roll gtest 700:704
roll gtest 700:704

Include fixes: https://code.google.com/p/googletest/source/detail?r=701
MinGW specific: https://code.google.com/p/googletest/source/detail?r=702

The reason I want this: Fixing compiling the gmock header in .mm files
with new clang revisions that have clang r220714:
https://code.google.com/p/googletest/source/detail?r=703
https://code.google.com/p/googletest/source/detail?r=704

BUG=444089
TBR=hans@chromium.org

Review URL: https://codereview.chromium.org/838933003

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#311518}

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