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

chrome/common/chrome_constants.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/common/chrome_constants.h"
 
 #include "base/files/file_path.h"
 
 #define FPL FILE_PATH_LITERAL
 
@@ skipping 178 matching lines @@
 const base::FilePath::CharType kSingletonSocketFilename[] =
     FPL("SingletonSocket");
 const base::FilePath::CharType kSupervisedUserSettingsFilename[] =
     FPL("Managed Mode Settings");
 const base::FilePath::CharType kSyncCredentialsFilename[] =
     FPL("Sync Credentials");
 const base::FilePath::CharType kThemePackFilename[] = FPL("Cached Theme.pak");
 const base::FilePath::CharType kThumbnailsFilename[] = FPL("Thumbnails");
 const base::FilePath::CharType kTopSitesFilename[] = FPL("Top Sites");
 const base::FilePath::CharType kWebAppDirname[] = FPL("Web Applications");
+const base::FilePath::CharType kZoomLevelPreferencesFilename[] =
+    FPL("ZoomLevelPreferences");
 
 // File name of the Pepper Flash plugin on different platforms.
 const base::FilePath::CharType kPepperFlashPluginFilename[] =
 #if defined(OS_MACOSX)
     FPL("PepperFlashPlayer.plugin");
 #elif defined(OS_WIN)
     FPL("pepflashplayer.dll");
 #else  // OS_LINUX, etc.
     FPL("libpepflashplayer.so");
 #endif
@@ skipping 57 matching lines @@
 const char kApplicationClientIDStringForAVScanning[] =
     "2676A9A2-D919-4FEE-9187-152100393AB2";
 
 #if defined(OS_ANDROID)
 const size_t kMaxMetaTagAttributeLength = 2000;
 #endif
 
 }  // namespace chrome
 
 #undef FPL