tools/gn: Remove includes of basictypes.h.

tools/gn/args.h

Index: tools/gn/args.h
diff --git a/tools/gn/args.h b/tools/gn/args.h
index 345516cb8148f034474dc2f8138bc77701277220..1f9cb52f7ded8f52c5be389b594e0abfbff307e4 100644
--- a/tools/gn/args.h
+++ b/tools/gn/args.h
@@ -5,12 +5,13 @@
 #ifndef TOOLS_GN_ARGS_H_
 #define TOOLS_GN_ARGS_H_
 
-#include "base/basictypes.h"
 #include "base/containers/hash_tables.h"
+#include "base/macros.h"
 #include "base/synchronization/lock.h"
-#include "tools/gn/err.h"
 #include "tools/gn/scope.h"
 
+class Err;
+
 extern const char kBuildArgs_Help[];
 
 // Manages build arguments. It stores the global arguments specified on the
@@ -101,7 +102,7 @@ class Args {
   // toolchain may define variables in different locations.
   mutable DeclaredArgumentsPerToolchain declared_arguments_per_toolchain_;
 
-  Args& operator=(const Args& other);  // Disallow assignment.

[brettw, 2015/08/09 17:15:18]

Ah yeah, I used to copy this around, but all that got removed. Thanks for
noticing this can be simplified.

+  DISALLOW_ASSIGN(Args);
 };
 
 #endif  // TOOLS_GN_ARGS_H_