Reland: Move ExtensionProcessManager to src/extensions, part 4

extensions/browser/process_manager.h

 // 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.
 
-#ifndef CHROME_BROWSER_EXTENSIONS_EXTENSION_PROCESS_MANAGER_H_
-#define CHROME_BROWSER_EXTENSIONS_EXTENSION_PROCESS_MANAGER_H_
+#ifndef EXTENSIONS_BROWSER_PROCESS_MANAGER_H_
+#define EXTENSIONS_BROWSER_PROCESS_MANAGER_H_
 
 #include <map>
 #include <set>
 #include <string>
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "extensions/common/view_type.h"
 
 class GURL;
 
 namespace content {
 class BrowserContext;
 class DevToolsAgentHost;
 class RenderViewHost;
 class SiteInstance;
 };
 
 namespace extensions {
+
 class Extension;
 class ExtensionHost;
-}
 
 // Manages dynamic state of running Chromium extensions. There is one instance
 // of this class per Profile. OTR Profiles have a separate instance that keeps
 // track of split-mode extensions only.
-class ExtensionProcessManager : public content::NotificationObserver {
+class ProcessManager : public content::NotificationObserver {
  public:
   typedef std::set<extensions::ExtensionHost*> ExtensionHostSet;
   typedef ExtensionHostSet::const_iterator const_iterator;
 
-  static ExtensionProcessManager* Create(content::BrowserContext* context);
-  virtual ~ExtensionProcessManager();
+  static ProcessManager* Create(content::BrowserContext* context);
+  virtual ~ProcessManager();
 
   const ExtensionHostSet& background_hosts() const {
     return background_hosts_;
   }
 
   typedef std::set<content::RenderViewHost*> ViewSet;
   const ViewSet GetAllViews() const;
 
   // Creates a new UI-less extension instance.  Like CreateViewHost, but not
   // displayed anywhere.
-  virtual extensions::ExtensionHost* CreateBackgroundHost(
-      const extensions::Extension* extension,
-      const GURL& url);
+  virtual ExtensionHost* CreateBackgroundHost(const Extension* extension,
+                                              const GURL& url);
 
   // Gets the ExtensionHost for the background page for an extension, or NULL if
   // the extension isn't running or doesn't have a background page.
-  extensions::ExtensionHost* GetBackgroundHostForExtension(
-      const std::string& extension_id);
+  ExtensionHost* GetBackgroundHostForExtension(const std::string& extension_id);
 
   // Returns the SiteInstance that the given URL belongs to.
   // TODO(aa): This only returns correct results for extensions and packaged
   // apps, not hosted apps.
   virtual content::SiteInstance* GetSiteInstanceForURL(const GURL& url);
 
   // Unregisters a RenderViewHost as hosting any extension.
   void UnregisterRenderViewHost(content::RenderViewHost* render_view_host);
 
   // Returns all RenderViewHosts that are registered for the specified
   // extension.
   std::set<content::RenderViewHost*> GetRenderViewHostsForExtension(
       const std::string& extension_id);
 
   // Returns the extension associated with the specified RenderViewHost, or
   // NULL.
-  const extensions::Extension* GetExtensionForRenderViewHost(
+  const Extension* GetExtensionForRenderViewHost(
       content::RenderViewHost* render_view_host);
 
   // Returns true if the (lazy) background host for the given extension has
   // already been sent the unload event and is shutting down.
   bool IsBackgroundHostClosing(const std::string& extension_id);
 
   // Getter and setter for the lazy background page's keepalive count. This is
   // the count of how many outstanding "things" are keeping the page alive.
   // When this reaches 0, we will begin the process of shutting down the page.
   // "Things" include pending events, resource loads, and API calls.
-  int GetLazyKeepaliveCount(const extensions::Extension* extension);
-  int IncrementLazyKeepaliveCount(const extensions::Extension* extension);
-  int DecrementLazyKeepaliveCount(const extensions::Extension* extension);
+  int GetLazyKeepaliveCount(const Extension* extension);
+  int IncrementLazyKeepaliveCount(const Extension* extension);
+  int DecrementLazyKeepaliveCount(const Extension* extension);
 
   void IncrementLazyKeepaliveCountForView(
       content::RenderViewHost* render_view_host);
 
