message: TestCase init: use static const instead of just const.
  If we use const, we generate a gigantic variable locally while
  static would allow it to not count to the local stack.
  (can't make the constexpr unfortunately, as they are not
  literal types)
diff: @@ -194,7 +194,7 @@ constexpr ExpectedInterTokenInfo kUnhandledSpacing{kUnhandledSpaces,
  // was not explicitly handled and just defaulted.
  // This test covers cases that are not context-sensitive.
  TEST(TokenAnnotatorTest, AnnotateFormattingInfoTest) {
  - const AnnotateFormattingInformationTestCase kTestCases[] = {
  + static const AnnotateFormattingInformationTestCase kTestCases[] = {
  // (empty array of tokens)
  {DefaultStyle, 0, {}, {}},
  @@ -1835,7 +1835,7 @@ TEST(TokenAnnotatorTest, AnnotateFormattingInfoTest) {
  // These test cases support the use of syntactic context, but it is not
  // required to specify context.
  TEST(TokenAnnotatorTest, AnnotateFormattingWithContextTest) {
  - const AnnotateWithContextTestCase kTestCases[] = {
  + static const AnnotateWithContextTestCase kTestCases[] = {
  {
  DefaultStyle,
  {'=', "="},
  @@ -4761,7 +4761,7 @@ static const auto CompactIndexSelectionStyle = []() {
  // These tests are allowed to be sensitive to original inter-token spacing.
  TEST(TokenAnnotatorTest, OriginalSpacingSensitiveTests) {
  - const OriginalSpacingSensitiveTestCase kTestCases[] = {
  + static const OriginalSpacingSensitiveTestCase kTestCases[] = {
  {// No comments
  DefaultStyle,
  '=', // left token
  