Fix an invalid DCHECK for media request context

chrome/browser/net/chrome_url_request_context.h

Index: chrome/browser/net/chrome_url_request_context.h
diff --git a/chrome/browser/net/chrome_url_request_context.h b/chrome/browser/net/chrome_url_request_context.h
index df8cc9b6544b0d69cf2167e886347a74337f70db..2215199ab789e0cd27d306b55669f222f3db387e 100644
--- a/chrome/browser/net/chrome_url_request_context.h
+++ b/chrome/browser/net/chrome_url_request_context.h
@@ -61,6 +61,12 @@ class ChromeURLRequestContext : public URLRequestContext,
   // expected to be called on the UI thread.
   ChromeURLRequestContext(Profile* profile);
 
+  // Create a request context for media resources from a regular request
+  // context. This helper method is called from CreateOriginalForMedia and
+  // CreateOffTheRecordForMedia.
+  static ChromeURLRequestContext* CreateRequestContextForMedia(Profile* profile,
+      const FilePath& disk_cache_path);
+
   // NotificationObserver implementation.
   virtual void Observe(NotificationType type,
                        const NotificationSource& source,