prune down content_dll change to just the CONTENT_EXPORTS

content/browser/browsing_instance.h

 // Copyright (c) 2011 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 CONTENT_BROWSER_BROWSING_INSTANCE_H_
 #define CONTENT_BROWSER_BROWSING_INSTANCE_H_
 #pragma once
 
 #include "base/hash_tables.h"
 #include "base/memory/ref_counted.h"
+#include "content/common/content_export.h"
 
 class GURL;
 class SiteInstance;
 
 namespace content {
 class BrowserContext;
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 //
@@ skipping 27 matching lines @@
 // have references to it.  Because both classes are RefCounted, they do not
 // need to be manually deleted.
 //
 // Currently, the BrowsingInstance class is not visible outside of the
 // SiteInstance class.  To get a new SiteInstance that is part of the same
 // BrowsingInstance, use SiteInstance::GetRelatedSiteInstance.  Because of
 // this, BrowsingInstances and SiteInstances are tested together in
 // site_instance_unittest.cc.
 //
 ///////////////////////////////////////////////////////////////////////////////
-class BrowsingInstance : public base::RefCounted<BrowsingInstance> {
+class CONTENT_EXPORT BrowsingInstance
+    : public base::RefCounted<BrowsingInstance> {
  public:
   // Create a new BrowsingInstance.
   explicit BrowsingInstance(content::BrowserContext* context);
 
   // Returns whether the process-per-site model is in use (globally or just for
   // the given url), in which case we should ensure there is only one
   // SiteInstance per site for the entire browser context, not just for this
   // BrowsingInstance.
   virtual bool ShouldUseProcessPerSite(const GURL& url);
 
@@ skipping 60 matching lines @@
   // This field is only used if we are not using process-per-site.
   SiteInstanceMap site_instance_map_;
 
   // Global map of BrowserContext to SiteInstanceMap, for process-per-site.
   static ContextSiteInstanceMap context_site_instance_map_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowsingInstance);
 };
 
 #endif  // CONTENT_BROWSER_BROWSING_INSTANCE_H_