[chromeos] Remove dependencies of StatisticsProvider on chrome.

chrome/common/chrome_constants.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.
 
 // A handful of resource-like constants related to the Chrome application.
 
 #ifndef CHROME_COMMON_CHROME_CONSTANTS_H_
 #define CHROME_COMMON_CHROME_CONSTANTS_H_
 
 #include "base/files/file_path.h"
@@ skipping 75 matching lines @@
 extern const base::FilePath::CharType kThumbnailsFilename[];
 extern const base::FilePath::CharType kTopSitesFilename[];
 extern const base::FilePath::CharType kWebAppDirname[];
 
 // File name of the Pepper Flash plugin on different platforms.
 extern const base::FilePath::CharType kPepperFlashPluginFilename[];
 
 // directory names
 extern const wchar_t kUserDataDirname[];
 
-#if defined(OS_CHROMEOS)
-extern const base::FilePath::CharType kDriveCacheDirname[];
-extern const char kOemDeviceRequisitionKey[];
-extern const char kOemIsEnterpriseManagedKey[];
-extern const char kOemCanExitEnterpriseEnrollmentKey[];
-extern const char kOemKeyboardDrivenOobeKey[];
-#endif  // defined(OS_CHROMEOS)
-
 extern const bool kRecordModeEnabled;
 
 // The language code used when the language of a page could not be detected.
 // (Matches what the CLD -Compact Language Detection- library reports.)
 extern const char* const kUnknownLanguageCode;
 
 // If another javascript message box is displayed within
 // kJavascriptMessageExpectedDelay of a previous javascript message box being
 // dismissed, display an option to suppress future message boxes from this
 // contents.
@@ skipping 26 matching lines @@
 // Used by Metro Chrome to get information about the current tab.
 extern const wchar_t kMetroGetCurrentTabInfoMessage[];
 // Used by Metro Chrome to store activation state.
 extern const wchar_t kMetroRegistryPath[];
 extern const wchar_t kLaunchModeValue[];
 #endif
 
 }  // namespace chrome
 
 #endif  // CHROME_COMMON_CHROME_CONSTANTS_H_