Revert of gpu: GPU service scheduler.

gpu/ipc/client/gpu_channel_host.cc

Index: gpu/ipc/client/gpu_channel_host.cc
diff --git a/gpu/ipc/client/gpu_channel_host.cc b/gpu/ipc/client/gpu_channel_host.cc
index 50f9e78c2082deae9aa3069d65053a1b15e81747..aa22cdc6ab475c83b43122296d83ccbb9c1a9d60 100644
--- a/gpu/ipc/client/gpu_channel_host.cc
+++ b/gpu/ipc/client/gpu_channel_host.cc
@@ -70,6 +70,7 @@
       gpu_memory_buffer_manager_(gpu_memory_buffer_manager) {
   next_image_id_.GetNext();
   next_route_id_.GetNext();
+  next_stream_id_.GetNext();
 }
 
 void GpuChannelHost::Connect(const IPC::ChannelHandle& channel_handle,
@@ -244,6 +245,13 @@
   return next_route_id_.GetNext();
 }
 
+int32_t GpuChannelHost::GenerateStreamID() {
+  const int32_t stream_id = next_stream_id_.GetNext();
+  DCHECK_NE(gpu::GPU_STREAM_INVALID, stream_id);
+  DCHECK_NE(gpu::GPU_STREAM_DEFAULT, stream_id);
+  return stream_id;
+}
+
 uint32_t GpuChannelHost::ValidateFlushIDReachedServer(int32_t stream_id,
                                                       bool force_validate) {
   // Store what flush ids we will be validating for all streams.