[duet] No IPH of duet for landscape mode

Duet won't show in landscape mode, so IPH for duet show not show up in
landscape mode as well.

Here is related clank cl.
https://chrome-internal-review.googlesource.com/c/clank/internal/apps/+/2256299

Bug: 966792
Change-Id: I4ed882dfefa289ddfcaf3ec2204c4ac6f41043c8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1947383
Commit-Queue: Gang Wu <gangwu@chromium.org>
Reviewed-by: Matthew Jones <mdjones@chromium.org>
Cr-Commit-Position: refs/heads/master@{#721322}

chrome/android/java/src/org/chromium/chrome/browser/toolbar/bottom/BottomToolbarCoordinator.java

@@ -109,6 +109,7 @@ class BottomToolbarCoordinator {
         if (mTabSwitcherModeCoordinator != null) {
             mTabSwitcherModeCoordinator.showToolbarOnTop(!isVisible);
         }
+        mBrowsingModeCoordinator.onVisibilityChanged(isVisible);
     }
 
     /**

chrome/android/java/src/org/chromium/chrome/browser/toolbar/bottom/BrowsingModeBottomToolbarCoordinator.java

@@ -156,6 +156,17 @@ public class BrowsingModeBottomToolbarCoordinator {
         });
     }
 
+    /**
+     * @param isVisible Whether the bottom toolbar is visible.
+     */
+    void onVisibilityChanged(boolean isVisible) {
+        if (isVisible) return;
+        TabImpl tabImpl = (TabImpl) mTabProvider.get();
+        if (tabImpl != null) {
+            mMediator.dismissIPH(tabImpl.getActivity());
+        }
+    }
+
     /**
      * Initialize the bottom toolbar with the components that had native initialization
      * dependencies.

chrome/android/java/src/org/chromium/chrome/browser/toolbar/bottom/BrowsingModeBottomToolbarMediator.java

@@ -4,6 +4,7 @@
 
 package org.chromium.chrome.browser.toolbar.bottom;
 
+import android.support.v7.app.AppCompatActivity;
 import android.view.View;
 
 import androidx.annotation.ColorInt;
@@ -108,6 +109,14 @@ class BrowsingModeBottomToolbarMediator implements ThemeColorObserver {
         anchor.postDelayed(() -> tracker.dismissed(feature), DUET_IPH_BUBBLE_SHOW_DURATION_MS);
     }
 
+    /**
+     * Dismiss the IPH bubble for Chrome Duet.
+     * @param activity An activity to attach the IPH to.
+     */
+    void dismissIPH(AppCompatActivity activity) {
+        FeatureHighlightProvider.getInstance().dismiss(activity);
+    }
+
     /**
      * Clean up anything that needs to be when the bottom toolbar is destroyed.
      */

chrome/android/java/src/org/chromium/chrome/browser/widget/FeatureHighlightProvider.java

@@ -63,4 +63,10 @@ public class FeatureHighlightProvider {
             @TextAlignment int bodyAlignment, @StyleRes int bodyStyle, @ColorInt int pulseColor,
             @ColorInt int outerColor, @ColorInt int scrimColor, long timeoutMs,
             Runnable completeRunnable) {}
+
+    /**
+     * Dismiss the feature highlight bubble for a particular view.
+     * @param activity An activity to attach the IPH to.
+     */
+    public void dismiss(AppCompatActivity activity) {}
 }