Add a policy to hide the Web Store on new tabs.

chrome/common/pref_names.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.
 
 // Constants for the names of various preferences, for easier changing.
 
 #ifndef CHROME_COMMON_PREF_NAMES_H_
 #define CHROME_COMMON_PREF_NAMES_H_
 
 #include <stddef.h>
@@ skipping 176 matching lines @@
 extern const char kDisabledSchemes[];
 extern const char kUrlBlacklist[];
 extern const char kUrlWhitelist[];
 extern const char kInstantConfirmDialogShown[];
 extern const char kInstantEnabled[];
 extern const char kInstantExtendedEnabled[];
 extern const char kInstantUIZeroSuggestUrlPrefix[];
 extern const char kMultipleProfilePrefMigration[];
 extern const char kNetworkPredictionEnabled[];
 extern const char kDefaultAppsInstallState[];
+extern const char kHideWebStoreIcon[];
 #if defined(OS_CHROMEOS)
 extern const char kAudioMute[];
 extern const char kAudioVolumePercent[];
 extern const char kTapToClickEnabled[];
 extern const char kTapDraggingEnabled[];
 extern const char kEnableTouchpadThreeFingerClick[];
 extern const char kEnableTouchpadThreeFingerSwipe[];
 extern const char kNaturalScroll[];
 extern const char kPrimaryMouseButtonRight[];
 extern const char kMouseSensitivity[];
@@ skipping 650 matching lines @@
 extern const char kRLZDisabled[];
 #endif
 
 #if defined(ENABLE_APP_LIST)
 extern const char kAppListProfile[];
 #endif
 
 }  // namespace prefs
 
 #endif  // CHROME_COMMON_PREF_NAMES_H_