Add utility method for WebString to base::FilePath conversion

content/renderer/pepper/url_response_info_util.cc

Index: content/renderer/pepper/url_response_info_util.cc
diff --git a/content/renderer/pepper/url_response_info_util.cc b/content/renderer/pepper/url_response_info_util.cc
index d657800330fc3918cb62922a80839101dfe66251..723e6579afb681c9aaa400ae233e0e191343d7e7 100644
--- a/content/renderer/pepper/url_response_info_util.cc
+++ b/content/renderer/pepper/url_response_info_util.cc
@@ -17,6 +17,7 @@
 #include "ipc/ipc_message.h"
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ppapi/shared_impl/url_response_info_data.h"
+#include "third_party/WebKit/public/platform/FilePathConversion.h"
 #include "third_party/WebKit/public/platform/WebCString.h"
 #include "third_party/WebKit/public/platform/WebHTTPHeaderVisitor.h"
 #include "third_party/WebKit/public/platform/WebString.h"
@@ -91,7 +92,7 @@ void DataFromWebURLResponse(RendererPpapiHostImpl* host_impl,
 
   WebString file_path = response.downloadFilePath();
   if (!file_path.isEmpty()) {
-    base::FilePath external_path = base::FilePath::FromUTF16Unsafe(file_path);
+    base::FilePath external_path = blink::WebStringToFilePath(file_path);
     // TODO(teravest): Write a utility function to create resource hosts in the
     // renderer and browser.
     PepperFileRefRendererHost* renderer_host =