Towards moving guest management to chrome: Introduce GuestViewManager

chrome/browser/guestview/guestview_manager.h

Index: chrome/browser/guestview/guestview_manager.h
diff --git a/chrome/browser/guestview/guestview_manager.h b/chrome/browser/guestview/guestview_manager.h
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+// 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 CHROME_BROWSER_GUESTVIEW_GUESTVIEW_MANAGER_H_
+#define CHROME_BROWSER_GUESTVIEW_GUESTVIEW_MANAGER_H_
+
+#include <map>
+
+#include "base/lazy_instance.h"
+#include "base/macros.h"
+#include "content/public/browser/browser_plugin_guest_manager_delegate.h"
+#include "content/public/browser/site_instance.h"
+#include "content/public/browser/web_contents.h"
+
+class GuestView;
+class GuestWebContentsObserver;
+class GURL;
+
+namespace content {
+class BrowserContext;
+}  // namespace content
+
+class GuestViewManager : public content::BrowserPluginGuestManagerDelegate,
+                         public base::SupportsUserData::Data {
+ public:
+  explicit GuestViewManager(content::BrowserContext* context);
+  virtual ~GuestViewManager();
+
+  static GuestViewManager* FromBrowserContext(content::BrowserContext* context);
+
+  // BrowserPluginGuestManagerDelegate implementation.
+  virtual int GetNextInstanceID() OVERRIDE;
+  virtual void AddGuest(int guest_instance_id,
+                        content::WebContents* guest_web_contents) OVERRIDE;
+  virtual void RemoveGuest(int guest_instance_id) OVERRIDE;
+  virtual content::WebContents* GetGuestByInstanceID(
+      int guest_instance_id,
+      int embedder_render_process_id) OVERRIDE;
+  virtual bool CanEmbedderAccessInstanceIDMaybeKill(
+      int embedder_render_process_id,
+      int guest_instance_id) OVERRIDE;
+  virtual bool CanEmbedderAccessInstanceID(int embedder_render_process_id,
+                                           int guest_instance_id) OVERRIDE;
+  virtual content::SiteInstance* GetGuestSiteInstance(
+      const GURL& guest_site) OVERRIDE;
+  virtual bool ForEachGuest(content::WebContents* embedder_web_contents,
+                            const GuestCallback& callback) OVERRIDE;
+  virtual void RequestInstanceID(
+      const std::string& src,
+      const InstanceIDResponseCallback& callback) OVERRIDE;
+
+ private:
+  friend class GuestWebContentsObserver;
+
+  void AddRenderProcessHostID(int render_process_host_id);
+
+  static bool CanEmbedderAccessGuest(int embedder_render_process_id,
+                                     GuestView* guest);
+
+  // Counts RenderProcessHost IDs of GuestViews.
+  std::multiset<int> render_process_host_id_set_;
+
+  // Contains guests' WebContents, mapping from their instance ids.
+  typedef std::map<int, content::WebContents*> GuestInstanceMap;
+  GuestInstanceMap guest_web_contents_by_instance_id_;
+
+  int next_instance_id_;
+  content::BrowserContext* context_;
+
+  DISALLOW_COPY_AND_ASSIGN(GuestViewManager);
+};
+
+#endif  // CHROME_BROWSER_GUESTVIEW_GUESTVIEW_MANAGER_H_