Create Source/modules/accessibility/ and move most of core/accessibility/* into it

Source/modules/accessibility/AXImageMapLink.cpp

Index: Source/modules/accessibility/AXImageMapLink.cpp
diff --git a/Source/core/accessibility/AXImageMapLink.cpp b/Source/modules/accessibility/AXImageMapLink.cpp
similarity index 96%
rename from Source/core/accessibility/AXImageMapLink.cpp
rename to Source/modules/accessibility/AXImageMapLink.cpp
index 305063ede62aab6376525ad85db2ec8466843443..e02bfe68dcaafe13310872a29b8323496a98e672 100644
--- a/Source/core/accessibility/AXImageMapLink.cpp
+++ b/Source/modules/accessibility/AXImageMapLink.cpp
@@ -27,10 +27,10 @@
  */
 
 #include "config.h"
-#include "core/accessibility/AXImageMapLink.h"
+#include "modules/accessibility/AXImageMapLink.h"
 
-#include "core/accessibility/AXObjectCacheImpl.h"
-#include "core/accessibility/AXRenderObject.h"
+#include "modules/accessibility/AXObjectCacheImpl.h"
+#include "modules/accessibility/AXRenderObject.h"
 
 namespace blink {