Aligns requestAnimationFrame's callback to the w3c specification

From: uazo <uazo@users.noreply.github.com>

Date: Mon, 3 Oct 2022 09:39:07 +0000

Subject: Fix WebWorker requestAnimationFrame

Aligns requestAnimationFrame's callback to the w3c specification

See bugid 1236113

---

 .../animation_frame/worker_animation_frame_provider.cc    | 8 +++++++-

 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/third_party/blink/renderer/core/animation_frame/worker_animation_frame_provider.cc b/third_party/blink/renderer/core/animation_frame/worker_animation_frame_provider.cc

--- a/third_party/blink/renderer/core/animation_frame/worker_animation_frame_provider.cc

+++ b/third_party/blink/renderer/core/animation_frame/worker_animation_frame_provider.cc

@@ -7,7 +7,9 @@

 #include "base/trace_event/trace_event.h"

 #include "third_party/blink/renderer/core/offscreencanvas/offscreen_canvas.h"

 #include "third_party/blink/renderer/core/timing/worker_global_scope_performance.h"

+#include "third_party/blink/renderer/core/workers/worker_global_scope.h"

 #include "third_party/blink/renderer/platform/bindings/microtask.h"

+#include "third_party/blink/renderer/platform/wtf/casting.h"

 #include "third_party/blink/renderer/platform/wtf/cross_thread_functional.h"

 namespace blink {

@@ -62,7 +64,11 @@ void WorkerAnimationFrameProvider::BeginFrame(const viz::BeginFrameArgs& args) {

             }

           }

-          double time = (args.frame_time - base::TimeTicks()).InMillisecondsF();

+          auto* global_scope = DynamicTo<WorkerGlobalScope>(provider->context_.Get());

+          DCHECK(global_scope);

+          double time = Performance::ClampTimeResolution(

+                          args.frame_time - global_scope->TimeOrigin(),

+                          provider->context_->CrossOriginIsolatedCapability());

           provider->callback_collection_.ExecuteFrameCallbacks(time, time);

         }

         provider->begin_frame_provider_->FinishBeginFrame(args);

--

2.25.1