Track plugin input event latency

ppapi/proxy/graphics_2d_resource.cc

Index: ppapi/proxy/graphics_2d_resource.cc
diff --git a/ppapi/proxy/graphics_2d_resource.cc b/ppapi/proxy/graphics_2d_resource.cc
index 0cf746570042c15c50c751849e7931bdbe067115..97bc05ab4a220888c20b2da9c95e14ac7789cac0 100644
--- a/ppapi/proxy/graphics_2d_resource.cc
+++ b/ppapi/proxy/graphics_2d_resource.cc
@@ -12,6 +12,7 @@
 #include "ppapi/c/ppb_graphics_2d.h"
 #include "ppapi/proxy/dispatch_reply_message.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
+#include "ppapi/proxy/plugin_globals.h"
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ppapi/shared_impl/ppapi_globals.h"
 #include "ppapi/shared_impl/resource_tracker.h"
@@ -65,6 +66,8 @@ void Graphics2DResource::PaintImageData(PP_Resource image_data,
     return;
   }
 
+  PluginGlobals::Get()->OnGraphicsInvalidation(pp_instance());
+
   PP_Rect dummy;
   memset(&dummy, 0, sizeof(PP_Rect));
   Post(RENDERER, PpapiHostMsg_Graphics2D_PaintImageData(
@@ -74,6 +77,7 @@ void Graphics2DResource::PaintImageData(PP_Resource image_data,
 
 void Graphics2DResource::Scroll(const PP_Rect* clip_rect,
                                 const PP_Point* amount) {
+  PluginGlobals::Get()->OnGraphicsInvalidation(pp_instance());
   PP_Rect dummy;
   memset(&dummy, 0, sizeof(PP_Rect));
   Post(RENDERER, PpapiHostMsg_Graphics2D_Scroll(
@@ -94,6 +98,7 @@ void Graphics2DResource::ReplaceContents(PP_Resource image_data) {
         "Graphics2DResource.PaintImageData: Bad image resource.");
     return;
   }
+  PluginGlobals::Get()->OnGraphicsInvalidation(pp_instance());
   enter_image.object()->SetIsCandidateForReuse();
 
   Post(RENDERER, PpapiHostMsg_Graphics2D_ReplaceContents(
@@ -122,9 +127,12 @@ int32_t Graphics2DResource::Flush(scoped_refptr<TrackedCallback> callback) {
     return PP_ERROR_INPROGRESS;  // Can't have >1 flush pending.
   current_flush_callback_ = callback;
 
+  std::vector<ui::LatencyInfo> latency_info;
+  PluginGlobals::Get()->OnGraphicsFlush(&latency_info, pp_instance());
+
   Call<PpapiPluginMsg_Graphics2D_FlushAck>(
       RENDERER,
-      PpapiHostMsg_Graphics2D_Flush(),
+      PpapiHostMsg_Graphics2D_Flush(latency_info),
       base::Bind(&Graphics2DResource::OnPluginMsgFlushACK, this));
   return PP_OK_COMPLETIONPENDING;
 }