Use the cpuid instruction to generate the CPU brand string. And

base/cpu.h

Index: base/cpu.h
===================================================================
--- base/cpu.h	(revision 159378)
+++ base/cpu.h	(working copy)
@@ -32,7 +32,7 @@
   bool has_ssse3() const { return has_ssse3_; }
   bool has_sse41() const { return has_sse41_; }
   bool has_sse42() const { return has_sse42_; }
-
+  const std::string& cpu_brand() const { return cpu_brand_; }

[Zhenyao Mo, 2012/10/02 22:01:32]

nit: you need an empty line before private: (sorry I didn't catch this the first
round)

  private:
   // Query the processor for CPUID information.
   void Initialize();
@@ -51,6 +51,7 @@
   bool has_sse41_;
   bool has_sse42_;
   std::string cpu_vendor_;
+  std::string cpu_brand_;
 };
 
 }  // namespace base