Implementing TabManager extensions API Discard Function.

chrome/browser/extensions/api/tabs/tabs_api.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_API_TABS_TABS_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_TABS_TABS_API_H_
 
 #include <string>
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "chrome/browser/extensions/chrome_extension_function.h"
 #include "chrome/browser/extensions/chrome_extension_function_details.h"
 #include "chrome/common/extensions/api/tabs.h"
 #include "components/zoom/zoom_controller.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "extensions/browser/api/execute_code_function.h"
 #include "extensions/browser/api/web_contents_capture_client.h"
+#include "extensions/browser/extension_function.h"
 #include "extensions/common/extension_resource.h"
 #include "extensions/common/user_script.h"
 #include "url/gurl.h"
 
 class GURL;
 class SkBitmap;
 class TabStripModel;
 
 namespace base {
 class DictionaryValue;
@@ skipping 99 matching lines @@
 class TabsDuplicateFunction : public ChromeSyncExtensionFunction {
   ~TabsDuplicateFunction() override {}
   bool RunSync() override;
   DECLARE_EXTENSION_FUNCTION("tabs.duplicate", TABS_DUPLICATE)
 };
 class TabsHighlightFunction : public ChromeSyncExtensionFunction {
   ~TabsHighlightFunction() override {}
   bool RunSync() override;
   bool HighlightTab(TabStripModel* tabstrip,
                     ui::ListSelectionModel* selection,
-                    int *active_index,
+                    int* active_index,
                     int index);
   DECLARE_EXTENSION_FUNCTION("tabs.highlight", TABS_HIGHLIGHT)
 };
 class TabsUpdateFunction : public ChromeAsyncExtensionFunction {
  public:
   TabsUpdateFunction();
 
  protected:
   ~TabsUpdateFunction() override {}
   virtual bool UpdateURL(const std::string& url,
@@ skipping 165 matching lines @@
 
 class TabsGetZoomSettingsFunction : public ZoomAPIFunction {
  private:
   ~TabsGetZoomSettingsFunction() override {}
 
   bool RunAsync() override;
 
   DECLARE_EXTENSION_FUNCTION("tabs.getZoomSettings", TABS_GETZOOMSETTINGS)
 };
 
+class TabsDiscardFunction : public UIThreadExtensionFunction {
+ public:
+  DECLARE_EXTENSION_FUNCTION("tabs.discard", TABS_DISCARD)
+
+  TabsDiscardFunction();
+
+ private:
+  ~TabsDiscardFunction() override;
+
+  // ExtensionFunction:
+  ExtensionFunction::ResponseAction Run() override;
+
+  DISALLOW_COPY_AND_ASSIGN(TabsDiscardFunction);
+};
+
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_TABS_TABS_API_H_