Handle pointer-events: none in browser process hittesting.

content/common/frame_messages.h

Index: content/common/frame_messages.h
diff --git a/content/common/frame_messages.h b/content/common/frame_messages.h
index 1fd22bf592bbfd4f1ea34b9038a44f51b5a1e1d5..153c730d91fb7bdf6159d615193f308a86c69196 100644
--- a/content/common/frame_messages.h
+++ b/content/common/frame_messages.h
@@ -500,6 +500,17 @@ IPC_STRUCT_BEGIN(FrameMsg_SerializeAsMHTML_Params)
   IPC_STRUCT_MEMBER(bool, is_last_frame)
 IPC_STRUCT_END()
 
+// This message is used to send hittesting data from the renderer in order
+// to perform hittesting on the browser process.
+IPC_STRUCT_BEGIN(FrameHostMsg_HittestData_Params)
+  // |surface_id| represents the surface used by this remote frame.
+  IPC_STRUCT_MEMBER(cc::SurfaceId, surface_id)
+
+  // If |ignored_for_hittest| then this surface should be ignored during
+  // hittesting.
+  IPC_STRUCT_MEMBER(bool, ignored_for_hittest)
+IPC_STRUCT_END()
+
 #if defined(OS_MACOSX) || defined(OS_ANDROID)
 // This message is used for supporting popup menus on Mac OS X and Android using
 // native controls. See the FrameHostMsg_ShowPopup message.
@@ -1405,6 +1416,9 @@ IPC_MESSAGE_ROUTED5(FrameHostMsg_Find_Reply,
                     int /* active_match_ordinal */,
                     bool /* final_update */)
 
+// Sends hittesting data needed to perform hittesting on the browser process.
+IPC_MESSAGE_ROUTED1(FrameHostMsg_HittestData, FrameHostMsg_HittestData_Params)
+
 #if defined(OS_MACOSX) || defined(OS_ANDROID)
 
 // Message to show/hide a popup menu using native controls.