Deinline even more destructors.

chrome/browser/dom_ui/dom_ui_screenshot_source.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_BROWSER_DOM_UI_DOM_UI_SCREENSHOT_SOURCE_H_
 #define CHROME_BROWSER_DOM_UI_DOM_UI_SCREENSHOT_SOURCE_H_
 
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/scoped_ptr.h"
 #include "chrome/browser/dom_ui/chrome_url_data_manager.h"
 #include "chrome/browser/dom_ui/html_dialog_ui.h"
 
 // ScreenshotSource is the data source that serves screenshots (saved
 // or current) to the bug report html ui
 class DOMUIScreenshotSource : public ChromeURLDataManager::DataSource {
  public:
   explicit DOMUIScreenshotSource(
       std::vector<unsigned char>* current_screenshot);
 
   // 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 {
-    // We need to explicitly return a mime type, otherwise if the user tries to
-    // drag the image they get no extension.
-    return "image/png";
-  }
+  virtual std::string GetMimeType(const std::string&) const;
 
   std::vector<unsigned char> GetScreenshot(const std::string& path);
 
  private:
   virtual ~DOMUIScreenshotSource();
 
 //  scoped_refptr<RefCountedBytes> current_screenshot_;
   std::vector<unsigned char> current_screenshot_;
   DISALLOW_COPY_AND_ASSIGN(DOMUIScreenshotSource);
 };
 
 #endif  // CHROME_BROWSER_DOM_UI_DOM_UI_SCREENSHOT_SOURCE_H_