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

chrome/browser/renderer_preferences_util.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/renderer_preferences_util.h"
 
 #include "base/macros.h"
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/pref_names.h"
@@ skipping 16 matching lines @@
 
 namespace renderer_preferences_util {
 
 void UpdateFromSystemSettings(
     content::RendererPreferences* prefs, Profile* profile) {
   const PrefService* pref_service = profile->GetPrefs();
   prefs->accept_languages = pref_service->GetString(prefs::kAcceptLanguages);
   prefs->enable_referrers = pref_service->GetBoolean(prefs::kEnableReferrers);
   prefs->enable_do_not_track =
       pref_service->GetBoolean(prefs::kEnableDoNotTrack);
-  prefs->default_zoom_level = pref_service->GetDouble(prefs::kDefaultZoomLevel);
 
 #if defined(USE_DEFAULT_RENDER_THEME)
   prefs->focus_ring_color = SkColorSetRGB(0x4D, 0x90, 0xFE);
 
 #if defined(OS_CHROMEOS)
   // This color is 0x544d90fe modulated with 0xffffff.
   prefs->active_selection_bg_color = SkColorSetRGB(0xCB, 0xE4, 0xFA);
   prefs->active_selection_fg_color = SK_ColorBLACK;
   prefs->inactive_selection_bg_color = SkColorSetRGB(0xEA, 0xEA, 0xEA);
   prefs->inactive_selection_fg_color = SK_ColorBLACK;
@@ skipping 50 matching lines @@
   prefs->subpixel_rendering = params.subpixel_rendering;
 #endif
 
 #if !defined(OS_MACOSX)
   prefs->plugin_fullscreen_allowed =
       pref_service->GetBoolean(prefs::kFullscreenAllowed);
 #endif
 }
 
 }  // namespace renderer_preferences_util