Inline method.

src/Workspaces/Core/Portable/FindSymbols/SymbolFinder_Declarations.cs

@@ -13,35 +13,6 @@ namespace Microsoft.CodeAnalysis.FindSymbols
 {
     public static partial class SymbolFinder
     {
-        /// <summary>
-        /// Makes certain all namespace symbols returned by API are from the compilation.
-        /// </summary>
-        private static ImmutableArray<ISymbol> TranslateNamespaces(
-            ImmutableArray<ISymbol> symbols, Compilation compilation)
-        {
-            var builder = ArrayBuilder<ISymbol>.GetInstance();
-            foreach (var symbol in symbols)
-            {
-                var ns = symbol as INamespaceSymbol;
-                if (ns != null)
-                {
-                    builder.Add(compilation.GetCompilationNamespace(ns));
-                }
-                else
-                {
-                    builder.Add(symbol);
-                }
-            }
-
-            var result = builder.Count == symbols.Length
-                ? symbols
-                : builder.ToImmutable();
-
-            builder.Free();
-
-            return result;
-        }
-
         private static Task AddCompilationDeclarationsWithNormalQueryAsync(
             Project project, SearchQuery query, SymbolFilter filter,
             ArrayBuilder<ISymbol> list, CancellationToken cancellationToken)

src/Workspaces/Core/Portable/FindSymbols/SymbolFinder_Declarations_AllDeclarations.cs

@@ -97,7 +97,17 @@ public static partial class SymbolFinder
                 }
             }
 
-            return TranslateNamespaces(list.ToImmutableAndFree(), compilation);
+            // Make certain all namespace symbols returned by API are from the compilation.
+            for (var i = 0; i < list.Count; i++)
+            {
+                var symbol = list[i];
+                if (symbol is INamespaceSymbol ns)
+                {
+                    list[i] = compilation.GetCompilationNamespace(ns);
+                }
+            }
+
+            return list.ToImmutableAndFree();
         }
     }
 }
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