Create a PPAPI host for new resource message routing.

ppapi/ppapi_host.gypi

Index: ppapi/ppapi_host.gypi
diff --git a/ppapi/ppapi_host.gypi b/ppapi/ppapi_host.gypi
new file mode 100644
index 0000000000000000000000000000000000000000..bc99538ddcbf1f9f0f798d3fcb6d449e6bfff596
--- /dev/null
+++ b/ppapi/ppapi_host.gypi
@@ -0,0 +1,32 @@
+# Copyright (c) 2012 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.
+
+{
+   'targets': [
+    {
+      'target_name': 'ppapi_host',
+      'type': '<(component)',
+      'dependencies': [
+        'ppapi.gyp:ppapi_c',
+        'ppapi_internal.gyp:ppapi_proxy',
+        'ppapi_internal.gyp:ppapi_shared',
+        '../base/base.gyp:base',
+        '../ipc/ipc.gyp:ipc',
+        '../ui/surface/surface.gyp:surface',
+      ],
+      'defines': [
+        'PPAPI_HOST_IMPLEMENTATION',
+      ],
+      'sources': [
+        'host/host_factory.h',
+        'host/host_message_context.h',
+        'host/ppapi_host.cc',
+        'host/ppapi_host.h',
+        'host/ppapi_host_export.h',
+        'host/resource_host.cc',
+        'host/resource_host.h',
+      ],
+    },
+  ],
+}