Move test runner to a component

components/test_runner/mock_grammar_check.h

Index: components/test_runner/mock_grammar_check.h
diff --git a/content/shell/renderer/test_runner/mock_grammar_check.h b/components/test_runner/mock_grammar_check.h
similarity index 81%
rename from content/shell/renderer/test_runner/mock_grammar_check.h
rename to components/test_runner/mock_grammar_check.h
index 5bbd778ab267667bd246ac7f3f02245b3921c486..c567670d008288f284b1194fbcafcfa39955a214 100644
--- a/content/shell/renderer/test_runner/mock_grammar_check.h
+++ b/components/test_runner/mock_grammar_check.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CONTENT_SHELL_RENDERER_TEST_RUNNER_MOCK_GRAMMAR_CHECK_H_
-#define CONTENT_SHELL_RENDERER_TEST_RUNNER_MOCK_GRAMMAR_CHECK_H_
+#ifndef COMPONENTS_TEST_RUNNER_MOCK_GRAMMAR_CHECK_H_
+#define COMPONENTS_TEST_RUNNER_MOCK_GRAMMAR_CHECK_H_
 
 #include <vector>
 
@@ -27,4 +27,4 @@ class MockGrammarCheck {
 
 }  // namespace content
 
-#endif  // CONTENT_SHELL_RENDERER_TEST_RUNNER_MOCK_GRAMMAR_CHECK_H_
+#endif  // COMPONENTS_TEST_RUNNER_MOCK_GRAMMAR_CHECK_H_