, int errorCode, int httpStatusCode) {
+                if (mNavigatedOnce && isInMainFrame && !isSamePage && mChannel != null) {
                     webContents.removeObserver(this);
                     disconnectChannel();
                     unbindFromContext(ContextUtils.getApplicationContext());