Move file_util::Delete to the base namespace

content/browser/gpu/gpu_pixel_browsertest.cc

Index: content/browser/gpu/gpu_pixel_browsertest.cc
diff --git a/content/browser/gpu/gpu_pixel_browsertest.cc b/content/browser/gpu/gpu_pixel_browsertest.cc
index e8a93cee42f0d501714ad055341127b70c300a18..f91e38b147eb2100ad74442ab3df945a0db8e70b 100644
--- a/content/browser/gpu/gpu_pixel_browsertest.cc
+++ b/content/browser/gpu/gpu_pixel_browsertest.cc
@@ -259,7 +259,7 @@ class GpuPixelBrowserTest : public ContentBrowserTest {
           LOG(ERROR) << "Can't save revision file to: "
                      << rev_path.value();
           rt = false;
-          file_util::Delete(img_path, false);
+          base::Delete(img_path, false);
         } else {
           LOG(INFO) << "Saved revision file to: "
                     << rev_path.value();
@@ -429,7 +429,7 @@ class GpuPixelBrowserTest : public ContentBrowserTest {
     }
     ref_img_revision_ = max_revision;
     for (size_t i = 0; i < outdated_revs.size(); ++i)
-      file_util::Delete(outdated_revs[i], false);
+      base::Delete(outdated_revs[i], false);
   }
 
   DISALLOW_COPY_AND_ASSIGN(GpuPixelBrowserTest);