Format gd/shim with new clang-format

find shim -regex '.*\.\(cc\|h\|tpp\)' -exec clang-format -style=file -i {} \;

Test: cert/run --host
Bug: 156858180
Tag: #gd-refactor
Change-Id: I6c2493df5f3a9d66cbdcb503f991792bb1904884