WIP: Plumbing input event latency reporting through Mus GPU.

cc/output/in_process_context_provider.cc

Index: cc/output/in_process_context_provider.cc
diff --git a/cc/output/in_process_context_provider.cc b/cc/output/in_process_context_provider.cc
index 9fd6d182417774756ff437c68fd623d87de68394..7bfcdfc95b56dcb0e91eb7f82d34687c179ec0f1 100644
--- a/cc/output/in_process_context_provider.cc
+++ b/cc/output/in_process_context_provider.cc
@@ -151,4 +151,9 @@ void InProcessContextProvider::SetUpdateVSyncParametersCallback(
   context_->SetUpdateVSyncParametersCallback(callback);
 }
 
+void InProcessContextProvider::SetLatencyInfo(
+    const std::vector<ui::LatencyInfo>& latency_info) {
+  context_->SetLatencyInfo(latency_info);
+}
+
 }  // namespace cc