Deinline even more destructors.

chrome/browser/dom_ui/history2_ui.h

 // Copyright (c) 2010 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_BROWSER_DOM_UI_HISTORY2_UI_H_
 #define CHROME_BROWSER_DOM_UI_HISTORY2_UI_H_
 #pragma once
 
 #include <string>
 
@@ skipping 12 matching lines @@
 class HistoryUIHTMLSource2 : public ChromeURLDataManager::DataSource {
  public:
   HistoryUIHTMLSource2();
 
   // Called when the network layer has requested a resource underneath
   // the path we registered.
   virtual void StartDataRequest(const std::string& path,
                                 bool is_off_the_record,
                                 int request_id);
 
-  virtual std::string GetMimeType(const std::string&) const {
-    return "text/html";
-  }
+  virtual std::string GetMimeType(const std::string&) const;
 
  private:
   ~HistoryUIHTMLSource2() {}
 
   DISALLOW_COPY_AND_ASSIGN(HistoryUIHTMLSource2);
 };
 
 // The handler for Javascript messages related to the "history" view.
 class BrowsingHistoryHandler2 : public DOMMessageHandler,
                                 public NotificationObserver {
@@ skipping 59 matching lines @@
   // Return the URL for a given search term.
   static const GURL GetHistoryURLWithSearchText(const string16& text);
 
   static RefCountedMemory* GetFaviconResourceBytes();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(HistoryUI2);
 };
 
 #endif  // CHROME_BROWSER_DOM_UI_HISTORY2_UI_H_