PlzNavigate: checking post_id() in test PostInSubframe.

content/browser/frame_host/navigation_controller_impl_browsertest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/frame_host/navigation_controller_impl.h"
 
 #include <stdint.h>
 #include <algorithm>
 #include <utility>
 #include <vector>
@@ skipping 5825 matching lines @@
   EXPECT_EQ(2, controller.GetEntryCount());
   {
     NavigationEntryImpl* entry = controller.GetLastCommittedEntry();
     FrameNavigationEntry* root_entry = entry->GetFrameEntry(root);
     FrameNavigationEntry* frame_entry = entry->GetFrameEntry(frame);
     EXPECT_NE(nullptr, root_entry);
     EXPECT_NE(nullptr, frame_entry);
     EXPECT_EQ("GET", root_entry->method());
     EXPECT_EQ(-1, root_entry->post_id());
     EXPECT_EQ("POST", frame_entry->method());
-    // TODO(clamy): Check the post id as well when PlzNavigate handles it
-    // properly.
-    if (!IsBrowserSideNavigationEnabled())
-      EXPECT_NE(-1, frame_entry->post_id());
+    EXPECT_NE(-1, frame_entry->post_id());
     EXPECT_FALSE(entry->GetHasPostData());
     EXPECT_EQ(-1, entry->GetPostID());
   }
 }
 
 // Tests that POST body is not lost when decidePolicyForNavigation tells the
 // renderer to route the request via FrameHostMsg_OpenURL sent to the browser.
 // See also https://crbug.com/344348.
 IN_PROC_BROWSER_TEST_F(NavigationControllerBrowserTest, PostViaOpenUrlMsg) {
   GURL main_url(
@@ skipping 1007 matching lines @@
   EXPECT_EQ(1, controller.GetLastCommittedEntryIndex());
   EXPECT_FALSE(
       controller.GetLastCommittedEntry()->GetURL().SchemeIs(url::kDataScheme));
   EXPECT_EQ(redirect_to_unsafe_url,
             controller.GetLastCommittedEntry()->GetVirtualURL());
   EXPECT_EQ(url::kAboutBlankURL,
             controller.GetLastCommittedEntry()->GetURL().spec());
 }
 
 }  // namespace content