PIPメソッド修正。

public_new/collaboration_documents.html

@@ -28,7 +28,7 @@
     <div class="collabo_nav_r">
       <div class="text-right d-flex align-items-center">
         <button type="button" name="button" class="btn add_user_btn"></button>
-        <button type="button" name="button" class="btn start_pip_btn" onclick="android.startPipMode();"></button>
+        <button type="button" name="button" class="btn start_pip_btn" onclick="CHAT_UI.startPipMode();"></button>
       </div>
     </div>
   </div>

public_new/js/chat-ui.js

@@ -2791,6 +2791,13 @@ CHAT_UI.insertFavoriteUserInCollaboration = function(shopMemberId) {
     CHAT_UI.dismissLoadingIndicator();
 };
 
+CHAT_UI.startPipMode() = function() {
+    if (CHAT_UTIL.isIOS()) {
+    } else if (CHAT_UTIL.isAndroid()) {
+        android.startPipMode();
+    }
+}
+
 CHAT_UI.confirmInviteUserListInCollaboration = function() {
     var selectedUsers = CHAT_DB.loadSelectedUsers();
     if (selectedUsers != "") {