Add SUITE_EDUCATION_PRO to base::win::VersionType

Until now Chrome would regard Windows Pro Education as a SUITE_HOME
version type, which blocked sensitive policies.

This change adds the SUITE_EDUCATION_PRO version type and classifies
Windows Pro Education (and its N variant) as such.

SUITE_EDUCATION_PRO and sensitive policies are no longer blocked.

Bug: 1149740
Test: Chromium in a Win Pro Edu instance is indeed classified as
Change-Id: Ic602f5c86e1e7f39095f78d816498ac5312b9ccc
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2922889
Reviewed-by: Robert Liao <robliao@chromium.org>
Commit-Queue: Robert Liao <robliao@chromium.org>
Cr-Commit-Position: refs/heads/master@{#889445}

base/win/windows_version.cc

@@ -157,6 +157,10 @@ OSInfo::OSInfo(const _OSVERSIONINFOEXW& version_info,
       case PRODUCT_BUSINESS_N:
         version_type_ = SUITE_ENTERPRISE;
         break;
+      case PRODUCT_PRO_FOR_EDUCATION:
+      case PRODUCT_PRO_FOR_EDUCATION_N:
+        version_type_ = SUITE_EDUCATION_PRO;
+        break;
       case PRODUCT_EDUCATION:
       case PRODUCT_EDUCATION_N:
         version_type_ = SUITE_EDUCATION;

base/win/windows_version.h

@@ -64,6 +64,7 @@ enum VersionType {
   SUITE_SERVER,
   SUITE_ENTERPRISE,
   SUITE_EDUCATION,
+  SUITE_EDUCATION_PRO,
   SUITE_LAST,
 };
 

tools/metrics/histograms/enums.xml

@@ -59655,6 +59655,9 @@ Called by update_net_trust_anchors.py.-->
   <int value="2" label="Windows Server Edition"/>
   <int value="3" label="Windows Enterprise Edition"/>
   <int value="4" label="Windows Education Edition"/>
+  <int value="5" label="Windows Pro Education Edition">
+    Extracted from home/unknown editions in M93.
+  </int>
 </enum>
 
 <enum name="OSXExceptionHandlerEvents">