Add chrome clang tests as custom targets instead of tests.

tools/clang/CMakeLists.txt

Index: tools/clang/CMakeLists.txt
diff --git a/tools/clang/CMakeLists.txt b/tools/clang/CMakeLists.txt
index 21b5a9fcea7b3858f94f063bec8eefec465cf313..52ea9a10a52d6de0a43eb59699df66a847b99d34 100644
--- a/tools/clang/CMakeLists.txt
+++ b/tools/clang/CMakeLists.txt
@@ -28,19 +28,19 @@ link_directories("${CMAKE_SOURCE_DIR}/lib"
                  "${CMAKE_BINARY_DIR}/lib"
                  "${CMAKE_BINARY_DIR}/tools/clang/lib")
 
+# Tests for all enabled tools can be run by building this target.
+add_custom_target(cr-check-all COMMAND ${CMAKE_CTEST_COMMAND} -V)
+
 # cr_add_test(
 #   name
 #   testprog
 #   arguments...
 #   )
 function(cr_add_test name testprog)
-  add_test(NAME ${name} COMMAND ${testprog} ${ARGN})
+  add_custom_target(${name} COMMAND ${testprog} ${ARGN})
   add_dependencies(cr-check-all ${name})
 endfunction(cr_add_test)
 
-# Tests for all enabled tools can be run by building this target.
-add_custom_target(cr-check-all COMMAND ${CMAKE_CTEST_COMMAND} -V)
-
 function(cr_install)
   install(${ARGN} COMPONENT chrome-tools OPTIONAL)
 endfunction(cr_install)