diff --git a/chromium_src/BUILD.gn b/chromium_src/BUILD.gn
index 9554497aec..3511ff6098 100644
--- a/chromium_src/BUILD.gn
+++ b/chromium_src/BUILD.gn
@@ -769,6 +769,8 @@ source_set("tab_manager") {
 
   include_dirs = [ "." ] # force this to appear before the chromium src dir
   sources = [
+    "//chrome/browser/defaults.cc",
+    "//chrome/browser/defaults.h",
     "//chrome/browser/engagement/site_engagement_metrics.cc",
     "//chrome/browser/engagement/site_engagement_metrics.h",
     "//chrome/browser/engagement/site_engagement_score.cc",
@@ -790,6 +792,8 @@ source_set("tab_manager") {
     "//chrome/browser/memory_details_win.cc",
     "//chrome/browser/ui/browser_tab_strip_tracker.cc",
     "//chrome/browser/ui/browser_tab_strip_tracker.h",
+    "chrome/browser/ui/tab_contents/core_tab_helper.cc",
+    "//chrome/browser/ui/tab_contents/core_tab_helper.h",
     "//chrome/browser/ui/tabs/tab_strip_model.cc",
     "//chrome/browser/ui/tabs/tab_strip_model.h",
     "//chrome/browser/ui/tabs/tab_strip_model_delegate.h",
@@ -797,6 +801,8 @@ source_set("tab_manager") {
     "//chrome/browser/ui/tabs/tab_strip_model_observer.h",
     "//chrome/browser/ui/tabs/tab_strip_model_order_controller.cc",
     "//chrome/browser/ui/tabs/tab_strip_model_order_controller.h",
+    "chrome/browser/ui/tabs/tab_utils.cc",
+    "//chrome/browser/ui/tabs/tab_utils.h",
     "//chrome/browser/ui/tab_contents/tab_contents_iterator.cc",
     "//chrome/browser/ui/tab_contents/tab_contents_iterator.h",
   ]
diff --git a/chromium_src/chrome/browser/ui/tab_contents/core_tab_helper.cc b/chromium_src/chrome/browser/ui/tab_contents/core_tab_helper.cc
new file mode 100644
index 0000000000..8b962869e4
--- /dev/null
+++ b/chromium_src/chrome/browser/ui/tab_contents/core_tab_helper.cc
@@ -0,0 +1,11 @@
+// Copyright (c) 2012 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/ui/tab_contents/core_tab_helper.h"
+
+DEFINE_WEB_CONTENTS_USER_DATA_KEY(CoreTabHelper);
+
+void CoreTabHelper::OnCloseStarted() {
+  NOTREACHED();
+}
diff --git a/chromium_src/chrome/browser/ui/tabs/tab_utils.cc b/chromium_src/chrome/browser/ui/tabs/tab_utils.cc
new file mode 100644
index 0000000000..25319c6564
--- /dev/null
+++ b/chromium_src/chrome/browser/ui/tabs/tab_utils.cc
@@ -0,0 +1,28 @@
+// Copyright (c) 2012 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/ui/tabs/tab_utils.h"
+
+namespace chrome {
+
+bool CanToggleAudioMute(content::WebContents* contents) {
+  NOTREACHED();
+  return false;
+}
+
+TabMutedResult SetTabAudioMuted(content::WebContents* contents,
+                                bool mute,
+                                TabMutedReason reason,
+                                const std::string& extension_id) {
+  NOTREACHED();
+  return TabMutedResult::FAIL_NOT_ENABLED;
+}
+
+bool AreAllTabsMuted(const TabStripModel& tab_strip,
+                     const std::vector<int>& indices) {
+  NOTREACHED();
+  return false;
+}
+
+}  // namespace chrome