Plumb cc::LatencyInfo through command buffer and output surface

content/common/gpu/texture_image_transport_surface.cc

Index: content/common/gpu/texture_image_transport_surface.cc
diff --git a/content/common/gpu/texture_image_transport_surface.cc b/content/common/gpu/texture_image_transport_surface.cc
index a40b60df36e7bc9c505f4483869a54e395342d41..b2159b7ad8322b4d456c5fa6157d1bcc36b80e4e 100644
--- a/content/common/gpu/texture_image_transport_surface.cc
+++ b/content/common/gpu/texture_image_transport_surface.cc
@@ -201,8 +201,14 @@ void TextureImageTransportSurface::OnWillDestroyStub(
   stub_destroyed_ = true;
 }
 
+void TextureImageTransportSurface::SetLatencyInfo(
+    const cc::LatencyInfo& latency_info) {
+  latency_info_ = latency_info;
+}
+
 bool TextureImageTransportSurface::SwapBuffers() {
   DCHECK(backbuffer_suggested_allocation_);
+
   if (!frontbuffer_suggested_allocation_)
     return true;
 
@@ -225,6 +231,7 @@ bool TextureImageTransportSurface::SwapBuffers() {
   // so we do not leak a texture in the mailbox.
   AddRef();
 
+  params.latency_info = latency_info_;
   helper_->SendAcceleratedSurfaceBuffersSwapped(params);
 
   DCHECK(!is_swap_buffers_pending_);
@@ -267,6 +274,7 @@ bool TextureImageTransportSurface::PostSubBuffer(
   // so we do not leak a texture in the mailbox.
   AddRef();
 
+  params.latency_info = latency_info_;
   helper_->SendAcceleratedSurfacePostSubBuffer(params);
 
   DCHECK(!is_swap_buffers_pending_);