Fix two notification update issues on page navigation

chrome/android/javatests/src/org/chromium/chrome/browser/media/ui/NotificationTitleUpdatedTest.java

Index: chrome/android/javatests/src/org/chromium/chrome/browser/media/ui/NotificationTitleUpdatedTest.java
diff --git a/chrome/android/javatests/src/org/chromium/chrome/browser/media/ui/NotificationTitleUpdatedTest.java b/chrome/android/javatests/src/org/chromium/chrome/browser/media/ui/NotificationTitleUpdatedTest.java
index c49a01f85cd46a78358ccdb95cee6ce7325e2df9..263c13dd9f3b369de308595d21cbdda9509ae860 100644
--- a/chrome/android/javatests/src/org/chromium/chrome/browser/media/ui/NotificationTitleUpdatedTest.java
+++ b/chrome/android/javatests/src/org/chromium/chrome/browser/media/ui/NotificationTitleUpdatedTest.java
@@ -36,7 +36,8 @@ import org.chromium.net.test.EmbeddedTestServer;
 @RetryOnFailure
 public class NotificationTitleUpdatedTest extends ChromeActivityTestCaseBase<ChromeActivity> {
     private static final int NOTIFICATION_ID = R.id.media_playback_notification;
-    private static final String SIMPLE_PAGE_URL = "/simple_page.html";
+    private static final String SIMPLE_PAGE_URL_1 = "/content/test/data/title1.html";
+    private static final String SIMPLE_PAGE_URL_2 = "/content/test/data/title2.html";
 
     private Tab mTab;
     private EmbeddedTestServer mTestServer;
@@ -163,14 +164,28 @@ public class NotificationTitleUpdatedTest extends ChromeActivityTestCaseBase<Chr
     }
 
     @SmallTest
-    public void testMediaMetadataPersistsAfterInPageNavigation() throws Throwable {
+    public void testMediaMetadataResetsAfterSameOriginNavigation() throws Throwable {
         ensureTestServer();
-        loadUrl(mTestServer.getURL(SIMPLE_PAGE_URL));
+        loadUrl(mTestServer.getURL(SIMPLE_PAGE_URL_1));
         simulateMediaSessionStateChanged(mTab, true, false);
         simulateMediaSessionMetadataChanged(mTab, new MediaMetadata("title2", "", ""));
         assertTitleMatches("title2");
 
-        loadUrl(mTestServer.getURL(SIMPLE_PAGE_URL + "#some-anchor"));
+        loadUrl(mTestServer.getURL(SIMPLE_PAGE_URL_2));
+        simulateUpdateTitle(mTab, "title3");
+        assertTitleMatches("title3");
+    }
+
+    @SmallTest
+    public void testMediaMetadataPersistsAfterSamePageNavigation() throws Throwable {
+        ensureTestServer();
+        loadUrl(mTestServer.getURL(SIMPLE_PAGE_URL_1));
+        simulateMediaSessionStateChanged(mTab, true, false);
+        simulateMediaSessionMetadataChanged(mTab, new MediaMetadata("title2", "", ""));
+        assertTitleMatches("title2");
+
+        NotificationTestUtils.simulateSamePageNavigation(
+                getInstrumentation(), mTab, mTestServer.getURL(SIMPLE_PAGE_URL_1));
         assertTitleMatches("title2");
     }