fuchsia: Stub some unneeded gfx methods

Fuchsia is initially trying to get a headless build up and
running so gpu methods are unnecessary.

Bug: 743296
Cq-Include-Trybots: master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
Change-Id: I5acc71a1be7b2058538a9e0d8d2bef4ba3ca4a52
Reviewed-on: https://chromium-review.googlesource.com/596506Reviewed-by: John Bauman <jbauman@chromium.org>
Reviewed-by: Nico Weber <thakis@chromium.org>
Commit-Queue: Scott Graham <scottmg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#491532}

gpu/config/gpu_info_collector_fuchsia.cc

@@ -18,4 +18,8 @@ CollectInfoResult CollectDriverInfoGL(GPUInfo* gpu_info) {
   return kCollectInfoNonFatalFailure;
 }
 
+CollectInfoResult CollectContextGraphicsInfo(GPUInfo* gpu_info) {
+  return CollectBasicGraphicsInfo(gpu_info);
+}
+
 }  // namespace gpu

gpu/ipc/service/BUILD.gn

@@ -126,6 +126,9 @@ target(link_target_type, "ipc_service_sources") {
   if (use_ozone) {
     deps += [ "//ui/ozone" ]
   }
+  if (is_fuchsia) {
+    sources += [ "image_transport_surface_fuchsia.cc" ]
+  }
 }
 
 source_set("test_support") {

gpu/ipc/service/image_transport_surface_fuchsia.cc

+// Copyright 2017 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 "gpu/ipc/service/image_transport_surface.h"
+
+#include "base/logging.h"
+#include "ui/gl/gl_surface_stub.h"
+
+namespace gpu {
+
+// static
+scoped_refptr<gl::GLSurface> ImageTransportSurface::CreateNativeSurface(
+    base::WeakPtr<ImageTransportSurfaceDelegate> delegate,
+    SurfaceHandle surface_handle,
+    gl::GLSurfaceFormat format) {
+  DCHECK(gl::GetGLImplementation() == gl::kGLImplementationMockGL ||
+         gl::GetGLImplementation() == gl::kGLImplementationStubGL);
+  return new gl::GLSurfaceStub;
+}
+
+}  // namespace gpu