Implement browser side of PPB_Printing resource.

ppapi/tests/test_printing.cc

+// 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.
+
+#include "ppapi/tests/test_printing.h"
+
+#include "ppapi/cpp/dev/printing_dev.h"
+#include "ppapi/cpp/instance.h"
+#include "ppapi/tests/testing_instance.h"
+
+namespace {
+  bool g_callback_triggered;
+  int32_t g_callback_result;
+}  // namespace
+
+REGISTER_TEST_CASE(Printing);
+
+class TestPrinting_Dev : public pp::Printing_Dev {
+ public:
+  explicit TestPrinting_Dev(pp::Instance* instance) :
+  pp::Printing_Dev(instance) {}
+  virtual ~TestPrinting_Dev() {}
+  virtual uint32_t QuerySupportedPrintOutputFormats() { return 0; }
+  virtual int32_t PrintBegin(
+      const PP_PrintSettings_Dev& print_settings) { return 0; }
+  virtual pp::Resource PrintPages(
+      const PP_PrintPageNumberRange_Dev* page_ranges,
+  uint32_t page_range_count) {
+    return pp::Resource();
+  }
+  virtual void PrintEnd() {}
+  virtual bool IsPrintScalingDisabled() { return false; }
+};
+
+TestPrinting::TestPrinting(TestingInstance* instance)
+    : TestCase(instance),
+      nested_event_(instance->pp_instance()) {
+  callback_factory_.Initialize(this);
+}
+
+void TestPrinting::RunTests(const std::string& filter) {
+  RUN_TEST(GetDefaultPrintSettings, filter);
+}
+
+std::string TestPrinting::TestGetDefaultPrintSettings() {
+  g_callback_triggered = false;
+  TestPrinting_Dev test_printing(instance_);
+  pp::CompletionCallbackWithOutput<PP_PrintSettings_Dev> cb =
+      callback_factory_.NewCallbackWithOutput(&TestPrinting::Callback);
+  test_printing.GetDefaultPrintSettings(cb);
+  nested_event_.Wait();
+
+  ASSERT_EQ(PP_OK, g_callback_result);
+  ASSERT_TRUE(g_callback_triggered);
+
+  PASS();
+}
+
+void TestPrinting::Callback(int32_t result,
+                            PP_PrintSettings_Dev& /* unused */) {
+  g_callback_triggered = true;
+  g_callback_result = result;
+  nested_event_.Signal();
+}