Track plugin input event latency

ppapi/proxy/ppapi_messages.h

Index: ppapi/proxy/ppapi_messages.h
diff --git a/ppapi/proxy/ppapi_messages.h b/ppapi/proxy/ppapi_messages.h
index e099b36709f4f179bbe684adc8ae80c08d766860..4040263f042c5107a088a8e0f64c1c1080cc316c 100644
--- a/ppapi/proxy/ppapi_messages.h
+++ b/ppapi/proxy/ppapi_messages.h
@@ -73,6 +73,11 @@
 #include "ppapi/shared_impl/socket_option_data.h"
 #include "ppapi/shared_impl/url_request_info_data.h"
 #include "ppapi/shared_impl/url_response_info_data.h"
+#include "ui/events/latency_info.h"
+
+#if !defined(OS_NACL)
+#include "content/common/content_param_traits_macros.h"
+#endif
 
 #undef IPC_MESSAGE_EXPORT
 #define IPC_MESSAGE_EXPORT PPAPI_PROXY_EXPORT
@@ -121,6 +126,25 @@ IPC_ENUM_TRAITS(PP_VideoDecodeError_Dev)
 IPC_ENUM_TRAITS(PP_VideoDecoder_Profile)
 IPC_ENUM_TRAITS_MAX_VALUE(PP_VideoFrame_Format, PP_VIDEOFRAME_FORMAT_LAST)
 
+// Copied from "content/common/content_param_traits_macros.h"
+// We can eliminate the duplication if we have a content_common_nacl.gyp build.

[piman, 2014/04/25 01:59:43]

Can we just move the definition into some, say, ui_param_traits.h?

[Yufeng Shen (Slow to review), 2014/05/01 21:29:52]

moved it into 
ui/events/latency_info_param_traits_macros.h

+#if defined(OS_NACL)
+IPC_ENUM_TRAITS_MAX_VALUE(ui::LatencyComponentType,
+                          ui::LATENCY_COMPONENT_TYPE_LAST)
+
+IPC_STRUCT_TRAITS_BEGIN(ui::LatencyInfo::LatencyComponent)
+  IPC_STRUCT_TRAITS_MEMBER(sequence_number)
+  IPC_STRUCT_TRAITS_MEMBER(event_time)
+  IPC_STRUCT_TRAITS_MEMBER(event_count)
+IPC_STRUCT_TRAITS_END()
+
+IPC_STRUCT_TRAITS_BEGIN(ui::LatencyInfo)
+  IPC_STRUCT_TRAITS_MEMBER(latency_components)
+  IPC_STRUCT_TRAITS_MEMBER(trace_id)
+  IPC_STRUCT_TRAITS_MEMBER(terminated)
+IPC_STRUCT_TRAITS_END()
+#endif  // defined(OS_NACL)
+
 IPC_STRUCT_TRAITS_BEGIN(PP_Point)
   IPC_STRUCT_TRAITS_MEMBER(x)
   IPC_STRUCT_TRAITS_MEMBER(y)
@@ -300,6 +324,7 @@ IPC_STRUCT_TRAITS_BEGIN(ppapi::InputEventData)
   IPC_STRUCT_TRAITS_MEMBER(touches)
   IPC_STRUCT_TRAITS_MEMBER(changed_touches)
   IPC_STRUCT_TRAITS_MEMBER(target_touches)
+  IPC_STRUCT_TRAITS_MEMBER(latency_info)
 IPC_STRUCT_TRAITS_END()
 
 IPC_STRUCT_TRAITS_BEGIN(ppapi::HostPortPair)
@@ -1417,7 +1442,8 @@ IPC_MESSAGE_CONTROL1(PpapiHostMsg_Graphics2D_SetScale,
                      float /* scale */)
 
 // Graphics2D, plugin -> host -> plugin
-IPC_MESSAGE_CONTROL0(PpapiHostMsg_Graphics2D_Flush)
+IPC_MESSAGE_CONTROL1(PpapiHostMsg_Graphics2D_Flush,
+                     std::vector<ui::LatencyInfo> /* latency_info */)
 IPC_MESSAGE_CONTROL0(PpapiPluginMsg_Graphics2D_FlushAck)
 
 IPC_MESSAGE_CONTROL2(PpapiHostMsg_Graphics2D_ReadImageData,