[base] Implement CPU time on Windows.

src/base/win32-headers.h

Index: src/base/win32-headers.h
diff --git a/src/base/win32-headers.h b/src/base/win32-headers.h
index 20ec8e0261b136544c85d9faf03635fdd2956b4c..48c07f74e5cf297967d03512ca64071fd3ee3370 100644
--- a/src/base/win32-headers.h
+++ b/src/base/win32-headers.h
@@ -27,10 +27,10 @@
 #ifndef NOMCX
 #define NOMCX
 #endif
-// Require Windows XP or higher (this is required for the RtlCaptureContext
+// Require Windows Vista or higher (this is required for the RtlCaptureContext

[fmeawad, 2016/05/26 16:40:34]

nit: Still needs updating, it is required to read the CPU time

[lpy, 2016/05/26 20:50:55]

Done.

 // function to be present).
 #ifndef _WIN32_WINNT
-#define _WIN32_WINNT 0x501
+#define _WIN32_WINNT 0x0600
 #endif
 
 #include <windows.h>
@@ -39,10 +39,10 @@
 #include <signal.h>  // For raise().
 #include <time.h>  // For LocalOffset() implementation.
 #ifdef __MINGW32__
-// Require Windows XP or higher when compiling with MinGW. This is for MinGW
+// Require Windows Vista or higher when compiling with MinGW. This is for MinGW

[fmeawad, 2016/05/26 16:40:34]

nit: I do not thing the compiling with MinGW does require Vista which is what
the comment states

[lpy, 2016/05/26 20:50:55]

Done.

 // header files to expose getaddrinfo.
 #undef _WIN32_WINNT
-#define _WIN32_WINNT 0x501
+#define _WIN32_WINNT 0x0600
 #endif  // __MINGW32__
 #if !defined(__MINGW32__) || defined(__MINGW64_VERSION_MAJOR)
 #include <dbghelp.h>  // For SymLoadModule64 and al.