Fix processing of mouse events on MacViews.

ui/views/cocoa/bridged_native_widget.h

 // Copyright 2014 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.
 
 #ifndef UI_VIEWS_COCOA_BRIDGED_NATIVE_WIDGET_H_
 #define UI_VIEWS_COCOA_BRIDGED_NATIVE_WIDGET_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include <memory>
@@ skipping 83 matching lines @@
   // Sets the desired visibility of the window and updates the visibility of
   // descendant windows where necessary.
   void SetVisibilityState(WindowVisibilityState new_state);
 
   // Acquiring mouse capture first steals capture from any existing
   // CocoaMouseCaptureDelegate, then captures all mouse events until released.
   void AcquireCapture();
   void ReleaseCapture();
   bool HasCapture();
 
+  void OnMouseEvent(NSEvent* event);
+
   // Start moving the window, pinned to the mouse cursor, and monitor events.
   // Return MOVE_LOOP_SUCCESSFUL on mouse up or MOVE_LOOP_CANCELED on premature
   // termination via EndMoveLoop() or when window is destroyed during the drag.
   Widget::MoveLoopResult RunMoveLoop(const gfx::Vector2d& drag_offset);
   void EndMoveLoop();
 
   // See views::Widget.
   void SetNativeWindowProperty(const char* key, void* value);
   void* GetNativeWindowProperty(const char* key) const;
 
@@ skipping 142 matching lines @@
   void OnPaintLayer(const ui::PaintContext& context) override;
   void OnDelegatedFrameDamage(const gfx::Rect& damage_rect_in_dip) override;
   void OnDeviceScaleFactorChanged(float device_scale_factor) override;
 
   // Overridden from ui::AcceleratedWidgetMac:
   NSView* AcceleratedWidgetGetNSView() const override;
   void AcceleratedWidgetGetVSyncParameters(
       base::TimeTicks* timebase, base::TimeDelta* interval) const override;
   void AcceleratedWidgetSwapCompleted() override;
 
+  void SendStoredMouseExitedEventToWidget();
+
   // Overridden from BridgedNativeWidgetOwner:
   NSWindow* GetNSWindow() override;
   gfx::Vector2d GetChildWindowOffset() const override;
   bool IsVisibleParent() const override;
   void RemoveChildWindow(BridgedNativeWidget* child) override;
 
   views::NativeWidgetMac* native_widget_mac_;  // Weak. Owns this.
   base::scoped_nsobject<NSWindow> window_;
   base::scoped_nsobject<ViewsNSWindowDelegate> window_delegate_;
   base::scoped_nsobject<BridgedContentView> bridged_view_;
@@ skipping 37 matching lines @@
   // shadow needs to be invalidated when a frame is received for the new shape.
   bool invalidate_shadow_on_frame_swap_ = false;
 
   // Whether the window's visibility is suppressed currently. For opaque non-
   // modal windows, the window's alpha value is set to 0, till the frame from
   // the compositor arrives to avoid "blinking".
   bool initial_visibility_suppressed_ = false;
 
   AssociatedViews associated_views_;
 
+  // We don't immediately send MouseExited notifications when we're inside of a
+  // drag operation.
+  std::unique_ptr<ui::MouseEvent> pendingExitEvent_;
+  bool mouse_inside_ = false;
+
   DISALLOW_COPY_AND_ASSIGN(BridgedNativeWidget);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_COCOA_BRIDGED_NATIVE_WIDGET_H_