Fix placement of windows.h include for Win 8.1 SDK.
Fix placement of windows.h include for Win 8.1 SDK.

The windows header must be included before versionhelpers.h.

BUG=angle:649

Change-Id: Ifee95b2918ea039f9a1c93ad0244bf2d35bd8570
Reviewed-on: https://chromium-review.googlesource.com/201462
Reviewed-by: Geoff Lang <b6fc25fe0362055230985c05cbfa8adb741ccc0f@chromium.org>
Tested-by: Jamie Madill <7e492b4f1c8458024932de3ba475cbf015424c30@chromium.org>

vvuk/angle,ecoal95/angle,vvuk/angle,xin3liang/platform_external_chromium_org_third_party_angle,xin3liang/platform_external_chromium_org_third_party_angle,ghostoy/angle,nandhanurrevanth/angle,larsbergstrom/angle,csa7mdm/angle,geekboxzone/lollipop_external_chromium_org_third_party_angle,mrobinson/rust-angle,MIPS/external-chromium_org-third_party-angle,MSOpenTech/angle,bsergean/angle,mybios/angle,mikolalysenko/angle,mikolalysenko/angle,nandhanurrevanth/angle,vvuk/angle,mrobinson/rust-angle,geekboxzone/lollipop_external_chromium_org_third_party_angle,ecoal95/angle,mybios/angle,larsbergstrom/angle,bsergean/angle,vvuk/angle,ghostoy/angle,mlfarrell/angle,crezefire/angle,ppy/angle,ppy/angle,domokit/waterfall,mybios/angle,ghostoy/angle,mrobinson/rust-angle,ppy/angle,crezefire/angle,android-ia/platform_external_chromium_org_third_party_angle,android-ia/platform_external_chromium_org_third_party_angle,xin3liang/platform_external_chromium_org_third_party_angle,domokit/waterfall,ecoal95/angle,geekboxzone/lollipop_external_chromium_org_third_party_angle,android-ia/platform_external_chromium_org_third_party_angle,MSOpenTech/angle,mlfarrell/angle,MIPS/external-chromium_org-third_party-angle,MSOpenTech/angle,ghostoy/angle,larsbergstrom/angle,jgcaaprom/android_external_chromium_org_third_party_angle,nandhanurrevanth/angle,MSOpenTech/angle,mrobinson/rust-angle,mikolalysenko/angle,MIPS/external-chromium_org-third_party-angle,bsergean/angle,mikolalysenko/angle,mlfarrell/angle,csa7mdm/angle,mybios/angle,geekboxzone/lollipop_external_chromium_org_third_party_angle,csa7mdm/angle,ecoal95/angle,MIPS/external-chromium_org-third_party-angle,jgcaaprom/android_external_chromium_org_third_party_angle,larsbergstrom/angle,jgcaaprom/android_external_chromium_org_third_party_angle,crezefire/angle,jgcaaprom/android_external_chromium_org_third_party_angle,xin3liang/platform_external_chromium_org_third_party_angle,ppy/angle,csa7mdm/angle,nandhanurrevanth/angle,mrobinson/rust-angle,android-ia/platform_external_chromium_org_third_party_angle,crezefire/angle,mlfarrell/angle,ecoal95/angle,bsergean/angle