[Android] Mark infobars as gone when they are off the screen

chrome/android/java/src/org/chromium/chrome/browser/banners/SwipableOverlayView.java

Index: chrome/android/java/src/org/chromium/chrome/browser/banners/SwipableOverlayView.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/banners/SwipableOverlayView.java b/chrome/android/java/src/org/chromium/chrome/browser/banners/SwipableOverlayView.java
index babdce53210f925887ae7f713c5a3738d1fd3f46..78b3703e2ba535a4ba8376b06638360d9b793bad 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/banners/SwipableOverlayView.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/banners/SwipableOverlayView.java
@@ -18,6 +18,7 @@ import android.view.animation.DecelerateInterpolator;
 import android.view.animation.Interpolator;
 import android.widget.FrameLayout;
 
+import org.chromium.chrome.browser.widget.animation.CancelAwareAnimatorListener;
 import org.chromium.content.browser.ContentViewCore;
 import org.chromium.content_public.browser.GestureStateListener;
 
@@ -275,6 +276,7 @@ public abstract class SwipableOverlayView extends FrameLayout {
                         + computeScrollDifference(scrollOffsetY, scrollExtentY);
                 translation = Math.max(0.0f, Math.min(mTotalHeight, translation));
                 setTranslationY(translation);
+                updateVisibility();
             }
         };
     }
@@ -314,9 +316,23 @@ public abstract class SwipableOverlayView extends FrameLayout {
         mCurrentAnimation.setDuration(duration);
         mCurrentAnimation.addListener(mAnimatorListener);
         mCurrentAnimation.setInterpolator(mInterpolator);
+        mCurrentAnimation.addListener(new CancelAwareAnimatorListener() {
+            @Override
+            public void onEnd(Animator animator) {
+                updateVisibility();
+            }
+        });
         mCurrentAnimation.start();
     }
 
+    private void updateVisibility() {
+        if (getTranslationY() >= getHeight()) {
+            if (getVisibility() != GONE) setVisibility(GONE);
+        } else {
+            if (getVisibility() != VISIBLE) setVisibility(VISIBLE);
+        }
+    }
+
     private int computeScrollDifference(int scrollOffsetY, int scrollExtentY) {
         return scrollOffsetY + scrollExtentY - mInitialOffsetY;
     }