Add mimetypes on the "chrome-resource://" responses....

chrome/browser/dom_ui/new_tab_ui.h

 // Copyright (c) 2006-2008 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_NEW_TAB_UI_H__
 #define CHROME_BROWSER_DOM_UI_NEW_TAB_UI_H__
 
 #include "chrome/browser/bookmarks/bookmark_model.h"
 #include "chrome/browser/dom_ui/dom_ui_host.h"
 #include "chrome/browser/dom_ui/chrome_url_data_manager.h"
@@ skipping 18 matching lines @@
 // put here for clarity.
 
 class NewTabHTMLSource : public ChromeURLDataManager::DataSource {
  public:
   NewTabHTMLSource();
 
   // Called when the network layer has requested a resource underneath
   // the path we registered.
   virtual void StartDataRequest(const std::string& path, int request_id);
 
+  virtual std::string GetMimeType(const std::string&) const {
+    return "text/html";
+  }
+
   // Setters and getters for first_view.
   static void set_first_view(bool first_view) { first_view_ = first_view; }
   static bool first_view() { return first_view_; }
  private:
   // Whether this is the is the first viewing of the new tab page and
   // we think it is the user's startup page.
   static bool first_view_;
 
   DISALLOW_EVIL_CONSTRUCTORS(NewTabHTMLSource);
 };
 
 class IncognitoTabHTMLSource : public ChromeURLDataManager::DataSource {
  public:
   // Creates our datasource and sets our user message to a specific message
   // from our string bundle.
   IncognitoTabHTMLSource();
 
   // Called when the network layer has requested a resource underneath
   // the path we registered.
   virtual void StartDataRequest(const std::string& path, int request_id);
 
+  virtual std::string GetMimeType(const std::string&) const {
+    return "text/html";
+  }
+
  private:
   DISALLOW_EVIL_CONSTRUCTORS(IncognitoTabHTMLSource);
 };
 
 // ThumbnailSource is the gateway between network-level chrome-resource:
 // requests for thumbnails and the history backend that serves these.
 class ThumbnailSource : public ChromeURLDataManager::DataSource {
  public:
   explicit ThumbnailSource(Profile* profile);
 
   // Called when the network layer has requested a resource underneath
   // the path we registered.
   virtual void StartDataRequest(const std::string& path, int request_id);
 
+  virtual std::string GetMimeType(const std::string&) const {
+    // Rely on image decoder inferring the correct type.
+    return std::string();
+  }
+
   // Called when thumbnail data is available from the history backend.
   void OnThumbnailDataAvailable(
       HistoryService::Handle request_handle,
       scoped_refptr<RefCountedBytes> data);
 
  private:
   Profile* profile_;
   CancelableRequestConsumerT<int, 0> cancelable_consumer_;
 
   // Raw PNG representation of the thumbnail to show when the thumbnail
   // database doesn't have a thumbnail for a webpage.
   scoped_refptr<RefCountedBytes> default_thumbnail_;
 
   DISALLOW_EVIL_CONSTRUCTORS(ThumbnailSource);
 };
 
 // ThumbnailSource is the gateway between network-level chrome-resource:
 // requests for favicons and the history backend that serves these.
 class FavIconSource : public ChromeURLDataManager::DataSource {
  public:
   explicit FavIconSource(Profile* profile);
 
   // Called when the network layer has requested a resource underneath
   // the path we registered.
   virtual void StartDataRequest(const std::string& path, int request_id);
 
+  virtual std::string GetMimeType(const std::string&) const {
+    // Rely on image decoder inferring the correct type.
+    return std::string();
+  }
+
   // Called when favicon data is available from the history backend.
   void OnFavIconDataAvailable(
       HistoryService::Handle request_handle,
       bool know_favicon,
       scoped_refptr<RefCountedBytes> data,
       bool expired,
       GURL url);
 
  private:
   Profile* profile_;
@@ skipping 225 matching lines @@
 
   // A pointer to the handler for most visited.
   // Owned by the DOMUIHost.
   MostVisitedHandler* most_visited_handler_;
 
   DISALLOW_EVIL_CONSTRUCTORS(NewTabUIContents);
 };
 
 #endif  // CHROME_BROWSER_DOM_UI_NEW_TAB_UI_H__