Add missing header files to GN files (4 of N)

third_party/WebKit/Source/platform/BUILD.gn

Index: third_party/WebKit/Source/platform/BUILD.gn
diff --git a/third_party/WebKit/Source/platform/BUILD.gn b/third_party/WebKit/Source/platform/BUILD.gn
index 31e7f16d619e74e767c29e5ecc7a3471f69c15d2..03c7a57c702b58f18e245676f11a78a5d98a15c7 100644
--- a/third_party/WebKit/Source/platform/BUILD.gn
+++ b/third_party/WebKit/Source/platform/BUILD.gn
@@ -1283,6 +1283,7 @@ component("platform") {
     "scheduler/base/work_queue_sets.cc",
     "scheduler/base/work_queue_sets.h",
     "scheduler/child/compositor_worker_scheduler.cc",
+    "scheduler/child/compositor_worker_scheduler.h",
     "scheduler/child/idle_canceled_delayed_task_sweeper.cc",
     "scheduler/child/idle_canceled_delayed_task_sweeper.h",
     "scheduler/child/idle_helper.cc",
@@ -1299,9 +1300,11 @@ component("platform") {
     "scheduler/child/web_task_runner_impl.h",
     "scheduler/child/webthread_base.cc",
     "scheduler/child/webthread_impl_for_worker_scheduler.cc",
+    "scheduler/child/webthread_impl_for_worker_scheduler.h",
     "scheduler/child/worker_global_scope_scheduler.cc",
     "scheduler/child/worker_global_scope_scheduler.h",
     "scheduler/child/worker_scheduler.cc",
+    "scheduler/child/worker_scheduler.h",
     "scheduler/child/worker_scheduler_impl.cc",
     "scheduler/child/worker_scheduler_impl.h",
     "scheduler/renderer/auto_advancing_virtual_time_domain.cc",
@@ -1335,6 +1338,7 @@ component("platform") {
     "scheduler/renderer/webthread_impl_for_renderer_scheduler.cc",
     "scheduler/renderer/webthread_impl_for_renderer_scheduler.h",
     "scheduler/utility/webthread_impl_for_utility_thread.cc",
+    "scheduler/utility/webthread_impl_for_utility_thread.h",
     "scroll/MainThreadScrollingReason.h",
     "scroll/ProgrammaticScrollAnimator.cpp",
     "scroll/ProgrammaticScrollAnimator.h",
@@ -1483,11 +1487,6 @@ component("platform") {
     "weborigin/URLSecurityOriginMap.h",
   ]
 
-  if (is_android) {
-    set_sources_assignment_filter([])
-    sources += [ "exported/linux/WebFontRenderStyle.cpp" ]
-  }
-
   sources -= blink_platform_neon_files
   sources -= blink_platform_msa_files
   sources -= blink_platform_sse_files
@@ -1610,6 +1609,7 @@ component("platform") {
     # Add in some Linux files also shared with Android.
     set_sources_assignment_filter([])
     sources += [
+      "exported/linux/WebFontRenderStyle.cpp",
       "fonts/linux/FontPlatformDataLinux.cpp",
       "fonts/linux/FontRenderStyle.cpp",
       "fonts/linux/FontRenderStyle.h",