Track where WebContents are created in order to better understand issue.

chrome/browser/android/tab_state.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 "chrome/browser/android/tab_state.h"
 
 #include <jni.h>
 #include <limits>
 #include <vector>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "base/pickle.h"
 #include "chrome/browser/android/tab_android.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "components/sessions/content/content_serialized_navigation_builder.h"
 #include "components/sessions/core/serialized_navigation_entry.h"
 #include "components/sessions/core/session_command.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/web_contents.h"
+#include "content/public/browser/web_contents_source.h"
 #include "jni/TabState_jni.h"
 
 using base::android::ConvertUTF16ToJavaString;
 using base::android::ConvertUTF8ToJavaString;
 using base::android::ScopedJavaLocalRef;
 using content::NavigationController;
 using content::WebContents;
 
 namespace {
 
@@ skipping 392 matching lines @@
   Profile* profile = ProfileManager::GetActiveUserProfile();
   ScopedVector<content::NavigationEntry> scoped_entries =
       sessions::ContentSerializedNavigationBuilder::ToNavigationEntries(
           navigations, profile);
 
   if (is_off_the_record)
     profile = profile->GetOffTheRecordProfile();
   WebContents::CreateParams params(profile);
   params.initially_hidden = initially_hidden;
   scoped_ptr<WebContents> web_contents(WebContents::Create(params));
+  WebContentsSource::CreateForWebContentsAndLocation(web_contents.get(),
+                                                     FROM_HERE);
   web_contents->GetController().Restore(
       current_entry_index,
       NavigationController::RESTORE_CURRENT_SESSION,
       &scoped_entries);
   return web_contents.release();
 }
 
 ScopedJavaLocalRef<jobject> WebContentsState::RestoreContentsFromByteBuffer(
     JNIEnv* env,
     jclass clazz,
@@ skipping 124 matching lines @@
       WebContentsState::RestoreContentsFromByteBuffer(env, clazz, state,
                                                       saved_state_version, true)
           .obj()));
   if (web_contents.get())
     TabAndroid::CreateHistoricalTabFromContents(web_contents.get());
 }
 
 bool RegisterTabState(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }