Generalize ContextualSearchEdgeSwipeHandler

chrome/android/java/src/org/chromium/chrome/browser/compositor/bottombar/OverlayPanel.java

Index: chrome/android/java/src/org/chromium/chrome/browser/compositor/bottombar/OverlayPanel.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/compositor/bottombar/OverlayPanel.java b/chrome/android/java/src/org/chromium/chrome/browser/compositor/bottombar/OverlayPanel.java
index af00630cde264f76a84c3bf465a4f2c344d218ed..ccdfd21677f997ca276800fb31ef53c57d9ffd96 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/compositor/bottombar/OverlayPanel.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/compositor/bottombar/OverlayPanel.java
@@ -394,6 +394,16 @@ public class OverlayPanel extends ContextualSearchPanelAnimation
     public void updateSceneLayer(ResourceManager resourceManager) {
     }
 
+    /**
+     * Determine if using a second layout for showing the overlay panel is possible. This should
+     * be overridden by each panel and returns true by default.
+     * @return True if the layout is supported.
+     * TODO(mdjones): Rename to supportsOverlayPanelLayout once the corresponding class is renamed.
+     */
+    public boolean supportsContextualSearchLayout() {
+        return true;
+    }
+
     // ============================================================================================
     // Generic Event Handling
     // ============================================================================================
@@ -489,6 +499,15 @@ public class OverlayPanel extends ContextualSearchPanelAnimation
         return false;
     }
 
+    /**
+     * If the panel is intercepting the initial bar swipe event. This should be overridden per
+     * panel.
+     * @return True if the panel intercepted the initial bar swipe.
+     */
+    public boolean onInterceptBarSwipe() {
+        return false;
+    }
+
     // ============================================================================================
     // Gesture Event helpers
     // ============================================================================================