Pass accessible location change messages to the automation API.

content/public/common/common_param_traits_macros.h

Index: content/public/common/common_param_traits_macros.h
diff --git a/content/public/common/common_param_traits_macros.h b/content/public/common/common_param_traits_macros.h
index 734841a7c5f9e05c0dcdcad04fe67317ceb0cc11..5627e6f02e078d4b88430322c8ea852b293b9e05 100644
--- a/content/public/common/common_param_traits_macros.h
+++ b/content/public/common/common_param_traits_macros.h
@@ -26,12 +26,14 @@
 #include "third_party/WebKit/public/web/WebFrameSerializerCacheControlPolicy.h"
 #include "third_party/WebKit/public/web/WebWindowFeatures.h"
 #include "ui/accessibility/ax_node_data.h"
+#include "ui/accessibility/ax_relative_bounds.h"
 #include "ui/accessibility/ax_tree_update.h"
 #include "ui/base/page_transition_types.h"
 #include "ui/base/window_open_disposition.h"
 #include "ui/gfx/ipc/geometry/gfx_param_traits.h"
 #include "ui/gfx/ipc/gfx_param_traits.h"
 #include "ui/gfx/ipc/skia/gfx_skia_param_traits.h"
+#include "ui/gfx/transform.h"
 
 #undef IPC_MESSAGE_EXPORT
 #define IPC_MESSAGE_EXPORT CONTENT_EXPORT
@@ -278,4 +280,10 @@ IPC_ENUM_TRAITS_MAX_VALUE(ui::AXIntListAttribute,
 IPC_ENUM_TRAITS_MAX_VALUE(ui::AXStringAttribute, ui::AX_STRING_ATTRIBUTE_LAST)
 IPC_ENUM_TRAITS_MAX_VALUE(ui::AXTextAffinity, ui::AX_TEXT_AFFINITY_LAST)
 
+IPC_STRUCT_TRAITS_BEGIN(ui::AXRelativeBounds)
+  IPC_STRUCT_TRAITS_MEMBER(offset_container_id)
+  IPC_STRUCT_TRAITS_MEMBER(bounds)
+  IPC_STRUCT_TRAITS_MEMBER(transform)
+IPC_STRUCT_TRAITS_END()
+
 #endif  // CONTENT_PUBLIC_COMMON_COMMON_PARAM_TRAITS_MACROS_H_