Require Windows XP SP2, and disable a compile-time check which doesn't make much sense in the chromium code.

configure.in

@@ -455,11 +455,7 @@ case "$target" in
     WINVER=500
     ;;
 *)
-    if test -n "$GNU_CC"; then  
-        WINVER=501
-    else    
-        WINVER=500
-    fi
+    WINVER=502
     ;;
 esac
 

ipc/chromium/Makefile.in

@@ -132,11 +132,6 @@ CPPSRCS += \
 
 ifdef OS_WIN # {
 
-DEFINES += \
-  -D_WIN32_WINNT=0x0600 \
-  -DWINVER=0x0600 \
-  $(NULL)
-
 CPPSRCS += \
   base_paths_win.cc \
   cpu.cc \

ipc/chromium/src/base/win_util.cc

@@ -450,7 +450,7 @@ COMPILE_ASSERT(sizeof(&VisualStudio2005ServicePack1Detection) == sizeof(void*),
 //
 #endif  // _MSC_VER
 
-#ifndef COPY_FILE_COPY_SYMLINK
+#if 0
 #error You must install the Windows 2008 or Vista Software Development Kit and \
 set it as your default include path to build this library. You can grab it by \
 searching for "download windows sdk 2008" in your favorite web search engine.  \