Introduce ChromeZoomLevelPref, make zoom level prefs independent of profile prefs.

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 312 matching lines @@
 #endif
 extern const char kUseCustomChromeFrame[];
 extern const char kDefaultContentSettings[];
 extern const char kOverrideContentSettings[];
 extern const char kContentSettingsClearOnExitMigrated[];
 extern const char kContentSettingsVersion[];
 extern const char kContentSettingsPatternPairs[];
 extern const char kContentSettingsPluginWhitelist[];
 extern const char kBlockThirdPartyCookies[];
 extern const char kClearSiteDataOnExit[];
-extern const char kDefaultZoomLevel[];
-extern const char kPerHostZoomLevels[];
+extern const char kPartitionDefaultZoomLevel[];
+extern const char kDefaultZoomLevelDeprecated[];
+extern const char kPartitionPerHostZoomLevels[];
+extern const char kPerHostZoomLevelsDeprecated[];
 extern const char kAutofillDialogAutofillDefault[];
 extern const char kAutofillDialogPayWithoutWallet[];
 extern const char kAutofillDialogWalletLocationAcceptance[];
 extern const char kAutofillDialogSaveData[];
 extern const char kAutofillDialogWalletShippingSameAsBilling[];
 extern const char kAutofillGeneratedCardBubbleTimesShown[];
 extern const char kAutofillDialogDefaults[];
 
 extern const char kPinnedTabs[];
 
@@ skipping 470 matching lines @@
 
 extern const char kQuickCheckEnabled[];
 extern const char kBrowserGuestModeEnabled[];
 extern const char kBrowserAddPersonEnabled[];
 
 extern const char kEasyUnlockHardlockState[];
 
 }  // namespace prefs
 
 #endif  // CHROME_COMMON_PREF_NAMES_H_