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 18892e8df157d35185a1ed50ea36d64b4f8181db..9b0d998759f53466f9c3008f52eb9a61eb565886 100644
--- a/content/common/frame_messages.h
+++ b/content/common/frame_messages.h
@@ -490,6 +490,17 @@ 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.
@@ -1361,6 +1372,9 @@ IPC_MESSAGE_ROUTED2(FrameHostMsg_AdvanceFocus,
                     blink::WebFocusType /* type */,
                     int32_t /* source_routing_id */)
 
+// 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.