ContentSettings API should not interact with <webview>

content/browser/web_contents/web_contents_impl.cc

 // 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 "content/browser/web_contents/web_contents_impl.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
@@ skipping 1525 matching lines @@
 
 SessionStorageNamespace* WebContentsImpl::GetSessionStorageNamespace(
     SiteInstance* instance) {
   return controller_.GetSessionStorageNamespace(instance);
 }
 
 FrameTree* WebContentsImpl::GetFrameTree() {
   return &frame_tree_;
 }
 
+bool WebContentsImpl::IsGuest() const {
+  return !!GetBrowserPluginGuest();
+}
+
 void WebContentsImpl::DidSendScreenRects(RenderWidgetHostImpl* rwh) {
   if (browser_plugin_embedder_)
     browser_plugin_embedder_->DidSendScreenRects();
 }
 
 void WebContentsImpl::UpdatePreferredSize(const gfx::Size& pref_size) {
   preferred_size_ = pref_size;
   if (delegate_)
     delegate_->UpdatePreferredSize(this, pref_size);
 }
@@ skipping 2144 matching lines @@
 }
 
 void WebContentsImpl::OnFrameRemoved(
     RenderViewHostImpl* render_view_host,
     int64 frame_id) {
    FOR_EACH_OBSERVER(WebContentsObserver, observers_,
                      FrameDetached(render_view_host, frame_id));
 }
 
 }  // namespace content