[backport] IWYU: Clean up header includes in platform.cc

I ran into "Too many open files" error while compiling this file with
a custom configuration on macOS.

Bug: none
Change-Id: I893e018a35b0619881ae465321ffaefd4748b357
Review-URL: https://chromium-review.googlesource.com/c/chromium/src/+/6010783
Cr-Commit-Position: refs/heads/main@{#1382884}
Reviewed-on: https://codereview.qt-project.org/c/qt/qtwebengine-chromium/+/604332
Reviewed-by: Allan Sandfeld Jensen <[email protected]>

Author: stampho

chromium/third_party/blink/public/platform/platform.h

@@ -44,7 +44,6 @@
 #include "base/threading/platform_thread.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
-#include "cc/tiles/raster_dark_mode_filter.h"
 #include "cc/trees/raster_context_provider_wrapper.h"
 #include "components/viz/common/surfaces/frame_sink_id.h"
 #include "media/base/audio_capturer_source.h"
@@ -56,12 +55,10 @@
 #include "third_party/blink/public/platform/cross_variant_mojo_util.h"
 #include "third_party/blink/public/platform/url_loader_throttle_provider.h"
 #include "third_party/blink/public/platform/web_audio_device.h"
-#include "third_party/blink/public/platform/web_common.h"
 #include "third_party/blink/public/platform/web_data.h"
 #include "third_party/blink/public/platform/web_string.h"
 #include "third_party/blink/public/platform/web_v8_value_converter.h"
 #include "third_party/blink/public/platform/websocket_handshake_throttle_provider.h"
-#include "third_party/webrtc/api/video/video_codec_type.h"
 #include "ui/base/resource/resource_scale_factor.h"
 #include "ui/gl/angle_implementation.h"
 #include "v8/include/v8-local-handle.h"
@@ -134,7 +131,6 @@ class WebSandboxSupport;
 class WebSecurityOrigin;
 class WebThemeEngine;
 class WebVideoCaptureImplManager;
-class WebSecurityOrigin;
 struct WebContentSecurityPolicyHeader;
 
 namespace scheduler {

chromium/third_party/blink/renderer/platform/exported/platform.cc

@@ -42,11 +42,9 @@
 #include "media/base/media_log.h"
 #include "services/network/public/cpp/shared_url_loader_factory.h"
 #include "third_party/blink/public/common/thread_safe_browser_interface_broker_proxy.h"
-#include "third_party/blink/public/mojom/service_worker/service_worker_fetch_handler_bypass_option.mojom-blink-forward.h"
 #include "third_party/blink/public/platform/scheduler/web_thread_scheduler.h"
 #include "third_party/blink/public/platform/web_dedicated_worker_host_factory_client.h"
 #include "third_party/blink/public/platform/web_graphics_context_3d_provider.h"
-#include "third_party/blink/public/platform/websocket_handshake_throttle.h"
 #include "third_party/blink/renderer/platform/bindings/parkable_string_manager.h"
 #include "third_party/blink/renderer/platform/font_family_names.h"
 #include "third_party/blink/renderer/platform/fonts/font_cache_memory_dump_provider.h"
@@ -62,17 +60,11 @@
 #include "third_party/blink/renderer/platform/instrumentation/tracing/memory_cache_dump_provider.h"
 #include "third_party/blink/renderer/platform/language.h"
 #include "third_party/blink/renderer/platform/loader/fetch/url_loader/url_loader_factory.h"
-#include "third_party/blink/renderer/platform/scheduler/common/simple_main_thread_scheduler.h"
 #include "third_party/blink/renderer/platform/scheduler/public/dummy_schedulers.h"
 #include "third_party/blink/renderer/platform/scheduler/public/main_thread.h"
 #include "third_party/blink/renderer/platform/scheduler/public/non_main_thread.h"
-#include "third_party/blink/renderer/platform/scheduler/public/post_cross_thread_task.h"
+#include "third_party/blink/renderer/platform/scheduler/public/thread_scheduler.h"
 #include "third_party/blink/renderer/platform/theme/web_theme_engine_helper.h"
-#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
-#include "third_party/blink/renderer/platform/wtf/cross_thread_functional.h"
-#include "third_party/blink/renderer/platform/wtf/hash_map.h"
-#include "third_party/webrtc/api/rtp_parameters.h"
-#include "third_party/webrtc/p2p/base/port_allocator.h"
 
 namespace blink {