mus: Modify mojo command buffer to match current chrome gpu ipc.

mojo/gles2/command_buffer_client_impl.cc

Index: mojo/gles2/command_buffer_client_impl.cc
diff --git a/mojo/gles2/command_buffer_client_impl.cc b/mojo/gles2/command_buffer_client_impl.cc
index cbf9b3ea08920c533ec7d7d73704f56c41a02e92..646c582c26c11116094441dd9237d5d1f4e98e56 100644
--- a/mojo/gles2/command_buffer_client_impl.cc
+++ b/mojo/gles2/command_buffer_client_impl.cc
@@ -84,7 +84,7 @@ CommandBufferClientImpl::CommandBufferClientImpl(
                            std::move(command_buffer_handle), 0u),
                        async_waiter);
   command_buffer_.set_connection_error_handler(
-      [this]() { DidLoseContext(gpu::error::kUnknown); });
+      [this]() { Destroyed(gpu::error::kUnknown, gpu::error::kLostContext); });
 }
 
 CommandBufferClientImpl::~CommandBufferClientImpl() {}
@@ -102,7 +102,7 @@ bool CommandBufferClientImpl::Initialize() {
 
   shared_state()->Initialize();
 
-  mus::mojom::CommandBufferLostContextObserverPtr observer_ptr;
+  mus::mojom::CommandBufferObserverPtr observer_ptr;
   observer_binding_.Bind(GetProxy(&observer_ptr), async_waiter_);
 
   mus::mojom::CommandBufferInitializeResultPtr initialize_result;
@@ -285,13 +285,27 @@ void CommandBufferClientImpl::SignalQuery(uint32_t query,
   NOTIMPLEMENTED();
 }
 
-void CommandBufferClientImpl::DidLoseContext(int32_t lost_reason) {
-  last_state_.error = gpu::error::kLostContext;
+void CommandBufferClientImpl::Destroyed(int32_t lost_reason, int32_t error) {
   last_state_.context_lost_reason =
       static_cast<gpu::error::ContextLostReason>(lost_reason);
+  last_state_.error = static_cast<gpu::error::Error>(error);
   delegate_->ContextLost();
 }
 
+void CommandBufferClientImpl::SignalAck(uint32_t id) {
+}
+
+void CommandBufferClientImpl::SwapBuffersCompleted(int32_t result) {
+}
+
+void CommandBufferClientImpl::UpdateState(
+    const gpu::CommandBuffer::State& state) {
+}
+
+void CommandBufferClientImpl::UpdateVSyncParameters(int64_t timebase,
+                                                    int64_t interval) {
+}
+
 void CommandBufferClientImpl::TryUpdateState() {
   if (last_state_.error == gpu::error::kNoError)
     shared_state()->Read(&last_state_);
@@ -307,7 +321,7 @@ void CommandBufferClientImpl::MakeProgressAndUpdateState() {
   if (!command_buffer_.WaitForIncomingResponse()) {
     VLOG(1) << "Channel encountered error while waiting for command buffer.";
     // TODO(piman): is it ok for this to re-enter?
-    DidLoseContext(gpu::error::kUnknown);
+    Destroyed(gpu::error::kUnknown, gpu::error::kLostContext);
     return;
   }