chore: remove redundant chromium patches (#50463)

- export_gin_v8platform_pageallocator_for_usage_outside_of_the_gin.patch:
  gin::V8Platform::GetPageAllocator() is now exported upstream via the
  public v8::Platform interface, so we no longer need to patch gin to
  expose a custom accessor. Update javascript_environment.cc to use the
  upstream API instead.

- fix_getcursorscreenpoint_wrongly_returns_0_0.patch: this fix has
  landed upstream in Chromium and is no longer needed as a local patch.

patches/chromium/.patches

@@ -52,7 +52,6 @@ adjust_accessibility_ui_for_electron.patch
 worker_feat_add_hook_to_notify_script_ready.patch
 chore_provide_iswebcontentscreationoverridden_with_full_params.patch
 fix_properly_honor_printing_page_ranges.patch
-export_gin_v8platform_pageallocator_for_usage_outside_of_the_gin.patch
 fix_export_zlib_symbols.patch
 web_contents.patch
 webview_fullscreen.patch
@@ -104,7 +103,6 @@ chore_remove_check_is_test_on_script_injection_tracker.patch
 fix_restore_original_resize_performance_on_macos.patch
 feat_allow_code_cache_in_custom_schemes.patch
 build_run_reclient_cfg_generator_after_chrome.patch
-fix_getcursorscreenpoint_wrongly_returns_0_0.patch
 fix_add_support_for_skipping_first_2_no-op_refreshes_in_thumb_cap.patch
 refactor_expose_file_system_access_blocklist.patch
 feat_add_support_for_missing_dialog_features_to_shell_dialogs.patch

patches/chromium/export_gin_v8platform_pageallocator_for_usage_outside_of_the_gin.patch

@@ -1,37 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Samuel Attard <samuel.r.attard@gmail.com>
-Date: Tue, 3 Nov 2020 16:49:32 -0800
-Subject: export gin::V8Platform::PageAllocator for usage outside of the gin
- platform
-
-In order for memory allocation in the main process node environment to be
-correctly tagged with MAP_JIT we need to use gins page allocator instead
-of the default V8 allocator.  This probably can't be usptreamed.
-
-diff --git a/gin/public/v8_platform.h b/gin/public/v8_platform.h
-index 8c32005730153251e93516340e4baa500d777178..ff444dc689542a909ec5aada39816931b3320921 100644
---- a/gin/public/v8_platform.h
-+++ b/gin/public/v8_platform.h
-@@ -32,6 +32,7 @@ class GIN_EXPORT V8Platform : public v8::Platform {
-   // enabling Arm's Branch Target Instructions for executable pages. This is
-   // verified in the tests for gin::PageAllocator.
-   PageAllocator* GetPageAllocator() override;
-+  static PageAllocator* GetCurrentPageAllocator();
- #if PA_BUILDFLAG(ENABLE_THREAD_ISOLATION)
-   ThreadIsolatedAllocator* GetThreadIsolatedAllocator() override;
- #endif
-diff --git a/gin/v8_platform.cc b/gin/v8_platform.cc
-index fe339f6a069064ec92bddd5df9df96f84d13bd9a..41bc93d602c6558620ec728ac8207dedbabdd407 100644
---- a/gin/v8_platform.cc
-+++ b/gin/v8_platform.cc
-@@ -222,6 +222,10 @@ ThreadIsolatedAllocator* V8Platform::GetThreadIsolatedAllocator() {
- }
- #endif  // PA_BUILDFLAG(ENABLE_THREAD_ISOLATION)
- 
-+PageAllocator* V8Platform::GetCurrentPageAllocator() {
-+  return g_page_allocator.Pointer();
-+}
-+
- void V8Platform::OnCriticalMemoryPressure() {
- // We only have a reservation on 32-bit Windows systems.
- // TODO(bbudge) Make the #if's in BlinkInitializer match.

patches/chromium/fix_getcursorscreenpoint_wrongly_returns_0_0.patch

@@ -1,25 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Charles Kerr <charles@charleskerr.com>
-Date: Thu, 8 Feb 2024 00:41:40 -0600
-Subject: fix: GetCursorScreenPoint() wrongly returns 0, 0
-
-Fixes #41143. Discussion of the issue at
-https://github.com/electron/electron/issues/41143#issuecomment-1933443163
-
-This patch should be backported to e29, upstreamed to Chromium, and then
-removed if it lands upstream.
-
-diff --git a/ui/events/x/events_x_utils.cc b/ui/events/x/events_x_utils.cc
-index 185c9dbc22237d330b1c2020cae93ffcda5de6fa..0f6c98411feecda79e26b52e4d889d6e61b550ae 100644
---- a/ui/events/x/events_x_utils.cc
-+++ b/ui/events/x/events_x_utils.cc
-@@ -608,6 +608,9 @@ gfx::Point EventLocationFromXEvent(const x11::Event& xev) {
- gfx::Point EventSystemLocationFromXEvent(const x11::Event& xev) {
-   if (auto* crossing = xev.As<x11::CrossingEvent>())
-     return gfx::Point(crossing->root_x, crossing->root_y);
-+  if (auto* crossing = xev.As<x11::Input::CrossingEvent>())
-+    return gfx::Point(Fp1616ToDouble(crossing->root_x),
-+                      Fp1616ToDouble(crossing->root_y));
-   if (auto* button = xev.As<x11::ButtonEvent>())
-     return gfx::Point(button->root_x, button->root_y);
-   if (auto* motion = xev.As<x11::MotionNotifyEvent>())

shell/browser/javascript_environment.cc

@@ -106,7 +106,7 @@ v8::Isolate* JavascriptEnvironment::Initialize(uv_loop_t* event_loop,
   node::tracing::TraceEventHelper::SetAgent(tracing_agent);
   platform_ = node::MultiIsolatePlatform::Create(
       base::RecommendedMaxNumberOfThreadsInThreadGroup(3, 8, 0.1, 0),
-      tracing_controller, gin::V8Platform::GetCurrentPageAllocator());
+      tracing_controller, gin::V8Platform::Get()->GetPageAllocator());
 
   v8::V8::InitializePlatform(platform_.get());
   gin::IsolateHolder::Initialize(