New Task Manager - Phase 1.3.5: Implement Extension Task Providing

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

Index: chrome/browser/task_management/providers/web_contents/extension_tag.h
diff --git a/chrome/browser/task_management/providers/web_contents/extension_tag.h b/chrome/browser/task_management/providers/web_contents/extension_tag.h
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+// 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_EXTENSION_TAG_H_
+#define CHROME_BROWSER_TASK_MANAGEMENT_PROVIDERS_WEB_CONTENTS_EXTENSION_TAG_H_
+
+#include "chrome/browser/task_management/providers/web_contents/extension_task.h"
+#include "chrome/browser/task_management/providers/web_contents/web_contents_tag.h"
+
+namespace extensions {
+class Extension;
+}  // namespace extensions
+
+namespace task_management {
+
+// Defines a concrete UserData type for WebContents owned by extensions.
+class ExtensionTag : public WebContentsTag {
+ public:
+  // task_management::WebContentsTag:
+  ExtensionTask* CreateTask() const override;
+
+ private:
+  friend class WebContentsTags;
+
+  ExtensionTag(content::WebContents* web_contents,
+               const extensions::ViewType view_type);
+  ~ExtensionTag() override;
+
+  // The ViewType of the extension WebContents this tag is attached to.
+  const extensions::ViewType view_type_;
+
+  DISALLOW_COPY_AND_ASSIGN(ExtensionTag);
+};
+
+}  // namespace task_management
+
+#endif  // CHROME_BROWSER_TASK_MANAGEMENT_PROVIDERS_WEB_CONTENTS_EXTENSION_TAG_H_