Add IPC messages to transfer compositor protos

content/renderer/render_widget.cc

Index: content/renderer/render_widget.cc
diff --git a/content/renderer/render_widget.cc b/content/renderer/render_widget.cc
index 9a8aaf1e0201b97512c4fdce21c358c84732f9cd..3f4c190c2c644a4e696b0d75070ebeee702ca03c 100644
--- a/content/renderer/render_widget.cc
+++ b/content/renderer/render_widget.cc
@@ -753,6 +753,7 @@ bool RenderWidget::OnMessageReceived(const IPC::Message& message) {
     IPC_MESSAGE_HANDLER(InputMsg_ImeEventAck, OnImeEventAck)
     IPC_MESSAGE_HANDLER(ViewMsg_ShowImeIfNeeded, OnShowImeIfNeeded)
 #endif
+    IPC_MESSAGE_HANDLER(ViewMsg_HandleCompositorProto, OnHandleCompositorProto)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
@@ -1753,6 +1754,11 @@ void RenderWidget::OnSetSurfaceIdNamespace(uint32_t surface_id_namespace) {
     compositor_->SetSurfaceIdNamespace(surface_id_namespace);
 }
 
+void RenderWidget::OnHandleCompositorProto(const std::vector<uint8_t>& proto) {
+  if (compositor_)
+    compositor_->OnHandleCompositorProto(proto);
+}
+
 void RenderWidget::showImeIfNeeded() {
   OnShowImeIfNeeded();
 }
@@ -2047,6 +2053,10 @@ void RenderWidget::UpdateSelectionBounds() {
   UpdateCompositionInfo(false);
 }
 
+void RenderWidget::ForwardCompositorProto(const std::vector<uint8_t>& proto) {
+  Send(new ViewHostMsg_ForwardCompositorProto(routing_id_, proto));
+}
+
 // Check blink::WebTextInputType and ui::TextInputType is kept in sync.
 #define STATIC_ASSERT_WTIT_ENUM_MATCH(a, b)            \
     static_assert(int(blink::WebTextInputType##a)      \