GN: Update Windows SDK version to 10586 in generated project files

It has already been updated to 10.0.10586.0 in other places
in the following CLs:
  https://codereview.chromium.org/1608013002
  https://codereview.chromium.org/1615603002

R=brettw@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1717603005

Cr-Original-Commit-Position: refs/heads/master@{#376857}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 687b6f3a94311da0094cc942413a9faef80d0b29
diff --git a/tools/gn/visual_studio_writer.cc b/tools/gn/visual_studio_writer.cc
index b0392b4..7748fbe 100644
--- a/tools/gn/visual_studio_writer.cc
+++ b/tools/gn/visual_studio_writer.cc
@@ -71,7 +71,7 @@
 const char kVersionStringVs2013[] = "Visual Studio 2013";  // Visual Studio 2013
 const char kVersionStringVs2015[] = "Visual Studio 2015";  // Visual Studio 2015
 const char kWindowsKitsVersion[] = "10";                   // Windows 10 SDK
-const char kWindowsKitsIncludeVersion[] = "10.0.10240.0";  // Windows 10 SDK
+const char kWindowsKitsIncludeVersion[] = "10.0.10586.0";  // Windows 10 SDK
 
 const char kGuidTypeProject[] = "{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}";
 const char kGuidTypeFolder[] = "{2150E333-8FDC-42A3-9474-1A3956D46DE8}";