Make webkit_modules a split static library in non-component builds.

third_party/WebKit/Source/modules/BUILD.gn

Index: third_party/WebKit/Source/modules/BUILD.gn
diff --git a/third_party/WebKit/Source/modules/BUILD.gn b/third_party/WebKit/Source/modules/BUILD.gn
index d6f07d823f48b6afe211476007b7ffffff5b7153..c0040571b3bcca12d6d0d534c96201596a4bdefd 100644
--- a/third_party/WebKit/Source/modules/BUILD.gn
+++ b/third_party/WebKit/Source/modules/BUILD.gn
@@ -2,6 +2,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//build/split_static_library.gni")
 import("//third_party/WebKit/Source/bindings/bindings.gni")
 import("//third_party/WebKit/Source/bindings/modules/v8/generated.gni")
 import("//third_party/WebKit/Source/bindings/modules/v8/v8.gni")
@@ -10,16 +11,20 @@ import("//third_party/WebKit/Source/modules/modules.gni")
 
 visibility = [ "//third_party/WebKit/Source/*" ]
 
-# GYP version: WebKit/Source/modules/modules.gyp:modules
-component("modules") {
+if (!is_component_build && is_win && is_official_build) {
+  # This target as a static library (for non-component builds) is >2GB for
+  # official builds on Windows. This causes linking fail. As a workaround,
+  # force using a split static library for this configuration.
+  modules_target_type = "split_static_library"
+} else {
+  modules_target_type = "component"
+}
+
+target(modules_target_type, "modules") {
   output_name = "blink_modules"
 
-  if (is_win && is_official_build) {
-    # This target is >2GB for official builds on Windows which causes linking
-    # with the library to fail. As a workaround, force using a source set in
-    # this configuration whcih avoids generating the .lib file (although will
-    # cause slower links).
-    static_component_type = "source_set"
+  if (modules_target_type == "split_static_library") {
+    split_count = 5
   }
 
   visibility = []  # Allow re-assignment of list.