[Contextual Search] Add a handle to the bar when Chrome Home is enabled

chrome/android/java/src/org/chromium/chrome/browser/compositor/bottombar/contextualsearch/ContextualSearchPanel.java

Index: chrome/android/java/src/org/chromium/chrome/browser/compositor/bottombar/contextualsearch/ContextualSearchPanel.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/compositor/bottombar/contextualsearch/ContextualSearchPanel.java b/chrome/android/java/src/org/chromium/chrome/browser/compositor/bottombar/contextualsearch/ContextualSearchPanel.java
index bbacc3ad4becc7285cb40fa63bb94266cbd32e10..3d9bbcaeeff234a06047375e6fc0d0bbdbb8de56 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/compositor/bottombar/contextualsearch/ContextualSearchPanel.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/compositor/bottombar/contextualsearch/ContextualSearchPanel.java
@@ -12,8 +12,8 @@ import android.os.Handler;
 import org.chromium.base.ActivityState;
 import org.chromium.base.ApiCompatibilityUtils;
 import org.chromium.base.VisibleForTesting;
-
 import org.chromium.chrome.R;
+import org.chromium.chrome.browser.ChromeActivity;
 import org.chromium.chrome.browser.compositor.LayerTitleCache;
 import org.chromium.chrome.browser.compositor.bottombar.OverlayContentProgressObserver;
 import org.chromium.chrome.browser.compositor.bottombar.OverlayPanel;
@@ -406,6 +406,15 @@ public class ContextualSearchPanel extends OverlayPanel {
                 || super.shouldHideAndroidBrowserControls();
     }
 
+    @Override
+    public void setChromeActivity(ChromeActivity activity) {
+        super.setChromeActivity(activity);
+
+        if (mActivity.getBottomSheet() == null) return;
+
+        addBarHandle(mActivity.getToolbarManager().getToolbar().getHeight());
+    }
+
     // ============================================================================================
     // Animation Handling
     // ============================================================================================