base::Value cleanup: add simple Clang tool for structured cleanups

tools/clang/rewrite_to_chrome_style/RewriteToChromeStyle.cpp

Index: tools/clang/rewrite_to_chrome_style/RewriteToChromeStyle.cpp
diff --git a/tools/clang/rewrite_to_chrome_style/RewriteToChromeStyle.cpp b/tools/clang/rewrite_to_chrome_style/RewriteToChromeStyle.cpp
index acd6bd34ebb27e03f7afdef1dd5ebb0f014281e7..9ae3201a4c2b0964141b30d3207de19373c716b6 100644
--- a/tools/clang/rewrite_to_chrome_style/RewriteToChromeStyle.cpp
+++ b/tools/clang/rewrite_to_chrome_style/RewriteToChromeStyle.cpp
@@ -53,10 +53,6 @@ const char kBlinkStaticMemberPrefix[] = "s_";
 const char kGeneratedFileRegex[] = "^gen/|/gen/";
 
 const clang::ast_matchers::internal::
-    VariadicDynCastAllOfMatcher<clang::Expr, clang::UnresolvedLookupExpr>
-        unresolvedLookupExpr;
-
-const clang::ast_matchers::internal::
     VariadicDynCastAllOfMatcher<clang::Expr, clang::UnresolvedMemberExpr>
         unresolvedMemberExpr;