PlzNavigate: support the WebRequest API

extensions/browser/extension_navigation_ui_data.cc

+// Copyright 2016 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 "extensions/browser/extension_navigation_ui_data.h"
+
+#include "content/public/browser/navigation_handle.h"
+
+namespace extensions {
+
+ExtensionNavigationUIData::ExtensionNavigationUIData() {}
+
+ExtensionNavigationUIData::ExtensionNavigationUIData(
+    content::NavigationHandle* navigation_handle,
+    int tab_id,
+    int window_id) {
+  frame_data_.frame_id = ExtensionApiFrameIdMap::GetFrameId(navigation_handle);

[Devlin, 2016/09/16 16:17:26]

It makes me a little sad that we now have two separate sources for this
information - the NavigationUIData, and the FrameIdMap.  I think ideally, we'd
only have the single spot.  That's probably a bit out of scope for this CL, but
can we add a TODO to that effect?

[clamy, 2016/09/19 15:10:03]

Done.

+  frame_data_.parent_frame_id =
+      ExtensionApiFrameIdMap::GetParentFrameId(navigation_handle);
+  frame_data_.tab_id = tab_id;
+  frame_data_.window_id = window_id;
+}
+
+std::unique_ptr<ExtensionNavigationUIData> ExtensionNavigationUIData::DeepCopy()
+    const {
+  std::unique_ptr<ExtensionNavigationUIData> copy(
+      new ExtensionNavigationUIData());
+  copy->set_frame_data(frame_data_);
+  return copy;
+}
+
+}  // namespace extensions