Fix host browser picking dialogs hanging after dismiss.

chrome/android/webapk/shell_apk/src/org/chromium/webapk/shell_apk/InstallHostBrowserDialog.java

Index: chrome/android/webapk/shell_apk/src/org/chromium/webapk/shell_apk/InstallHostBrowserDialog.java
diff --git a/chrome/android/webapk/shell_apk/src/org/chromium/webapk/shell_apk/InstallHostBrowserDialog.java b/chrome/android/webapk/shell_apk/src/org/chromium/webapk/shell_apk/InstallHostBrowserDialog.java
index ddf8d398e68506696980a4350243a57a4c945e4e..105895b783d5a9e3674f86b7bdf66fdcdb82f677 100644
--- a/chrome/android/webapk/shell_apk/src/org/chromium/webapk/shell_apk/InstallHostBrowserDialog.java
+++ b/chrome/android/webapk/shell_apk/src/org/chromium/webapk/shell_apk/InstallHostBrowserDialog.java
@@ -66,6 +66,12 @@ public class InstallHostBrowserDialog {
                         });
 
         AlertDialog dialog = builder.create();
+        dialog.setOnDismissListener(new DialogInterface.OnDismissListener() {
+            @Override
+            public void onDismiss(DialogInterface dialogInterface) {
+                listener.onConfirmQuit();
+            }
+        });
         dialog.show();
     };
 }