Android: Fix fullscreen/PIP mode bug

PIP Controller was handling a fullscreen event incorrectly. This CL
fixes by dismissing the activity at fullscreen exit (not entering).

Bug: 1048522
Change-Id: I0ae9d5424a6aed1ae66457b81ab79d5864eff2a4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2059028Reviewed-by: David Trainor <dtrainor@chromium.org>
Commit-Queue: Jinsuk Kim <jinsukkim@chromium.org>
Cr-Commit-Position: refs/heads/master@{#744523}

chrome/android/java/src/org/chromium/chrome/browser/media/PictureInPictureController.java

@@ -26,7 +26,6 @@ import org.chromium.base.metrics.RecordHistogram;
 import org.chromium.chrome.browser.ChromeActivity;
 import org.chromium.chrome.browser.flags.ChromeFeatureList;
 import org.chromium.chrome.browser.fullscreen.ChromeFullscreenManager.FullscreenListener;
-import org.chromium.chrome.browser.fullscreen.FullscreenOptions;
 import org.chromium.chrome.browser.infobar.InfoBarContainer;
 import org.chromium.chrome.browser.tab.EmptyTabObserver;
 import org.chromium.chrome.browser.tab.Tab;
@@ -219,7 +218,7 @@ public class PictureInPictureController {
         final TabModelSelector tabModelSelector = TabModelSelector.from(activityTab);
         final FullscreenListener fullscreenListener = new FullscreenListener() {
             @Override
-            public void onEnterFullscreen(Tab tab, FullscreenOptions options) {
+            public void onExitFullscreen(Tab tab) {
                 dismissActivity(activity, METRICS_END_REASON_LEFT_FULLSCREEN);
             }
         };