Move path functions from file_util to FilePath object.

chrome/test/gpu/gpu_pixel_browsertest.cc

Index: chrome/test/gpu/gpu_pixel_browsertest.cc
diff --git a/chrome/test/gpu/gpu_pixel_browsertest.cc b/chrome/test/gpu/gpu_pixel_browsertest.cc
index 82972a08c20a2a84b22f14e8584fdd460c98ca84..17527131ebc982c081afd7b4a0bbf37b984298e4 100644
--- a/chrome/test/gpu/gpu_pixel_browsertest.cc
+++ b/chrome/test/gpu/gpu_pixel_browsertest.cc
@@ -58,8 +58,8 @@ const char kReferenceDir[] = "reference-dir";
 // should have been encoded using |gfx::PNGCodec::Encode|.
 bool ReadPNGFile(const base::FilePath& file_path, SkBitmap* bitmap) {
   DCHECK(bitmap);
-  base::FilePath abs_path(file_path);
-  if (!file_util::AbsolutePath(&abs_path))
+  base::FilePath abs_path = base::MakeAbsoluteFilePath(file_path);
+  if (abs_path.empty())
     return false;
 
   std::string png_data;