Remove single_thread_task_runner.h from v8_per_isolate_data.h

An existing forward declaration is enough.

Bug: 242216
Change-Id: I1e2c60acf3aac2c90666d916dd92ad187d909900
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1794326Reviewed-by: Hitoshi Yoshida <peria@chromium.org>
Reviewed-by: Takuto Ikuta <tikuta@chromium.org>
Commit-Queue: Kent Tamura <tkent@chromium.org>
Cr-Commit-Position: refs/heads/master@{#695053}

third_party/blink/renderer/modules/screen_orientation/lock_orientation_callback.cc

@@ -4,6 +4,7 @@
 
 #include "third_party/blink/renderer/modules/screen_orientation/lock_orientation_callback.h"
 
+#include "base/single_thread_task_runner.h"
 #include "third_party/blink/public/platform/task_type.h"
 #include "third_party/blink/renderer/bindings/core/v8/script_promise_resolver.h"
 #include "third_party/blink/renderer/core/dom/dom_exception.h"

third_party/blink/renderer/platform/bindings/v8_per_isolate_data.h

@@ -29,7 +29,6 @@
 #include <memory>
 
 #include "base/macros.h"
-#include "base/single_thread_task_runner.h"
 #include "gin/public/gin_embedders.h"
 #include "gin/public/isolate_holder.h"
 #include "third_party/blink/renderer/platform/bindings/runtime_call_stats.h"