This patch is the rest of the lint cleanup minus the other open issue.

chrome/renderer/external_extension.cc

Index: chrome/renderer/external_extension.cc
diff --git a/chrome/renderer/external_extension.cc b/chrome/renderer/external_extension.cc
index f0e0bd58a3cc0ab2cf6b88cdbcc95cad1fdfbfd9..e31c42234d4410cffb41b6f6c796a96b414635e9 100644
--- a/chrome/renderer/external_extension.cc
+++ b/chrome/renderer/external_extension.cc
@@ -51,7 +51,7 @@ class ExternalExtensionWrapper : public v8::Extension {
     if (!renderview) return v8::Undefined();
 
     std::string name = std::string(*v8::String::Utf8Value(args[0]));
-    if (!name.length()) return v8::Undefined();;
+    if (!name.length()) return v8::Undefined();
 
     renderview->AddSearchProvider(name);
     return v8::Undefined();