One more OVERRIDE test that the code should already pass.

tools/clang/plugins/tests/overridden_methods.h

Index: tools/clang/plugins/tests/overridden_methods.h
diff --git a/tools/clang/plugins/tests/overridden_methods.h b/tools/clang/plugins/tests/overridden_methods.h
index 08ef0a5e4862afcda36cb2f9bbcd446109032f9e..150c79913f1b54181b74b047ea2ba94ce009c076 100644
--- a/tools/clang/plugins/tests/overridden_methods.h
+++ b/tools/clang/plugins/tests/overridden_methods.h
@@ -12,6 +12,7 @@ class BaseClass {
   virtual void SomeMethod() = 0;
   virtual void SomeOtherMethod() = 0;
   virtual void SomeInlineMethod() = 0;
+  virtual void SomeNonPureBaseMethod() {}
 };
 
 class InterimClass : public BaseClass {
@@ -46,6 +47,8 @@ class DerivedClass : public InterimClass,
   virtual void SomeInlineMethod() {}
   // Should not warn if overriding a method whose origin is WebKit.
   virtual void WebKitModifiedSomething();
+  // Should warn if overridden method isn't pure.
+  virtual void SomeNonPureBaseMethod() {}
 };
 
 #endif  // OVERRIDDEN_METHODS_H_