Use base namespace for FilePath in content/browser

content/browser/download/file_metadata_unittest_linux.cc

Index: content/browser/download/file_metadata_unittest_linux.cc
diff --git a/content/browser/download/file_metadata_unittest_linux.cc b/content/browser/download/file_metadata_unittest_linux.cc
index 4759dfa652ab0d532af09845d9b257905a7a4504..5a58e1ac69df2da1aa6d2a1ac69eac64a935169b 100644
--- a/content/browser/download/file_metadata_unittest_linux.cc
+++ b/content/browser/download/file_metadata_unittest_linux.cc
@@ -32,7 +32,7 @@ class FileMetadataLinuxTest : public testing::Test {
       : source_url_("http://www.source.com"),
         referrer_url_("http://www.referrer.com") {}
 
-  const FilePath& test_file() const {
+  const base::FilePath& test_file() const {
     return test_file_;
   }
 
@@ -105,7 +105,7 @@ class FileMetadataLinuxTest : public testing::Test {
 
  private:
   base::ScopedTempDir temp_dir_;
-  FilePath test_file_;
+  base::FilePath test_file_;
   GURL source_url_;
   GURL referrer_url_;
   bool is_xattr_supported_;