Notification badges are only supported on Android.

chrome/browser/notifications/platform_notification_service_interactive_uitest.cc

 // 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.
 
 #include <memory>
 #include <string>
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
@@ skipping 20 matching lines @@
 #include "testing/gmock/include/gmock/gmock.h"
 #include "third_party/WebKit/public/platform/modules/permissions/permission_status.mojom.h"
 #include "ui/base/l10n/l10n_util.h"
 
 // -----------------------------------------------------------------------------
 
 // Dimensions of the icon.png resource in the notification test data directory.
 const int kIconWidth = 100;
 const int kIconHeight = 100;
 
-// The maximum width and height of badges. Oversized images are scaled down to
-// these values.
-const int kMaxBadgeSize = 96;
-
 const int kNotificationVibrationPattern[] = { 100, 200, 300 };
 const double kNotificationTimestamp = 621046800000.;
 
 class PlatformNotificationServiceBrowserTest : public InProcessBrowserTest {
  public:
   PlatformNotificationServiceBrowserTest();
   ~PlatformNotificationServiceBrowserTest() override {}
 
   // InProcessBrowserTest overrides.
   void SetUpCommandLine(base::CommandLine* command_line) override;
@@ skipping 218 matching lines @@
 
   // We don't use or check the notification's direction and language.
   const Notification& all_options_notification =
       ui_manager()->GetNotificationAt(1);
   EXPECT_EQ("Title", base::UTF16ToUTF8(all_options_notification.title()));
   EXPECT_EQ("Contents", base::UTF16ToUTF8(all_options_notification.message()));
   EXPECT_EQ("replace-id", all_options_notification.tag());
   EXPECT_FALSE(all_options_notification.icon().IsEmpty());
   EXPECT_EQ(kIconWidth, all_options_notification.icon().Width());
   EXPECT_EQ(kIconHeight, all_options_notification.icon().Height());
-  EXPECT_FALSE(all_options_notification.small_image().IsEmpty());
-  EXPECT_EQ(kMaxBadgeSize, all_options_notification.small_image().Width());
-  EXPECT_EQ(kMaxBadgeSize, all_options_notification.small_image().Height());
+  EXPECT_TRUE(all_options_notification.small_image().IsEmpty());
   EXPECT_TRUE(all_options_notification.renotify());
   EXPECT_TRUE(all_options_notification.silent());
   EXPECT_TRUE(all_options_notification.never_timeout());
   EXPECT_DOUBLE_EQ(kNotificationTimestamp,
                    all_options_notification.timestamp().ToJsTime());
   EXPECT_EQ(1u, all_options_notification.buttons().size());
   EXPECT_EQ("actionTitle",
             base::UTF16ToUTF8(all_options_notification.buttons()[0].title));
   EXPECT_FALSE(all_options_notification.buttons()[0].icon.IsEmpty());
   EXPECT_EQ(kIconWidth, all_options_notification.buttons()[0].icon.Width());
@@ skipping 195 matching lines @@
   EXPECT_EQ("actionTitle2", base::UTF16ToUTF8(notification.buttons()[1].title));
 
   notification.delegate()->ButtonClick(0);
   ASSERT_TRUE(RunScript("GetMessageFromWorker()", &script_result));
   EXPECT_EQ("action_button_click actionId1", script_result);
 
   notification.delegate()->ButtonClick(1);
   ASSERT_TRUE(RunScript("GetMessageFromWorker()", &script_result));
   EXPECT_EQ("action_button_click actionId2", script_result);
 }