GuestView: Show status bubbles in browser

extensions/browser/guest_view/guest_view_manager.h

 // 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.
 
 #ifndef EXTENSIONS_BROWSER_GUEST_VIEW_GUEST_VIEW_MANAGER_H_
 #define EXTENSIONS_BROWSER_GUEST_VIEW_GUEST_VIEW_MANAGER_H_
 
 #include <map>
 
 #include "base/gtest_prod_util.h"
@@ skipping 13 matching lines @@
 namespace extensions{
 class GuestViewBase;
 class GuestViewManagerFactory;
 
 class GuestViewManager : public content::BrowserPluginGuestManager,
                          public base::SupportsUserData::Data {
  public:
   explicit GuestViewManager(content::BrowserContext* context);
   ~GuestViewManager() override;
 
+  // Returns the GuestViewManager associated with |context|. If one isn't
+  // available, then it is created and returned.
   static GuestViewManager* FromBrowserContext(content::BrowserContext* context);
 
+  // Returns the GuestViewManager associated with |context|. If one isn't
+  // available, then nullptr is returned.
+  static GuestViewManager* FromBrowserContextIfAvailable(
+      content::BrowserContext* context);
+
   // Overrides factory for testing. Default (NULL) value indicates regular
   // (non-test) environment.
   static void set_factory_for_testing(GuestViewManagerFactory* factory) {
     GuestViewManager::factory_ = factory;
   }
   // Returns the guest WebContents associated with the given |guest_instance_id|
   // if the provided |embedder_render_process_id| is allowed to access it.
   // If the embedder is not allowed access, the embedder will be killed, and
   // this method will return NULL. If no WebContents exists with the given
   // instance ID, then NULL will also be returned.
@@ skipping 118 matching lines @@
   std::set<int> removed_instance_ids_;
 
   content::BrowserContext* context_;
 
   DISALLOW_COPY_AND_ASSIGN(GuestViewManager);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_GUEST_VIEW_GUEST_VIEW_MANAGER_H_