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

chrome/browser/safe_browsing/safe_browsing_blocking_page.cc

Index: chrome/browser/safe_browsing/safe_browsing_blocking_page.cc
diff --git a/chrome/browser/safe_browsing/safe_browsing_blocking_page.cc b/chrome/browser/safe_browsing/safe_browsing_blocking_page.cc
index 71f930b0d9a862e4abedc0dc617c01a3e0cdd3b2..ac6b7981bd8a767a40f878fcf60471b4de8604cb 100644
--- a/chrome/browser/safe_browsing/safe_browsing_blocking_page.cc
+++ b/chrome/browser/safe_browsing/safe_browsing_blocking_page.cc
@@ -28,6 +28,7 @@
 #include "chrome/browser/safe_browsing/malware_details.h"
 #include "chrome/browser/safe_browsing/ui_manager.h"
 #include "chrome/browser/tab_contents/tab_util.h"
+#include "chrome/browser/ui/zoom/zoom_controller.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
@@ -39,6 +40,7 @@
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/user_metrics.h"
 #include "content/public/browser/web_contents.h"
+#include "content/public/common/renderer_preferences.h"
 #include "grit/browser_resources.h"
 #include "net/base/escape.h"
 #include "ui/base/l10n/l10n_util.h"
@@ -398,7 +400,8 @@ void SafeBrowsingBlockingPage::OverrideRendererPrefs(
       content::RendererPreferences* prefs) {
   Profile* profile = Profile::FromBrowserContext(
       web_contents_->GetBrowserContext());
-  renderer_preferences_util::UpdateFromSystemSettings(prefs, profile);
+  renderer_preferences_util::UpdateFromSystemSettings(
+      prefs, profile, web_contents_);
  }
 
 void SafeBrowsingBlockingPage::SetReportingPreference(bool report) {