Add PDF extension support (issue #1565)

libcef/browser/extensions/browser_extensions_util.cc

@@ -0,0 +1,35 @@
+// Copyright (c) 2015 The Chromium Embedded Framework 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 "libcef/browser/extensions/browser_extensions_util.h"
+
+#include "content/browser/browser_plugin/browser_plugin_embedder.h"
+#include "content/browser/browser_plugin/browser_plugin_guest.h"
+#include "content/browser/web_contents/web_contents_impl.h"
+
+namespace extensions {
+
+content::WebContents* GetGuestForOwnerContents(content::WebContents* guest) {
+  content::WebContentsImpl* guest_impl =
+      static_cast<content::WebContentsImpl*>(guest);
+  content::BrowserPluginEmbedder* embedder =
+      guest_impl->GetBrowserPluginEmbedder();
+  if (embedder) {
+    content::BrowserPluginGuest* guest = embedder->GetFullPageGuest();
+    if (guest)
+      return guest->web_contents();
+  }
+  return NULL;
+}
+
+content::WebContents* GetOwnerForGuestContents(content::WebContents* owner) {
+  content::WebContentsImpl* owner_impl =
+      static_cast<content::WebContentsImpl*>(owner);
+  content::BrowserPluginGuest* guest = owner_impl->GetBrowserPluginGuest();
+  if (guest)
+    return guest->embedder_web_contents();
+  return NULL;
+}
+
+}  // namespace extensions