Remember zoom on a per-host basis....

chrome/test/testing_profile.h

 // Copyright (c) 2009 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.
 
 #ifndef CHROME_TEST_TESTING_PROFILE_H_
 #define CHROME_TEST_TESTING_PROFILE_H_
 
 #include "base/base_paths.h"
 #include "base/file_util.h"
 #include "base/path_service.h"
@@ skipping 128 matching lines @@
     InitThemes();
     return theme_provider_.get();
   }
   virtual URLRequestContextGetter* GetRequestContext() { return NULL; }
   virtual URLRequestContextGetter* GetRequestContextForMedia() { return NULL; }
   virtual URLRequestContextGetter* GetRequestContextForExtensions() {
       return NULL;
   }
   virtual net::SSLConfigService* GetSSLConfigService() { return NULL; }
   virtual BlacklistManager* GetBlacklistManager() { return NULL; }
+  virtual HostZoomMap* GetHostZoomMap() { return NULL; }
   void set_session_service(SessionService* session_service) {
     session_service_ = session_service;
   }
   virtual SessionService* GetSessionService() { return session_service_.get(); }
   virtual void ShutdownSessionService() {}
   virtual bool HasSessionService() const {
     return (session_service_.get() != NULL);
   }
   virtual std::wstring GetName() { return std::wstring(); }
   virtual void SetName(const std::wstring& name) {}
@@ skipping 96 matching lines @@
 
   virtual ProfileId GetRuntimeId() {
     return original_profile_->GetRuntimeId();
   }
 
  protected:
   Profile* original_profile_;
 };
 
 #endif  // CHROME_TEST_TESTING_PROFILE_H_