Get `gn gen` to succeed on Windows

ui/views/BUILD.gn

Index: ui/views/BUILD.gn
diff --git a/ui/views/BUILD.gn b/ui/views/BUILD.gn
index 384ff6b4bd41d07bde28c28a704c759f3328e182..1ae36a9e69b39c8f934a0f2382a67fd08a3ea145 100644
--- a/ui/views/BUILD.gn
+++ b/ui/views/BUILD.gn
@@ -45,17 +45,6 @@ component("views") {
     deps += [ "//ui/display/util" ]
   }
 
-  if (is_win) {
-    sources += gypi_values.views_win_sources
-    cflags = [ "/wd4267" ]  # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
-    libs = [ "/imm32.lib", "oleacc.lib" ]
-    ldflags = [ "/DELAYLOAD:user32.dll" ]
-    deps += [
-      "//third_party/iaccessible2",
-      "//third_party/wtl",
-    ]
-  }
-
   if (use_ozone) {
     deps += [ "//ui/ozone" ]
   }