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 0311764d146eb7306b52e02432609f3caa272a62..8f9f471a8d207a88ae59c069977ecaac70a09bb4 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 6c7ec195fa64e3a1a718811192c9f6fdbf9463c6..c11744d2246c3df138cdb91f1d4459c65367872c 100644
--- a/content/browser/renderer_host/render_widget_host_delegate.h
+++ b/content/browser/renderer_host/render_widget_host_delegate.h
@@ -104,6 +104,12 @@ 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 fe26e2aeba6fc03201373693d4afa2b78c89e54a..ab880a04a9638b348192a4c85785bc769e7dd83b 100644
--- a/content/browser/renderer_host/render_widget_host_impl.cc
+++ b/content/browser/renderer_host/render_widget_host_impl.cc
@@ -1562,6 +1562,10 @@ 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 6910e1e54995027933abc5724afac9129df7519c..8011e752e23f62162cb2fff2461dfe5948af6dad 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -4586,6 +4586,12 @@ 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 48cbaff6b6adf2b0ead49e2a85302165291f4182..d8c33a304eaed2d3669284c1a7a5e6e631d65b5e 100644
--- a/content/browser/web_contents/web_contents_impl.h
+++ b/content/browser/web_contents/web_contents_impl.h
@@ -1133,6 +1133,7 @@ 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 02ec57eeb67dd5e5e0ff250853599c88c2a75ed0..5f104dccc8a4b6d50d10aac01b3fe73b781e0ac1 100644
--- a/content/public/browser/web_contents_delegate.cc
+++ b/content/public/browser/web_contents_delegate.cc
@@ -126,6 +126,12 @@ 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 234d6d89d1c8c7f333b96f35dacb73daeecf7b17..2bb0499064346697fc19d012740fcacdda40f722 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