omitNeedlessWords: sink helper enum into .cpp file

No functionality change.

Author: jrose-apple

Diff for: include/swift/Basic/StringExtras.h

@@ -315,25 +315,6 @@ namespace swift {
     size_t findWord(StringRef string, StringRef word);
   } // end namespace camel_case
 
-/// Describes the role that a particular name has within a
-/// signature, which can affect how we omit needless words.
-enum class NameRole {
-  /// The base name of a function or method.
-  BaseName,
-
-  /// The first parameter of a function or method.
-  FirstParameter,
-
-  // Subsequent parameters in a function or method.
-  SubsequentParameter,
-
-  // The name of a property.
-  Property,
-
-  // A partial name; used internally.
-  Partial,
-};
-
 /// Flags used by \c OmissionTypeName to describe the input type.
 enum class OmissionTypeFlags {
   /// Whether the parameter with this type has a default argument.

Diff for: lib/Basic/StringExtras.cpp

@@ -576,6 +576,27 @@ static bool textMatchesPropertyName(StringRef text,
   return false;
 }
 
+namespace {
+/// Describes the role that a particular name has within a
+/// signature, which can affect how we omit needless words.
+enum class NameRole {
+  /// The base name of a function or method.
+  BaseName,
+
+  /// The first parameter of a function or method.
+  FirstParameter,
+
+  // Subsequent parameters in a function or method.
+  SubsequentParameter,
+
+  // The name of a property.
+  Property,
+
+  // A partial name; used internally.
+  Partial,
+};
+} // end anonymous namespace
+
 static StringRef omitNeedlessWords(StringRef name,
                                    OmissionTypeName typeName,
                                    NameRole role,