Warning in the Linux/Mac builders:

In file included from ../../third_party/angle/src/tests/preprocessor_tests/input_test.cpp:7:
In file included from ../../third_party/angle/src/tests/preprocessor_tests/PreprocessorTest.h:7:
../../testing/gtest/include/gtest/gtest.h:1392:16: error: comparison of integers of different signs: 'const int' and 'const unsigned long' [-Werror,-Wsign-compare]
  if (expected == actual) {
      ~~~~~~~~ ^  ~~~~~~
../../testing/gtest/include/gtest/gtest.h:1422:12: note: in instantiation of function template specialization 'testing::internal::CmpHelperEQ<int, unsigned long>' requested here
    return CmpHelperEQ(expected_expression, actual_expression, expected,
           ^
../../third_party/angle/src/tests/preprocessor_tests/input_test.cpp:171:5: note: in instantiation of function template specialization 'testing::internal::EqHelper<false>::Compare<int, unsigned long>' requested here
    EXPECT_EQ(3, input.read(buf, maxSize, &lineNo));
    ^

BUG=angleproject:1125

This reverts commit c1157d19.

Change-Id: Ic6fa286d190b006cccc5154d86e21ecc03175763
Reviewed-on: https://chromium-review.googlesource.com/294080Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Jamie Madill <jmadill@chromium.org>