Linux: Support the --class argument (Reland)

chrome/browser/shell_integration_linux_unittest.cc

 // Copyright 2013 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.
 
 #include "chrome/browser/shell_integration_linux.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <cstdlib>
@@ skipping 636 matching lines @@
   };
 
   for (size_t i = 0; i < arraysize(test_cases); i++) {
     SCOPED_TRACE(i);
     EXPECT_EQ(test_cases[i].expected_output,
               GetDirectoryFileContents(base::ASCIIToUTF16(test_cases[i].title),
                                        test_cases[i].icon_name));
   }
 }
 
+TEST(ShellIntegrationTest, WmClass) {
+  base::CommandLine command_line((base::FilePath()));
+  EXPECT_EQ("foo", internal::GetProgramClassName(command_line, "foo.desktop"));
+  EXPECT_EQ("Foo", internal::GetProgramClassClass(command_line, "foo.desktop"));
+
+  command_line.AppendSwitchASCII("class", "baR");
+  EXPECT_EQ("foo", internal::GetProgramClassName(command_line, "foo.desktop"));
+  EXPECT_EQ("baR", internal::GetProgramClassClass(command_line, "foo.desktop"));
+
+  command_line = base::CommandLine(base::FilePath());
+  command_line.AppendSwitchASCII("user-data-dir", "/tmp/baz");
+  EXPECT_EQ("foo (/tmp/baz)",
+            internal::GetProgramClassName(command_line, "foo.desktop"));
+  EXPECT_EQ("Foo", internal::GetProgramClassClass(command_line, "foo.desktop"));
+}
+
 }  // namespace shell_integration_linux