Convert NaCl renderer-browser messages to mojo.

components/nacl/browser/pnacl_host_unittest.cc

Index: components/nacl/browser/pnacl_host_unittest.cc
diff --git a/components/nacl/browser/pnacl_host_unittest.cc b/components/nacl/browser/pnacl_host_unittest.cc
index 992f607c27305beeac66d978358eac12a308b8e3..5d08380e0078c69c5cf65d608c979caf2405e7eb 100644
--- a/components/nacl/browser/pnacl_host_unittest.cc
+++ b/components/nacl/browser/pnacl_host_unittest.cc
@@ -69,7 +69,7 @@ class PnaclHostTest : public testing::Test {
   // CallbackExpectMiss checks that the fd is valid and a miss is reported,
   // and also writes some data into the file, which is read back by
   // CallbackExpectHit
-  void CallbackExpectMiss(const base::File& file, bool is_hit) {
+  void CallbackExpectMiss(base::File file, bool is_hit) {
     EXPECT_FALSE(is_hit);
     ASSERT_TRUE(file.IsValid());
     base::File::Info info;
@@ -84,7 +84,7 @@ class PnaclHostTest : public testing::Test {
               static_cast<size_t>(mutable_file->Write(0, str, kBufferSize)));
     temp_callback_count_++;
   }
-  void CallbackExpectHit(const base::File& file, bool is_hit) {
+  void CallbackExpectHit(base::File file, bool is_hit) {
     EXPECT_TRUE(is_hit);
     ASSERT_TRUE(file.IsValid());
     base::File::Info info;