[clang-tools-extra] [clang-doc] Add a breadcrumb navigation bar (PR #173297)

[Paul Kirth via cfe-commits]

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@@ -165,6 +165,15 @@ struct Reference {
   SmallString<16> DocumentationFileName;
 };
 
+// A Context is a reference that holds a relative path from a certain Info's
+// location.
+struct Context : public Reference {
+  Context(SymbolID USR, StringRef Name, InfoType IT, StringRef QualName,
+          StringRef Path, SmallString<16> DocumentationFileName)
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ilovepi wrote:

>From the usage I see, this could just take an `Info&`, and initialize the base class via that, right? Seems more straightforward. Makes me also wonder if `Reference(Info&)` should also exist as a convenience API.

https://github.com/llvm/llvm-project/pull/173297