[clang] [Format] Configure ASSIGN_OR_RETURN macros for Google style (PR #200210)

[Jesse Rosenstock via cfe-commits]

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@@ -2101,6 +2101,20 @@ FormatStyle getGoogleStyle(FormatStyle::LanguageKind Language) {
   GoogleStyle.IncludeStyle.IncludeIsMainRegex = "([-_](test|unittest))?$";
   GoogleStyle.IndentCaseLabels = true;
   GoogleStyle.KeepEmptyLines.AtStartOfBlock = false;
+
+  GoogleStyle.Macros.push_back("ASSIGN_OR_RETURN(a, b)=a = (b)");
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jmr wrote:

This is how https://github.com/llvm/llvm-project/pull/169037/changes, which was merged, did it.

https://github.com/llvm/llvm-project/pull/200210