Explicitly enable clang-tools-extra for Fuchsia

[phosek]

Summary

This won't be enabled automatically after D58157 lands.

[smeenai]

LGTM

[rnk]

I will take this opportunity to plug the annotated builders in zorg/zorg/buildbot/builders/annotated/annotated_builder.py. If you rework your buildbot into the annotator framework, you won't need to wait for a master restart.

zorg/buildbot/builders/FuchsiaBuilder.py

def getToolchainBuildFactory(
     if extra_configure_args is None:
         cmake_options = []
     else:
         cmake_options = extra_configure_args[:]
 
     # Some options are required for this stage no matter what.
     CmakeCommand.applyRequiredOptions(cmake_options, [
         ("-G",                      "Ninja"),
-        ("-DLLVM_ENABLE_PROJECTS=", "clang;lld"),
+        ("-DLLVM_ENABLE_PROJECTS=", "clang;clang-tools-extra;lld"),
         ("-DLLVM_ENABLE_RUNTIMES=", "compiler-rt;libcxx;libcxxabi;libunwind"),
         ])
 
     # Set proper defaults.
     CmakeCommand.applyDefaultOptions(cmake_options, [
         ("-DBOOTSTRAP_LLVM_ENABLE_LTO=", "OFF"),
         ("-DLLVM_ENABLE_LTO=",           "OFF"),
         ])