Move more file_util functions to base namespace.

content/test/plugin/plugin_geturl_test.cc

Index: content/test/plugin/plugin_geturl_test.cc
diff --git a/content/test/plugin/plugin_geturl_test.cc b/content/test/plugin/plugin_geturl_test.cc
index 8bc62e03952495584cca5568ef78e12ff4fb72fc..c9b344de3ad304fa48a3fbd76ff91ab8ea47173c 100644
--- a/content/test/plugin/plugin_geturl_test.cc
+++ b/content/test/plugin/plugin_geturl_test.cc
@@ -212,7 +212,7 @@ NPError PluginGetURLTest::NewStream(NPMIMEType type, NPStream* stream,
         base::FilePath path = base::FilePath(filename);
 #endif
 
-        test_file_ = file_util::OpenFile(path, "r");
+        test_file_ = base::OpenFile(path, "r");
         if (!test_file_) {
           SetError("Could not open source file");
         }
@@ -356,7 +356,7 @@ NPError PluginGetURLTest::DestroyStream(NPStream *stream, NPError reason) {
         size_t bytes = fread(read_buffer, 1, sizeof(read_buffer), test_file_);
         if (bytes != 0)
           SetError("Data and source mismatch on length");
-        file_util::CloseFile(test_file_);
+        base::CloseFile(test_file_);
       }
       break;
     default: