Remove TextureImageTransportSurface

content/common/gpu/null_transport_surface.cc

+// Copyright (c) 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "content/common/gpu/null_transport_surface.h"
+
+#include "base/command_line.h"
+#include "content/common/gpu/gpu_channel.h"
+#include "content/common/gpu/gpu_channel_manager.h"
+#include "content/common/gpu/gpu_command_buffer_stub.h"
+#include "content/public/common/content_switches.h"
+#include "gpu/command_buffer/service/context_group.h"
+
+namespace content {
+
+NullTransportSurface::NullTransportSurface(
+    GpuChannelManager* manager,
+    GpuCommandBufferStub* stub,
+    const gfx::GLSurfaceHandle& handle)
+    : PassThroughImageTransportSurface(manager,
+                                       stub,
+                                       manager->GetDefaultOffscreenSurface()),
+      parent_client_id_(handle.parent_client_id) {
+}
+
+NullTransportSurface::~NullTransportSurface() {
+}
+
+bool NullTransportSurface::Initialize() {
+  if (!surface())
+    return false;
+
+  if (!PassThroughImageTransportSurface::Initialize())
+    return false;
+
+  GpuChannel* parent_channel =
+      GetHelper()->manager()->LookupChannel(parent_client_id_);
+  if (parent_channel) {
+    const base::CommandLine* command_line =
+        base::CommandLine::ForCurrentProcess();
+    if (command_line->HasSwitch(switches::kUIPrioritizeInGpuProcess))
+      GetHelper()->SetPreemptByFlag(parent_channel->GetPreemptionFlag());
+  }
+
+  return true;
+}
+
+void NullTransportSurface::Destroy() {
+  // Do not destroy |surface_| since we use the shared offscreen surface.
+}
+
+bool NullTransportSurface::SwapBuffers() {
+  NOTREACHED();

[piman, 2014/09/30 03:06:47]

nit: technically, the client code could call swap and reach this code.

[no sievers, 2014/09/30 17:21:32]

Changed to NOTIMPLEMENTED().

+  return false;
+}
+
+bool NullTransportSurface::PostSubBuffer(
+    int x, int y, int width, int height) {
+  NOTREACHED();
+  return false;
+}
+
+void NullTransportSurface::SendVSyncUpdateIfAvailable() {
+  NOTREACHED();
+}
+
+}  // namespace content