More filesystem cleanup: convert URL-encoded-as-FilePath to actual URL, where

content/common/file_system/webfilewriter_impl.h

Index: content/common/file_system/webfilewriter_impl.h
===================================================================
--- content/common/file_system/webfilewriter_impl.h	(revision 81454)
+++ content/common/file_system/webfilewriter_impl.h	(working copy)
@@ -15,14 +15,13 @@
 class WebFileWriterImpl : public fileapi::WebFileWriterBase,
                           public base::SupportsWeakPtr<WebFileWriterImpl> {
  public:
-  WebFileWriterImpl(
-      const WebKit::WebString& path, WebKit::WebFileWriterClient* client);
+  WebFileWriterImpl(const GURL& path, WebKit::WebFileWriterClient* client);
   virtual ~WebFileWriterImpl();
 
  protected:
   // WebFileWriterBase overrides
-  virtual void DoTruncate(const FilePath& path, int64 offset);
-  virtual void DoWrite(const FilePath& path, const GURL& blob_url,
+  virtual void DoTruncate(const GURL& path, int64 offset);
+  virtual void DoWrite(const GURL& path, const GURL& blob_url,
                        int64 offset);
   virtual void DoCancel();