Add UMA to track the duration of CheckFrambufferValid

gpu/command_buffer/service/gles2_cmd_decoder.cc

Index: gpu/command_buffer/service/gles2_cmd_decoder.cc
diff --git a/gpu/command_buffer/service/gles2_cmd_decoder.cc b/gpu/command_buffer/service/gles2_cmd_decoder.cc
index 3c0f126881452c0bd00de777adffe0901a3d2aa6..23644dbc4951c2be2ebda58500f494d28a30ecb6 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder.cc
+++ b/gpu/command_buffer/service/gles2_cmd_decoder.cc
@@ -4225,6 +4225,8 @@ bool GLES2DecoderImpl::CheckFramebufferValid(
     GLenum target,
     GLenum gl_error,
     const char* func_name) {
+  SCOPED_UMA_HISTOGRAM_TIMER("GPU.CheckFramebufferValidDuration");
+
   if (!framebuffer) {
     if (surfaceless_)
       return false;