Add PPB_VarArray_Dev support - part 1.

ppapi/thunk/ppb_var_array_thunk.cc

Index: ppapi/thunk/ppb_var_array_thunk.cc
diff --git a/ppapi/thunk/ppb_var_array_thunk.cc b/ppapi/thunk/ppb_var_array_thunk.cc
new file mode 100644
index 0000000000000000000000000000000000000000..7321424d2994f7aa79faa70224eed8214aa63ae3
--- /dev/null
+++ b/ppapi/thunk/ppb_var_array_thunk.cc
@@ -0,0 +1,74 @@
+// Copyright (c) 2013 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 "ppapi/c/dev/ppb_var_array_dev.h"
+#include "ppapi/shared_impl/array_var.h"
+#include "ppapi/shared_impl/proxy_lock.h"
+#include "ppapi/thunk/thunk.h"
+
+namespace ppapi {
+namespace thunk {
+
+namespace {
+
+PP_Var Create() {
+  ProxyAutoLock lock;
+
+  // Var tracker will hold a reference to this object.
+  ArrayVar* var = new ArrayVar();
+  return var->GetPPVar();
+}
+
+PP_Var Get(PP_Var array, uint32_t index) {
+  ProxyAutoLock lock;
+
+  ArrayVar* array_var = ArrayVar::FromPPVar(array);
+  if (!array_var)
+    return PP_MakeUndefined();
+  return array_var->Get(index);
+}
+
+PP_Bool Set(PP_Var array, uint32_t index, PP_Var value) {
+  ProxyAutoLock lock;
+
+  ArrayVar* array_var = ArrayVar::FromPPVar(array);
+  if (!array_var)
+    return PP_FALSE;
+  return array_var->Set(index, value);
+}
+
+uint32_t GetLength(PP_Var array) {
+  ProxyAutoLock lock;
+
+  ArrayVar* array_var = ArrayVar::FromPPVar(array);
+  if (!array_var)
+    return 0;
+  return array_var->GetLength();
+}
+
+PP_Bool SetLength(PP_Var array, uint32_t length) {
+  ProxyAutoLock lock;
+
+  ArrayVar* array_var = ArrayVar::FromPPVar(array);
+  if (!array_var)
+    return PP_FALSE;
+  return array_var->SetLength(length);
+}
+
+const PPB_VarArray_Dev_0_1 g_ppb_vararray_0_1_thunk = {
+  &Create,
+  &Get,
+  &Set,
+  &GetLength,
+  &SetLength
+};
+
+}  // namespace
+
+const PPB_VarArray_Dev_0_1* GetPPB_VarArray_Dev_0_1_Thunk() {
+  return &g_ppb_vararray_0_1_thunk;
+}
+
+}  // namespace thunk
+}  // namespace ppapi