[build] Link V8 as component in static library builds

gni/v8.gni

 # Copyright 2016 the V8 project authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/sanitizers/sanitizers.gni")
 import("//build/config/v8_target_cpu.gni")
 import("//build_overrides/v8.gni")
 
 declare_args() {
   # Indicate if valgrind was fetched as a custom deps to make it available on
@@ skipping 69 matching lines @@
   }
 }
 
 if (is_posix && v8_enable_backtrace) {
   v8_remove_configs += [ "//build/config/gcc:symbol_visibility_hidden" ]
   v8_add_configs += [ "//build/config/gcc:symbol_visibility_default" ]
 }
 
 # All templates should be kept in sync.
 template("v8_source_set") {
-  source_set(target_name) {
-    forward_variables_from(invoker, "*", [ "configs" ])
-    configs += invoker.configs
-    configs -= v8_remove_configs
-    configs += v8_add_configs
+  if (defined(v8_static_library) && v8_static_library) {
+    static_library(target_name) {
+      forward_variables_from(invoker, "*", [ "configs" ])
+      configs += invoker.configs
+      configs -= v8_remove_configs
+      configs += v8_add_configs
+    }
+  } else {
+    source_set(target_name) {
+      forward_variables_from(invoker, "*", [ "configs" ])
+      configs += invoker.configs
+      configs -= v8_remove_configs
+      configs += v8_add_configs
+    }
   }
 }
 
 template("v8_executable") {
   executable(target_name) {
     forward_variables_from(invoker,
                            "*",
                            [
                              "configs",
                              "remove_configs",
@@ skipping 12 matching lines @@
 }
 
 template("v8_component") {
   component(target_name) {
     forward_variables_from(invoker, "*", [ "configs" ])
     configs += invoker.configs
     configs -= v8_remove_configs
     configs += v8_add_configs
   }
 }