Add setting to isolate zoom changes by default.

chrome/browser/profiles/profile.cc

 // 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.
 
 #include "chrome/browser/profiles/profile.h"
 
 #include <string>
 
 #include "build/build_config.h"
 #include "chrome/browser/chrome_notification_types.h"
@@ skipping 100 matching lines @@
   // TODO(skare): Remove or rename ENABLE_GOOGLE_NOW: http://crbug.com/459827.
   registry->RegisterBooleanPref(prefs::kGoogleNowLauncherEnabled, true);
   registry->RegisterBooleanPref(prefs::kDisableExtensions, false);
 #if BUILDFLAG(ENABLE_EXTENSIONS)
   registry->RegisterBooleanPref(extensions::pref_names::kAlertsInitialized,
                                 false);
 #endif
   registry->RegisterStringPref(prefs::kSelectFileLastDirectory, std::string());
   registry->RegisterDictionaryPref(prefs::kPartitionDefaultZoomLevel);
   registry->RegisterDictionaryPref(prefs::kPartitionPerHostZoomLevels);
+  registry->RegisterDictionaryPref(prefs::kPartitionZoomScopeIsPerOrigin);
   registry->RegisterStringPref(prefs::kDefaultApps, "install");
   registry->RegisterBooleanPref(prefs::kSpeechRecognitionFilterProfanities,
                                 true);
   registry->RegisterIntegerPref(prefs::kProfileIconVersion, 0);
   registry->RegisterBooleanPref(prefs::kAllowDinosaurEasterEgg, true);
 #if defined(OS_CHROMEOS)
   // TODO(dilmah): For OS_CHROMEOS we maintain kApplicationLocale in both
   // local state and user's profile.  For other platforms we maintain
   // kApplicationLocale only in local state.
   // In the future we may want to maintain kApplicationLocale
@@ skipping 111 matching lines @@
   if (a->IsSameProfile(b))
     return false;
   return a->GetOriginalProfile() < b->GetOriginalProfile();
 }
 
 double Profile::GetDefaultZoomLevelForProfile() {
   return GetDefaultStoragePartition(this)
       ->GetHostZoomMap()
       ->GetDefaultZoomLevel();
 }