   // Handles a response to the ShouldSuspend message, used for lazy background
   // pages.
   void OnShouldSuspendAck(const std::string& extension_id, int sequence_id);
 
   // Same as above, for the Suspend message.
   void OnSuspendAck(const std::string& extension_id);
 
   // Tracks network requests for a given RenderViewHost, used to know
   // when network activity is idle for lazy background pages.
   void OnNetworkRequestStarted(content::RenderViewHost* render_view_host);
   void OnNetworkRequestDone(content::RenderViewHost* render_view_host);
 
   // Prevents |extension|'s background page from being closed and sends the
   // onSuspendCanceled() event to it.
-  void CancelSuspend(const extensions::Extension* extension);
+  void CancelSuspend(const Extension* extension);
 
   // If |defer| is true background host creation is to be deferred until this is
   // called again with |defer| set to false, at which point all deferred
   // background hosts will be created.  Defaults to false.
   void DeferBackgroundHostCreation(bool defer);
 
   // Ensures background hosts are loaded for a new browser window.
   void OnBrowserWindowReady();
 
   // Gets the BrowserContext associated with site_instance_ and all other
   // related SiteInstances.
   content::BrowserContext* GetBrowserContext() const;
 
  protected:
   // If |context| is incognito pass the master context as |original_context|.
   // Otherwise pass the same context for both.
-  ExtensionProcessManager(content::BrowserContext* context,
-                          content::BrowserContext* original_context);
+  ProcessManager(content::BrowserContext* context,
+                 content::BrowserContext* original_context);
 
   // Called on browser shutdown to close our extension hosts.
   void CloseBackgroundHosts();
 
   // content::NotificationObserver:
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
   // Load all background pages once the profile data is ready and the pages
   // should be loaded.
   void CreateBackgroundHostsForProfileStartup();
 
   content::NotificationRegistrar registrar_;
 
   // The set of ExtensionHosts running viewless background extensions.
   ExtensionHostSet background_hosts_;
 
   // A SiteInstance related to the SiteInstance for all extensions in
   // this profile.  We create it in such a way that a new
   // browsing instance is created.  This controls process grouping.
   scoped_refptr<content::SiteInstance> site_instance_;
 
  private:
-  friend class ExtensionProcessManagerTest;
+  friend class ProcessManagerTest;
 
   // Extra information we keep for each extension's background page.
   struct BackgroundPageData;
   typedef std::string ExtensionId;
   typedef std::map<ExtensionId, BackgroundPageData> BackgroundPageDataMap;
   typedef std::map<content::RenderViewHost*,
       extensions::ViewType> ExtensionRenderViews;
 
   // Called just after |host| is created so it can be registered in our lists.
-  void OnBackgroundHostCreated(extensions::ExtensionHost* host);
+  void OnBackgroundHostCreated(ExtensionHost* host);
 
   // Close the given |host| iff it's a background page.
-  void CloseBackgroundHost(extensions::ExtensionHost* host);
+  void CloseBackgroundHost(ExtensionHost* host);
 
   // These are called when the extension transitions between idle and active.
   // They control the process of closing the background page when idle.
   void OnLazyBackgroundPageIdle(const std::string& extension_id,
                                 int sequence_id);
   void OnLazyBackgroundPageActive(const std::string& extension_id);
   void CloseLazyBackgroundPageNow(const std::string& extension_id,
                                   int sequence_id);
 
   // Potentially registers a RenderViewHost, if it is associated with an
@@ skipping 28 matching lines @@
   base::TimeDelta event_page_suspending_time_;
 
   // If true, then creation of background hosts is suspended.
   bool defer_background_host_creation_;
 
   // True if we have created the startup set of background hosts.
   bool startup_background_hosts_created_;
 
   base::Callback<void(content::DevToolsAgentHost*, bool)> devtools_callback_;
 
-  base::WeakPtrFactory<ExtensionProcessManager> weak_ptr_factory_;
+  base::WeakPtrFactory<ProcessManager> weak_ptr_factory_;
 
-  DISALLOW_COPY_AND_ASSIGN(ExtensionProcessManager);
+  DISALLOW_COPY_AND_ASSIGN(ProcessManager);
 };
 
-#endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_PROCESS_MANAGER_H_
+}  // namespace extensions
+
+#endif  // EXTENSIONS_BROWSER_PROCESS_MANAGER_H_