Fix print settings units conversion for PPB_Printing.

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;
+bool g_callback_triggered;
+int32_t g_callback_result;
+PP_PrintSettings_Dev g_print_settings;
 }  // 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; }
@@ skipping 22 matching lines @@
   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);
 
+  // Sanity check the |printable_area|, |content_area| and |paper_size| members.
+  // It is possible these values are outside these ranges but it shouldn't
+  // happen in practice and probably means there is an error in computing
+  // the default print settings. These values are in points.
+  ASSERT_TRUE(g_print_settings.printable_area.point.x < 200);
+  ASSERT_TRUE(g_print_settings.printable_area.point.y < 200);
+  ASSERT_TRUE(g_print_settings.printable_area.size.width < 2000);
+  ASSERT_TRUE(g_print_settings.printable_area.size.height < 2000);
+
+  ASSERT_TRUE(g_print_settings.content_area.point.x < 200);
+  ASSERT_TRUE(g_print_settings.content_area.point.y < 200);
+  ASSERT_TRUE(g_print_settings.content_area.size.width < 2000);
+  ASSERT_TRUE(g_print_settings.content_area.size.height< 2000);
+
+  ASSERT_TRUE(g_print_settings.paper_size.width < 2000);
+  ASSERT_TRUE(g_print_settings.paper_size.height < 2000);
+
   PASS();
 }
 
 void TestPrinting::Callback(int32_t result,
-                            PP_PrintSettings_Dev& /* unused */) {
+                            PP_PrintSettings_Dev& print_settings) {
   g_callback_triggered = true;
   g_callback_result = result;
+  g_print_settings = print_settings;
   nested_event_.Signal();
 }