New Task Manager - Phase 1.3.2.B: Implement Tab Contents Task Providing (Prerender)

chrome/browser/task_management/providers/web_contents/web_contents_task_provider.h

 // Copyright 2015 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_TASK_MANAGEMENT_PROVIDERS_WEB_CONTENTS_WEB_CONTENTS_TASK_PROVIDER_H_
 #define CHROME_BROWSER_TASK_MANAGEMENT_PROVIDERS_WEB_CONTENTS_WEB_CONTENTS_TASK_PROVIDER_H_
 
 #include <map>
 
 #include "chrome/browser/task_management/providers/task_provider.h"
@@ skipping 11 matching lines @@
 // Defines a provider to provide the renderer tasks that are associated with
 // various |WebContents| from various services.
 // There should be no or only one instance of this class at any time.
 class WebContentsTaskProvider : public TaskProvider {
  public:
   WebContentsTaskProvider();
   ~WebContentsTaskProvider() override;
 
   // This will be called every time we're notified that a new |WebContentsTag|
   // has been created.
-  void OnWebContentsTagCreated(WebContentsTag* tag);
+  void OnWebContentsTagCreated(const WebContentsTag* tag);
+
+  // Manually remove |tag|'s corresponding Task.
+  void OnWebContentsTagRemoved(const WebContentsTag* tag);
 
   // task_management::TaskProvider:
   Task* GetTaskOfUrlRequest(int origin_pid,
                             int child_id,
                             int route_id) override;
 
   // Checks if the given |web_contents| is tracked by the provider.
   bool HasWebContents(content::WebContents* web_contents) const;
 
  private:
@@ skipping 11 matching lines @@
   // create for it to be able to track it.
   typedef std::map<content::WebContents*, WebContentsEntry*> EntryMap;
   EntryMap entries_map_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentsTaskProvider);
 };
 
 }  // namespace task_management
 
 #endif  // CHROME_BROWSER_TASK_MANAGEMENT_PROVIDERS_WEB_CONTENTS_WEB_CONTENTS_TASK_PROVIDER_H_