Move path functions from file_util to FilePath object.

content/browser/storage_partition_impl_map.cc

Index: content/browser/storage_partition_impl_map.cc
diff --git a/content/browser/storage_partition_impl_map.cc b/content/browser/storage_partition_impl_map.cc
index 16111cf876c410588695f487738375e8775890c8..5156c3c0d7b7f410153c04586b9161e2a6285cdc 100644
--- a/content/browser/storage_partition_impl_map.cc
+++ b/content/browser/storage_partition_impl_map.cc
@@ -254,7 +254,7 @@ void BlockingObliteratePath(
     const std::vector<base::FilePath>& paths_to_keep,
     const scoped_refptr<base::TaskRunner>& closure_runner,
     const base::Closure& on_gc_required) {
-  // Early exit required because file_util::AbsolutePath() will fail on POSIX
+  // Early exit required because AsAbsolute() will fail on POSIX
   // if |unnormalized_root| does not exist. This is safe because there is
   // nothing to do in this situation anwyays.
   if (!file_util::PathExists(unnormalized_root)) {
@@ -263,12 +263,12 @@ void BlockingObliteratePath(
 
   // Never try to obliterate things outside of the browser context root or the
   // browser context root itself. Die hard.
-  base::FilePath root = unnormalized_root;
-  base::FilePath browser_context_root = unnormalized_browser_context_root;
-  CHECK(file_util::AbsolutePath(&root));
-  CHECK(file_util::AbsolutePath(&browser_context_root));
-  CHECK(file_util::ContainsPath(browser_context_root, root) &&
-        browser_context_root != root);
+  base::FilePath root = unnormalized_root.AsAbsolute();
+  base::FilePath browser_context_root =
+      unnormalized_browser_context_root.AsAbsolute();
+  CHECK(!root.empty());
+  CHECK(!browser_context_root.empty());
+  CHECK(browser_context_root.IsParent(root) && browser_context_root != root);
 
   // Reduce |paths_to_keep| set to those under the root and actually on disk.
   std::vector<base::FilePath> valid_paths_to_keep;