[Document mode] Force more pathways to use the TabDelegate instead

chrome/android/java/src/org/chromium/chrome/browser/tabmodel/document/DocumentTabModelSelector.java

Index: chrome/android/java/src/org/chromium/chrome/browser/tabmodel/document/DocumentTabModelSelector.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/document/DocumentTabModelSelector.java b/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/document/DocumentTabModelSelector.java
index 48e4db45dc53a633c1ef17bfacd9a47f50843faf..59f9989e1f265bab4555a0f61bcb4b5a51f7f248 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/document/DocumentTabModelSelector.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/document/DocumentTabModelSelector.java
@@ -184,22 +184,8 @@ public class DocumentTabModelSelector extends TabModelSelectorBase
     @Override
     public Tab openNewTab(LoadUrlParams loadUrlParams, TabLaunchType type, Tab parent,
             boolean incognito) {
-        PendingDocumentData params = null;
-        if (loadUrlParams.getPostData() != null
-                || loadUrlParams.getVerbatimHeaders() != null
-                || loadUrlParams.getReferrer() != null) {
-            params = new PendingDocumentData();
-            params.postData = loadUrlParams.getPostData();
-            params.extraHeaders = loadUrlParams.getVerbatimHeaders();
-            params.referrer = loadUrlParams.getReferrer();
-        }
-
-        Activity parentActivity =
-                parent == null ? null : parent.getWindowAndroid().getActivity().get();
-
         TabDelegate delegate = getTabCreator(incognito);
-        Tab parentTab = delegate.getActivityTab(mActivityDelegate, parentActivity);
-        delegate.createNewTab(loadUrlParams, type, parentTab);
+        delegate.createNewTab(loadUrlParams, type, parent);
         return null;
     }