Move CrxFile, FileReader, ExtensionResource to src/extensions.

chrome/browser/extensions/crx_installer.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_CRX_INSTALLER_H_
 #define CHROME_BROWSER_EXTENSIONS_CRX_INSTALLER_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/files/file_path.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/version.h"
-#include "chrome/browser/extensions/crx_installer_error.h"
 #include "chrome/browser/extensions/extension_install_prompt.h"
 #include "chrome/browser/extensions/sandboxed_unpacker.h"
 #include "chrome/browser/extensions/webstore_installer.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/manifest.h"
 #include "chrome/common/web_apps.h"
 #include "sync/api/string_ordinal.h"
 
 class ExtensionService;
 class ExtensionServiceTest;
 class SkBitmap;
 
 namespace base {
 class SequencedTaskRunner;
 }
 
 namespace extensions {
+class CrxInstallerError;
 class ExtensionUpdaterTest;
 class RequirementsChecker;
 
 // This class installs a crx file into a profile.
 //
 // Installing a CRX is a multi-step process, including unpacking the crx,
 // validating it, prompting the user, and installing. Since many of these
 // steps must occur on the file thread, this class contains a copy of all data
 // necessary to do its job. (This also minimizes external dependencies for
 // easier testing).
@@ skipping 360 matching lines @@
   // Whether the update is initiated by the user from the extension settings
   // page.
   bool update_from_settings_page_;
 
   DISALLOW_COPY_AND_ASSIGN(CrxInstaller);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_CRX_INSTALLER_H_