Move more file_util functions to base namespace.

content/common/gpu/client/gl_helper_benchmark.cc

Index: content/common/gpu/client/gl_helper_benchmark.cc
diff --git a/content/common/gpu/client/gl_helper_benchmark.cc b/content/common/gpu/client/gl_helper_benchmark.cc
index 43ce6b641e68875ef7b16c990fc6acb3009f80ba..f9385fdd8225df6328f815823ce156f108e95d68 100644
--- a/content/common/gpu/client/gl_helper_benchmark.cc
+++ b/content/common/gpu/client/gl_helper_benchmark.cc
@@ -102,11 +102,11 @@ class GLHelperTest : public testing::Test {
         std::vector<gfx::PNGCodec::Comment>(),
         &compressed));
     ASSERT_TRUE(compressed.size());
-    FILE* f = file_util::OpenFile(filename, "wb");
+    FILE* f = base::OpenFile(filename, "wb");
     ASSERT_TRUE(f);
     ASSERT_EQ(fwrite(&*compressed.begin(), 1, compressed.size(), f),
               compressed.size());
-    file_util::CloseFile(f);
+    base::CloseFile(f);
   }
 
   scoped_ptr<webkit::gpu::WebGraphicsContext3DInProcessCommandBufferImpl>