Mac/clang: First pass over unit_tests

chrome/browser/cocoa/download_util_mac_unittest.mm

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Download utility test for Mac OS X.
 
 #include "base/path_service.h"
 #include "base/sys_string_conversions.h"
 #import "chrome/browser/cocoa/cocoa_test_helper.h"
 #import "chrome/browser/cocoa/download_util_mac.h"
 #include "chrome/common/chrome_paths.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 
 namespace {
 
 class DownloadUtilTest : public CocoaTest {
  public:
   DownloadUtilTest() {
     pasteboard_ = [NSPasteboard pasteboardWithUniqueName];
   }
 
   virtual ~DownloadUtilTest() {
     [pasteboard_ releaseGlobally];
   }
 
-  const NSPasteboard* const pasteboard() { return pasteboard_; }
+  NSPasteboard* const pasteboard() { return pasteboard_; }
 
  private:
   NSPasteboard* pasteboard_;
 };
 
 // Ensure adding files to the pasteboard methods works as expected.
 TEST_F(DownloadUtilTest, AddFileToPasteboardTest) {
   // Get a download test file for addition to the pasteboard.
   FilePath testPath;
   ASSERT_TRUE(PathService::Get(chrome::DIR_TEST_DATA, &testPath));
@@ skipping 10 matching lines @@
 
   // Ensure the path is what we expect.
   NSArray* files = [pasteboard() propertyListForType:NSFilenamesPboardType];
   ASSERT_TRUE(files != nil);
   NSString* expectedPath = [files objectAtIndex:0];
   NSString* realPath = base::SysWideToNSString(testPath.ToWStringHack());
   EXPECT_TRUE([expectedPath isEqualToString:realPath]);
 }
 
 }  // namespace