cef/patch/patches/osr_fling_2745.patch

diff --git content/browser/renderer_host/input/fling_scheduler.cc content/browser/renderer_host/input/fling_scheduler.cc
index 431df5d50debe..0fcc9ea8fbb1a 100644
--- content/browser/renderer_host/input/fling_scheduler.cc
+++ content/browser/renderer_host/input/fling_scheduler.cc
@@ -68,6 +68,9 @@ void FlingScheduler::ProgressFlingOnBeginFrameIfneeded(
 }
 
 ui::Compositor* FlingScheduler::GetCompositor() {
+  if (compositor_) {
+    return compositor_;
+  }
   if (!host_->GetView()) {
     return nullptr;
   }
diff --git content/browser/renderer_host/render_widget_host_impl.cc content/browser/renderer_host/render_widget_host_impl.cc
index 7fba410705048..7ce1d8a5eeb7f 100644
--- content/browser/renderer_host/render_widget_host_impl.cc
+++ content/browser/renderer_host/render_widget_host_impl.cc
@@ -3292,6 +3292,11 @@ void RenderWidgetHostImpl::OnInvalidInputEventSource() {
       GetProcess(), bad_message::INPUT_ROUTER_INVALID_EVENT_SOURCE);
 }
 
+void RenderWidgetHostImpl::SetCompositorForFlingScheduler(
+    ui::Compositor* compositor) {
+  GetRenderInputRouter()->fling_scheduler()->SetCompositor(compositor);
+}
+
 void RenderWidgetHostImpl::AddPendingUserActivation(
     const WebInputEvent& event) {
   if ((base::FeatureList::IsEnabled(
diff --git content/browser/renderer_host/render_widget_host_impl.h content/browser/renderer_host/render_widget_host_impl.h
index dee4fb6b79285..fd3eaef2b6972 100644
--- content/browser/renderer_host/render_widget_host_impl.h
+++ content/browser/renderer_host/render_widget_host_impl.h
@@ -811,6 +811,7 @@ class CONTENT_EXPORT RenderWidgetHostImpl
 
   void ProgressFlingIfNeeded(base::TimeTicks current_time);
   void StopFling();
+  void SetCompositorForFlingScheduler(ui::Compositor* compositor);
 
   RenderWidgetHostViewBase* GetRenderWidgetHostViewBase();
 
diff --git content/common/input/fling_scheduler_base.h content/common/input/fling_scheduler_base.h
index e8ee63f3abc2e..765ea358e093a 100644
--- content/common/input/fling_scheduler_base.h
+++ content/common/input/fling_scheduler_base.h
@@ -5,14 +5,26 @@
 #ifndef CONTENT_COMMON_INPUT_FLING_SCHEDULER_BASE_H_
 #define CONTENT_COMMON_INPUT_FLING_SCHEDULER_BASE_H_
 
+#include "base/memory/raw_ptr.h"
 #include "content/common/input/fling_controller.h"
 
+namespace ui {
+class Compositor;
+}
+
 namespace content {
 
 class FlingSchedulerBase : public FlingControllerSchedulerClient {
  public:
   virtual void ProgressFlingOnBeginFrameIfneeded(
       base::TimeTicks current_time) = 0;
+
+  void SetCompositor(ui::Compositor* compositor) {
+    compositor_ = compositor;
+  }
+
+protected:
+ raw_ptr<ui::Compositor> compositor_ = nullptr;
 };
 
 }  // namespace content
diff --git content/common/input/render_input_router.h content/common/input/render_input_router.h
index cab10100a369d..d8f3be04bfeba 100644
--- content/common/input/render_input_router.h
+++ content/common/input/render_input_router.h
@@ -61,6 +61,7 @@ class CONTENT_EXPORT RenderInputRouter : public InputRouterImplClient {
 
   InputRouter* input_router() { return input_router_.get(); }
   RenderInputRouterDelegate* delegate() { return delegate_; }
+  FlingSchedulerBase* fling_scheduler() { return fling_scheduler_.get(); }
 
   void SetForceEnableZoom(bool);
   void SetDeviceScaleFactor(float device_scale_factor);