Move the unit tests files side-by-side with the corresponding .cc files.

components/update_client/component_patcher_unittest.h

Index: components/update_client/component_patcher_unittest.h
diff --git a/components/update_client/test/component_patcher_unittest.h b/components/update_client/component_patcher_unittest.h
similarity index 84%
rename from components/update_client/test/component_patcher_unittest.h
rename to components/update_client/component_patcher_unittest.h
index 2fcd5f5a65dbbdf8fbaa98072a33974ecb3a44d5..8b3a7975d6b74f15940732939b878359d0c81fff 100644
--- a/components/update_client/test/component_patcher_unittest.h
+++ b/components/update_client/component_patcher_unittest.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 COMPONENTS_UPDATE_CLIENT_TEST_COMPONENT_PATCHER_UNITTEST_H_
-#define COMPONENTS_UPDATE_CLIENT_TEST_COMPONENT_PATCHER_UNITTEST_H_
+#ifndef COMPONENTS_UPDATE_CLIENT_COMPONENT_PATCHER_UNITTEST_H_
+#define COMPONENTS_UPDATE_CLIENT_COMPONENT_PATCHER_UNITTEST_H_
 
 #include "base/files/file_path.h"
 #include "base/files/scoped_temp_dir.h"
@@ -39,4 +39,4 @@ class ComponentPatcherOperationTest : public testing::Test {
 
 }  // namespace update_client
 
-#endif  // COMPONENTS_UPDATE_CLIENT_TEST_COMPONENT_PATCHER_UNITTEST_H_
+#endif  // COMPONENTS_UPDATE_CLIENT_COMPONENT_PATCHER_UNITTEST_H_