WIP: Plumbing input event latency reporting through Mus GPU.

gpu/gles2_conform_support/egl/context.cc

Index: gpu/gles2_conform_support/egl/context.cc
diff --git a/gpu/gles2_conform_support/egl/context.cc b/gpu/gles2_conform_support/egl/context.cc
index f617144c1aa02977dba2a9b75794b20b35e8368f..11171d0d12ac179c3d5754ef9ac1cec58a7e4cf2 100644
--- a/gpu/gles2_conform_support/egl/context.cc
+++ b/gpu/gles2_conform_support/egl/context.cc
@@ -229,6 +229,9 @@ bool Context::CanWaitUnverifiedSyncToken(const gpu::SyncToken& sync_token) {
   return false;
 }
 
+void Context::AddLatencyInfo(const std::vector<ui::LatencyInfo>& latency_info) {
+}
+
 void Context::ApplyCurrentContext(gl::GLSurface* current_surface) {
   DCHECK(HasService());
   // The current_surface will be the same as