Fix FYI bots for PartitionAlloc-Everywhere for Win

Continuation of crrev.com/c/2517220

This CL makes sure that the build is run on a Windows machine, so that
a Windows binary is produced. Otherwise, attempting to run a test on a
Windows machine will fail.

Bug: 1121427
Change-Id: Iebc07694b09f943b65fe0b89480e9dcf512fef93
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2526642
Commit-Queue: Haiyang Pan <hypan@google.com>
Reviewed-by: Haiyang Pan <hypan@google.com>
Auto-Submit: Bartek Nowierski <bartekn@chromium.org>
Cr-Commit-Position: refs/heads/master@{#825879}

infra/config/generated/cr-buildbucket.cfg

@@ -16833,7 +16833,7 @@ buckets {
       dimensions: "builderless:1"
       dimensions: "cores:8"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-16.04"
+      dimensions: "os:Windows"
       dimensions: "pool:luci.chromium.ci"
       dimensions: "ssd:0"
       exe {
@@ -16870,7 +16870,7 @@ buckets {
       dimensions: "builderless:1"
       dimensions: "cores:8"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-16.04"
+      dimensions: "os:Windows"
       dimensions: "pool:luci.chromium.ci"
       dimensions: "ssd:0"
       exe {
@@ -16907,7 +16907,7 @@ buckets {
       dimensions: "builderless:1"
       dimensions: "cores:8"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-16.04"
+      dimensions: "os:Windows"
       dimensions: "pool:luci.chromium.ci"
       dimensions: "ssd:0"
       exe {
@@ -16944,7 +16944,7 @@ buckets {
       dimensions: "builderless:1"
       dimensions: "cores:8"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-16.04"
+      dimensions: "os:Windows"
       dimensions: "pool:luci.chromium.ci"
       dimensions: "ssd:0"
       exe {

infra/config/subprojects/chromium/ci.star

@@ -2344,6 +2344,7 @@ ci.fyi_builder(
 
 ci.fyi_builder(
     name = "android-paeverywhere-arm-fyi-dbg",
+    builderless = True,
     console_view_entry = ci.console_view_entry(
         category = "paeverywhere|android",
         short_name = "32dbg",
@@ -2353,6 +2354,7 @@ ci.fyi_builder(
 
 ci.fyi_builder(
     name = "android-paeverywhere-arm-fyi-rel",
+    builderless = True,
     console_view_entry = ci.console_view_entry(
         category = "paeverywhere|android",
         short_name = "32rel",
@@ -2362,6 +2364,7 @@ ci.fyi_builder(
 
 ci.fyi_builder(
     name = "android-paeverywhere-arm64-fyi-dbg",
+    builderless = True,
     console_view_entry = ci.console_view_entry(
         category = "paeverywhere|android",
         short_name = "64dbg",
@@ -2371,6 +2374,7 @@ ci.fyi_builder(
 
 ci.fyi_builder(
     name = "android-paeverywhere-arm64-fyi-rel",
+    builderless = True,
     console_view_entry = ci.console_view_entry(
         category = "paeverywhere|android",
         short_name = "64rel",
@@ -2710,38 +2714,46 @@ ci.fyi_builder(
 
 ci.fyi_builder(
     name = "win-paeverywhere-x86-fyi-dbg",
+    builderless = True,
     console_view_entry = ci.console_view_entry(
         category = "paeverywhere|win",
         short_name = "32dbg",
     ),
     notifies = ["chrome-memory-safety"],
+    os = os.WINDOWS_ANY,
 )
 
 ci.fyi_builder(
     name = "win-paeverywhere-x86-fyi-rel",
+    builderless = True,
     console_view_entry = ci.console_view_entry(
         category = "paeverywhere|win",
         short_name = "32rel",
     ),
     notifies = ["chrome-memory-safety"],
+    os = os.WINDOWS_ANY,
 )
 
 ci.fyi_builder(
     name = "win-paeverywhere-x64-fyi-dbg",
+    builderless = True,
     console_view_entry = ci.console_view_entry(
         category = "paeverywhere|win",
         short_name = "64dbg",
     ),
     notifies = ["chrome-memory-safety"],
+    os = os.WINDOWS_ANY,
 )
 
 ci.fyi_builder(
     name = "win-paeverywhere-x64-fyi-rel",
+    builderless = True,
     console_view_entry = ci.console_view_entry(
         category = "paeverywhere|win",
         short_name = "64rel",
     ),
     notifies = ["chrome-memory-safety"],
+    os = os.WINDOWS_ANY,
 )
 
 ci.fyi_builder(