Tweak |in_blink_namespace|, to look at ancestors *and also* at qualifiers.

tools/clang/rewrite_to_chrome_style/tests/methods-expected.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "gen/thing.h"
 
 namespace v8 {
 
 class InterfaceOutsideOfBlink {
  public:
@@ skipping 171 matching lines @@
 };
 
 }  // namespace WTF
 
 void F2() {
   blink::StructInBlink b;
   b.Function();
   WTF::StructInWTF w;
   w.Function();
 }
+
+namespace blink {
+
+class ClassDeclaredInsideBlink {
+ public:
+  static void MethodDefinedOutsideBlink();
+};
+
+}  // namespace blink
+
+// https://crbug.com/640688 - need to rewrite method name below.
+void blink::ClassDeclaredInsideBlink::MethodDefinedOutsideBlink() {}