electron/patches/chromium/revert_partial_remove_unused_prehandlemouseevent.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: deepak1556 <hop2deep@gmail.com>
Date: Mon, 1 Sep 2025 23:31:49 +0900
Subject: Revert: partial "Remove unused PreHandleMouseEvent"

Refs https://chromium-review.googlesource.com/c/chromium/src/+/6880411

diff --git a/content/browser/renderer_host/render_widget_host_delegate.cc b/content/browser/renderer_host/render_widget_host_delegate.cc
index 74fea36ea7f9a345b3474ea18be00704831a685e..c75785d5a26fa52a39d1a3552da9a7621e4c8430 100644
--- a/content/browser/renderer_host/render_widget_host_delegate.cc
+++ b/content/browser/renderer_host/render_widget_host_delegate.cc
@@ -13,6 +13,11 @@
 
 namespace content {
 
+bool RenderWidgetHostDelegate::PreHandleMouseEvent(
+    const blink::WebMouseEvent& event) {
+  return false;
+}
+
 KeyboardEventProcessingResult RenderWidgetHostDelegate::PreHandleKeyboardEvent(
     const input::NativeWebKeyboardEvent& event) {
   return KeyboardEventProcessingResult::NOT_HANDLED;
diff --git a/content/browser/renderer_host/render_widget_host_delegate.h b/content/browser/renderer_host/render_widget_host_delegate.h
index bc1bfa1ac381ec94121a264d9dcbae9e02ab5a81..c6fc03ae158b3ce87fd684d765a3f1b0e9f79212 100644
--- a/content/browser/renderer_host/render_widget_host_delegate.h
+++ b/content/browser/renderer_host/render_widget_host_delegate.h
@@ -103,6 +103,12 @@ class CONTENT_EXPORT RenderWidgetHostDelegate {
   virtual void ResizeDueToAutoResize(RenderWidgetHostImpl* render_widget_host,
                                      const gfx::Size& new_size) {}
 
+  // Callback to give the browser a chance to handle the specified mouse
+  // event before sending it to the renderer. Returns true if the event was
+  // handled, false otherwise. A true value means no more processing should
+  // happen on the event. The default return value is false.
+  virtual bool PreHandleMouseEvent(const blink::WebMouseEvent& event);
+
   // Callback to give the browser a chance to handle the specified keyboard
   // event before sending it to the renderer. See enum for details on return
   // value.
diff --git a/content/browser/renderer_host/render_widget_host_impl.cc b/content/browser/renderer_host/render_widget_host_impl.cc
index d344972c8322a0590bab8824660088de8e3b646e..37312db1ee0a31099d43b09ad54825c90bdd10dd 100644
--- a/content/browser/renderer_host/render_widget_host_impl.cc
+++ b/content/browser/renderer_host/render_widget_host_impl.cc
@@ -1589,6 +1589,10 @@ void RenderWidgetHostImpl::ForwardMouseEventWithLatencyInfo(
   CHECK_GE(mouse_event.GetType(), WebInputEvent::Type::kMouseTypeFirst);
   CHECK_LE(mouse_event.GetType(), WebInputEvent::Type::kMouseTypeLast);
 
+  if (delegate_ && delegate_->PreHandleMouseEvent(mouse_event)) {
+    return;
+  }
+
   for (auto& mouse_event_callback : mouse_event_callbacks_) {
     if (mouse_event_callback.Run(mouse_event)) {
       return;
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index a4ac414df4c9d8987ebaf85b60ed6ba285e01a07..26f3346c64789137a6610b4f6f6c7baa8f5ea2fe 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -4454,6 +4454,12 @@ void WebContentsImpl::RenderWidgetWasResized(
                              width_changed);
 }
 
+bool WebContentsImpl::PreHandleMouseEvent(const blink::WebMouseEvent& event) {
+  OPTIONAL_TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("content.verbose"),
+                        "WebContentsImpl::PreHandleMouseEvent");
+  return delegate_ ? delegate_->PreHandleMouseEvent(this, event) : false;
+}
+
 void WebContentsImpl::PreHandleDragUpdate(const DropData& drop_data,
                                           const gfx::PointF& client_pt) {
   if (delegate_) {
diff --git a/content/browser/web_contents/web_contents_impl.h b/content/browser/web_contents/web_contents_impl.h
index cf1b560bc7cf6d912a9000a2b9c73666e1a9f1eb..4f0a3e47bad7e58db60ea1a8f75cd3cb00956b09 100644
--- a/content/browser/web_contents/web_contents_impl.h
+++ b/content/browser/web_contents/web_contents_impl.h
@@ -1122,6 +1122,7 @@ class CONTENT_EXPORT WebContentsImpl
 
   double GetPendingZoomLevel(RenderWidgetHostImpl* rwh) override;
 
+  bool PreHandleMouseEvent(const blink::WebMouseEvent& event) override;
   void PreHandleDragUpdate(const DropData& drop_data,
                            const gfx::PointF& client_pt);
   void PreHandleDragExit();
diff --git a/content/public/browser/web_contents_delegate.cc b/content/public/browser/web_contents_delegate.cc
index 6c3ac2cf54bd7c20165b552f8c26da14cab94242..ec95bd923b1d78f74f097eea687bcc4b2292ebba 100644
--- a/content/public/browser/web_contents_delegate.cc
+++ b/content/public/browser/web_contents_delegate.cc
@@ -127,6 +127,12 @@ bool WebContentsDelegate::HandleContextMenu(RenderFrameHost& render_frame_host,
   return false;
 }
 
+bool WebContentsDelegate::PreHandleMouseEvent(
+    WebContents* source,
+    const blink::WebMouseEvent& event) {
+  return false;
+}
+
 KeyboardEventProcessingResult WebContentsDelegate::PreHandleKeyboardEvent(
     WebContents* source,
     const input::NativeWebKeyboardEvent& event) {
diff --git a/content/public/browser/web_contents_delegate.h b/content/public/browser/web_contents_delegate.h
index 320a7288dd87f6e9c100fcff046ddfa7f0f6e179..3cf8ee74905be5ac4ee48b6587fbf91ade462bda 100644
--- a/content/public/browser/web_contents_delegate.h
+++ b/content/public/browser/web_contents_delegate.h
@@ -326,6 +326,13 @@ class CONTENT_EXPORT WebContentsDelegate {
   virtual bool HandleContextMenu(RenderFrameHost& render_frame_host,
                                  const ContextMenuParams& params);
 
+  // Allows delegates to handle mouse events before sending to the renderer.
+  // Returns true if the event was handled, false otherwise. A true value means
+  // no more processing should happen on the event. The default return value is
+  // false.
+  virtual bool PreHandleMouseEvent(WebContents* source,
+                                   const blink::WebMouseEvent& event);
+
   // Allows delegates to handle mouse drag events before sending to the
   // renderer. Returns true if the event was handled, false otherwise. A true
   // value means no more processing should happen on the event. The default