Move OpenItem/ShowItemInFolder from ContentBrowserClient to DownloadManagerDelegate

content/browser/download/download_manager_impl_unittest.cc

Index: content/browser/download/download_manager_impl_unittest.cc
diff --git a/content/browser/download/download_manager_impl_unittest.cc b/content/browser/download/download_manager_impl_unittest.cc
index b1c5ac6de71b53b5d887d20feecfa3ece0c72256..754fdc1e1d08428b4545746cde6ed0a1631157d8 100644
--- a/content/browser/download/download_manager_impl_unittest.cc
+++ b/content/browser/download/download_manager_impl_unittest.cc
@@ -164,7 +164,6 @@ class MockDownloadItemImpl : public DownloadItemImpl {
   MOCK_CONST_METHOD0(GetFileNameToReportUser, FilePath());
   MOCK_METHOD1(SetDisplayName, void(const FilePath&));
   MOCK_CONST_METHOD0(GetUserVerifiedFilePath, FilePath());
-  MOCK_METHOD0(MockDownloadOpenForTesting, void());
   // May be called when vlog is on.
   virtual std::string DebugString(bool verbose) const OVERRIDE { return ""; }
 };