ozone: gpu: Add plumbing for platform-specific gpu messaging

ui/ozone/gpu/ozone_gpu.gyp

Index: ui/ozone/gpu/ozone_gpu.gyp
diff --git a/ui/ozone/gpu/ozone_gpu.gyp b/ui/ozone/gpu/ozone_gpu.gyp
new file mode 100644
index 0000000000000000000000000000000000000000..f0f173e1e4b82c48eb999d0947500c659a58c39d
--- /dev/null
+++ b/ui/ozone/gpu/ozone_gpu.gyp
@@ -0,0 +1,63 @@
+# Copyright 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.
+
+{
+  'variables': {
+    'chromium_code': 1,
+  },
+  'targets': [
+    {
+      'target_name': 'ozone_gpu',
+      'type': '<(component)',
+      'dependencies': [
+        '../../../base/base.gyp:base',
+        '../ozone.gyp:ozone',
+      ],
+      'defines': [
+        'OZONE_GPU_IMPLEMENTATION',
+      ],
+      'variables': {
+        'platform_list_txt_file': '<(SHARED_INTERMEDIATE_DIR)/ui/ozone/platform_list.txt',
+        'constructor_list_cc_file': '<(INTERMEDIATE_DIR)/ui/ozone/gpu/constructor_list.cc',
+      },
+      'include_dirs': [
+        '<(SHARED_INTERMEDIATE_DIR)',
+      ],
+      'sources': [
+        '<(constructor_list_cc_file)',
+        'gpu_platform_support.cc',
+        'gpu_platform_support.h',
+        'gpu_platform_support_host.cc',
+        'gpu_platform_support_host.h',
+      ],
+      'actions': [
+        {
+          'action_name': 'generate_constructor_list',
+          'variables': {
+            'generator_path': '../generate_constructor_list.py',
+          },
+          'inputs': [
+            '<(generator_path)',
+            '<(platform_list_txt_file)',
+          ],
+          'outputs': [
+            '<(constructor_list_cc_file)',
+          ],
+          'action': [
+            'python',
+            '<(generator_path)',
+            '--platform_list=<(platform_list_txt_file)',
+            '--output_cc=<(constructor_list_cc_file)',
+            '--namespace=ui',
+            '--export=OZONE_GPU_EXPORT',
+            '--typename=GpuPlatformSupport',
+            '--typename=GpuPlatformSupportHost',
+            '--include="ui/ozone/gpu/gpu_platform_support.h"',
+            '--include="ui/ozone/gpu/gpu_platform_support_host.h"',
+          ],
+        },
+      ],
+    },
+  ],
+}