Revert of Mandoline filesystem: Enable windows build.

mandoline/BUILD.gn

Index: mandoline/BUILD.gn
diff --git a/mandoline/BUILD.gn b/mandoline/BUILD.gn
index 2bcd2e6ed1dcc08cab35b08131a6d463361940bc..db023aa01b41191aed7a786fe85203deda032c4a 100644
--- a/mandoline/BUILD.gn
+++ b/mandoline/BUILD.gn
@@ -11,10 +11,11 @@
   ]
 
   if (!is_component_build) {
-    deps += [
-      "//mandoline/app",
-      "//components/filesystem",
-    ]
+    deps += [ "//mandoline/app" ]
+
+    if (!is_win) {
+      deps += [ "//components/filesystem" ]
+    }
   }
 }
 
@@ -28,12 +29,15 @@
   if (!is_component_build && !is_mac) {
     deps += [
       "//components/clipboard:apptests",
-      "//components/filesystem:apptests",
       "//components/html_viewer:apptests",
       "//components/html_viewer:tests",
       "//components/resource_provider:apptests",
       "//components/resource_provider:tests",
       "//components/view_manager:tests",
     ]
+
+    if (!is_win) {
+      deps += [ "//components/filesystem:apptests" ]
+    }
   }
 }