Add launcherPage.hide() API.

chrome/browser/extensions/api/launcher_page/launcher_page_api.h

 // 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_EXTENSIONS_API_LAUNCHER_PAGE_LAUNCHER_PAGE_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_LAUNCHER_PAGE_LAUNCHER_PAGE_API_H_
 
 #include "chrome/browser/extensions/chrome_extension_function.h"
 #include "extensions/browser/browser_context_keyed_api_factory.h"
 
@@ skipping 47 matching lines @@
 
  protected:
   ~LauncherPageShowFunction() override {}
 
   ResponseAction Run() override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(LauncherPageShowFunction);
 };
 
+class LauncherPageHideFunction : public UIThreadExtensionFunction {
+ public:
+  DECLARE_EXTENSION_FUNCTION("launcherPage.hide", LAUNCHERPAGE_HIDE);
+
+  LauncherPageHideFunction();
+
+ protected:
+  ~LauncherPageHideFunction() override {}
+
+  ResponseAction Run() override;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(LauncherPageHideFunction);
+};
+
 class LauncherPageSetEnabledFunction : public UIThreadExtensionFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("launcherPage.setEnabled",
                              LAUNCHERPAGE_SETENABLED);
 
   LauncherPageSetEnabledFunction();
 
  protected:
   ~LauncherPageSetEnabledFunction() override {}
 
   ResponseAction Run() override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(LauncherPageSetEnabledFunction);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_LAUNCHER_PAGE_LAUNCHER_PAGE_API_H_