MacViews: Implemented Drag & Drop

ui/base/dragdrop/os_exchange_data.h

Index: ui/base/dragdrop/os_exchange_data.h
diff --git a/ui/base/dragdrop/os_exchange_data.h b/ui/base/dragdrop/os_exchange_data.h
index 5c237587c16216f35ba33894f1e69bb463c3d43f..19049147e444052afe5376384b9c999612f163b6 100644
--- a/ui/base/dragdrop/os_exchange_data.h
+++ b/ui/base/dragdrop/os_exchange_data.h
@@ -15,11 +15,13 @@
 #include <objidl.h>
 #endif
 
+#include "base/event_types.h"
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "ui/base/clipboard/clipboard.h"
 #include "ui/base/dragdrop/download_file_interface.h"
 #include "ui/base/ui_base_export.h"
+#include "ui/events/event.h"
 
 class GURL;
 
@@ -136,6 +138,13 @@ class UI_BASE_EXPORT OSExchangeData {
     virtual const gfx::ImageSkia& GetDragImage() const = 0;
     virtual const gfx::Vector2d& GetDragImageOffset() const = 0;
 #endif
+
+#if defined(OS_MACOSX)
+    virtual void SetDragImage(const gfx::ImageSkia& image) = 0;

[tapted, 2016/05/11 12:36:15]

it's probably nicer to expose the existing Aura methods on Mac (e.g. replace
USE_AURA -> TOOLKIT_VIEWS), and just ignore cursor_offset if we don't use it
(yet)

[spqchan, 2016/05/23 21:26:21]

I added defined(OS_MACOSX), I ran into some trouble when I simply replaced
USE_AURA with TOOLKIT_VIEWS

+    virtual const gfx::ImageSkia& GetDragImage() const = 0;
+    virtual void SetNativeEvent(const base::NativeEvent& event) = 0;
+    virtual const base::NativeEvent& GetNativeEvent() const = 0;
+#endif
   };
 
   // Creates the platform specific Provider.