Fix unit_tests on Mac by renaming the MAc test name for DownloadUtilMacTest.

chrome/browser/cocoa/download_util_mac_unittest.mm

Index: chrome/browser/cocoa/download_util_mac_unittest.mm
diff --git a/chrome/browser/cocoa/download_util_mac_unittest.mm b/chrome/browser/cocoa/download_util_mac_unittest.mm
index 8a3a90c8b3ee7d895cafadc60d7d09c651b3c48f..3fb98d277b9c72c0703f6f4c50712624d16cfd98 100644
--- a/chrome/browser/cocoa/download_util_mac_unittest.mm
+++ b/chrome/browser/cocoa/download_util_mac_unittest.mm
@@ -14,13 +14,13 @@
 
 namespace {
 
-class DownloadUtilTest : public CocoaTest {
+class DownloadUtilMacTest : public CocoaTest {
  public:
-  DownloadUtilTest() {
+  DownloadUtilMacTest() {
     pasteboard_ = [NSPasteboard pasteboardWithUniqueName];
   }
 
-  virtual ~DownloadUtilTest() {
+  virtual ~DownloadUtilMacTest() {
     [pasteboard_ releaseGlobally];
   }
 
@@ -31,7 +31,7 @@ class DownloadUtilTest : public CocoaTest {
 };
 
 // Ensure adding files to the pasteboard methods works as expected.
-TEST_F(DownloadUtilTest, AddFileToPasteboardTest) {
+TEST_F(DownloadUtilMacTest, AddFileToPasteboardTest) {
   // Get a download test file for addition to the pasteboard.
   FilePath testPath;
   ASSERT_TRUE(PathService::Get(chrome::DIR_TEST_DATA, &testPath));