fuchsia: Stub a few functions to get Debug linking

AmountOfAvailablePhysicalMemoryImpl isn't currently implementable as
there's no system call for it.

The GPU collection ones, there's no GPU access set up yet at all.

Bug: 706592, 707031, 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: Ib161bf45120ff13127ad198d57017ffc6d7c9a79
Reviewed-on: https://chromium-review.googlesource.com/592642Reviewed-by: Nico Weber <thakis@chromium.org>
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#490815}

base/sys_info_fuchsia.cc

@@ -6,6 +6,8 @@
 
 #include <magenta/syscalls.h>
 
+#include "base/logging.h"
+
 namespace base {
 
 // static
@@ -13,6 +15,13 @@ int64_t SysInfo::AmountOfPhysicalMemoryImpl() {
   return mx_system_get_physmem();
 }
 
+// static
+int64_t SysInfo::AmountOfAvailablePhysicalMemoryImpl() {
+  // TODO(fuchsia): https://crbug.com/706592 This is not exposed.
+  NOTREACHED();
+  return 0;
+}
+
 // static
 int SysInfo::NumberOfProcessors() {
   return mx_system_get_num_cpus();

gpu/config/BUILD.gn

@@ -113,6 +113,10 @@ source_set("config_sources") {
     "gpu_util.h",
   ]
 
+  if (is_fuchsia) {
+    sources += [ "gpu_info_collector_fuchsia.cc" ]
+  }
+
   sources += process_json_outputs
 
   configs += [

gpu/config/gpu_info_collector_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/config/gpu_info_collector.h"
+
+#include "base/logging.h"
+
+namespace gpu {
+
+CollectInfoResult CollectBasicGraphicsInfo(GPUInfo* gpu_info) {
+  NOTIMPLEMENTED();  // TODO(fuchsia): https://crbug.com/707031 Some day.
+  return kCollectInfoNonFatalFailure;
+}
+
+CollectInfoResult CollectDriverInfoGL(GPUInfo* gpu_info) {
+  NOTIMPLEMENTED();  // TODO(fuchsia): https://crbug.com/707031 Some day.
+  return kCollectInfoNonFatalFailure;
+}
+
+}  // namespace gpu