[SystemInfo API] Finish TODOs in SystemInfoProvider

chrome/browser/extensions/api/system_info_cpu/cpu_info_provider.h

Index: chrome/browser/extensions/api/system_info_cpu/cpu_info_provider.h
diff --git a/chrome/browser/extensions/api/system_info_cpu/cpu_info_provider.h b/chrome/browser/extensions/api/system_info_cpu/cpu_info_provider.h
index df7d77c28df079546874046f29e2fd6ecd0bd471..ccad39b5e8db3eb7118f07a44cf59e1f39dcea32 100644
--- a/chrome/browser/extensions/api/system_info_cpu/cpu_info_provider.h
+++ b/chrome/browser/extensions/api/system_info_cpu/cpu_info_provider.h
@@ -16,12 +16,13 @@ class CpuInfoProvider
     : public SystemInfoProvider<api::system_info_cpu::CpuInfo> {
  public:
   // Overriden from SystemInfoProvider<CpuInfo>.
-  virtual bool QueryInfo(
-      api::system_info_cpu::CpuInfo* info) OVERRIDE;
+  virtual bool QueryInfo() OVERRIDE;
 
   // Return the single shared instance of CpuInfoProvider.
   static CpuInfoProvider* Get();
 
+  const api::system_info_cpu::CpuInfo& cpu_info() const;
+
  private:
   friend class SystemInfoProvider<api::system_info_cpu::CpuInfo>;
   friend class MockCpuInfoProviderImpl;