Get rid of the following dependencies from content:

content/renderer/content_renderer_client.h

Index: content/renderer/content_renderer_client.h
===================================================================
--- content/renderer/content_renderer_client.h	(revision 88923)
+++ content/renderer/content_renderer_client.h	(working copy)
@@ -83,9 +83,6 @@
                                const GURL& url,
                                GURL* new_url);
 
-  // Returns the file path where the media library files are.
-  virtual FilePath GetMediaLibraryPath();
-
   // Whether to pump events when sending sync cookie messages.  Needed if the
   // embedder can potentiall put up a modal dialog on the UI thread as a result.
   virtual bool ShouldPumpEventsDuringCookieMessage();