Stop using UIPasteboardChangedNotification.

components/open_from_clipboard/clipboard_recent_content_ios_unittest.mm

Index: components/open_from_clipboard/clipboard_recent_content_ios_unittest.mm
diff --git a/components/open_from_clipboard/clipboard_recent_content_ios_unittest.mm b/components/open_from_clipboard/clipboard_recent_content_ios_unittest.mm
index 39f127e7c3e36a1b02bca844b4fada507af88446..37c36a1ab384114f12c61661d07d6129c6a94dc3 100644
--- a/components/open_from_clipboard/clipboard_recent_content_ios_unittest.mm
+++ b/components/open_from_clipboard/clipboard_recent_content_ios_unittest.mm
@@ -44,6 +44,22 @@ const char kAppSpecificScheme[] = "test";
 NSTimeInterval kSevenHours = 60 * 60 * 7;
 }  // namespace
 
+class ClipboardRecentContentIOSWithFakeUptime
+    : public ClipboardRecentContentIOS {
+ public:
+  ClipboardRecentContentIOSWithFakeUptime(const std::string& application_scheme,
+                                          NSUserDefaults* group_user_defaults)
+      : ClipboardRecentContentIOS(application_scheme, group_user_defaults) {}
+  // Sets the uptime.
+  void SetUptime(base::TimeDelta uptime) { uptime_ = uptime; }
+
+ protected:
+  base::TimeDelta Uptime() const override { return uptime_; }
+
+ private:
+  base::TimeDelta uptime_;
+};
+
 class ClipboardRecentContentIOSTest : public ::testing::Test {
  protected:
   ClipboardRecentContentIOSTest() {
@@ -59,8 +75,9 @@ class ClipboardRecentContentIOSTest : public ::testing::Test {
 
   void ResetClipboardRecentContent(const std::string& application_scheme,
                                    base::TimeDelta time_delta) {
-    clipboard_content_.reset(
-        new ClipboardRecentContentIOS(application_scheme, time_delta));
+    clipboard_content_.reset(new ClipboardRecentContentIOSWithFakeUptime(
+        application_scheme, [NSUserDefaults standardUserDefaults]));
+    clipboard_content_->SetUptime(time_delta);
   }
 
   void SetStoredPasteboardChangeDate(NSDate* changeDate) {
@@ -74,7 +91,7 @@ class ClipboardRecentContentIOSTest : public ::testing::Test {
   }
 
  protected:
-  std::unique_ptr<ClipboardRecentContentIOS> clipboard_content_;
+  std::unique_ptr<ClipboardRecentContentIOSWithFakeUptime> clipboard_content_;
 };
 
 TEST_F(ClipboardRecentContentIOSTest, SchemeFiltering) {