Send Mouse Leave events all the time when we get a ET_MOUSE_EXITED

content/browser/renderer_host/render_widget_host_view_event_handler.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/renderer_host/render_widget_host_view_event_handler.h"
 
 #include "base/metrics/user_metrics_action.h"
 #include "content/browser/renderer_host/input/touch_selection_controller_client_aura.h"
 #include "content/browser/renderer_host/overscroll_controller.h"
 #include "content/browser/renderer_host/render_view_host_delegate.h"
@@ skipping 530 matching lines @@
 bool RenderWidgetHostViewEventHandler::CanRendererHandleEvent(
     const ui::MouseEvent* event,
     bool mouse_locked,
     bool selection_popup) const {
   if (event->type() == ui::ET_MOUSE_CAPTURE_CHANGED)
     return false;
 
   if (event->type() == ui::ET_MOUSE_EXITED) {
     if (mouse_locked || selection_popup)
       return false;
-#if defined(OS_WIN)
+#if defined(OS_WIN) || defined(OS_LINUX)
     // Don't forward the mouse leave message which is received when the context
     // menu is displayed by the page. This confuses the page and causes state
     // changes.
     if (host_view_->IsShowingContextMenu())
       return false;
 #endif
     return true;
   }
 
 #if defined(OS_WIN)
@@ skipping 302 matching lines @@
   host_->ForwardWheelEventWithLatencyInfo(event, latency);
 }
 
 void RenderWidgetHostViewEventHandler::ProcessTouchEvent(
     const blink::WebTouchEvent& event,
     const ui::LatencyInfo& latency) {
   host_->ForwardTouchEventWithLatencyInfo(event, latency);
 }
 
 }  // namespace content