Add unittest to Open from Clipboard component.

components/open_from_clipboard/clipboard_recent_content_ios.mm

 // Copyright 2015 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 "components/open_from_clipboard/clipboard_recent_content_ios.h"
 
 #import <UIKit/UIKit.h>
 
 #include "base/logging.h"
 #include "base/macros.h"
@@ skipping 82 matching lines @@
     return false;
   }
   if (urlFromPasteboardCache_.is_valid()) {
     *url = urlFromPasteboardCache_;
     return true;
   }
   return false;
 }
 
 void ClipboardRecentContentIOS::PasteboardChanged() {
-  if ([UIPasteboard generalPasteboard].changeCount !=
-      lastPasteboardChangeCount_) {
-    urlFromPasteboardCache_ = URLFromPasteboard();
-    if (!urlFromPasteboardCache_.is_empty()) {
-      base::RecordAction(
-          base::UserMetricsAction("MobileOmniboxClipboardChanged"));
-    }
-    lastPasteboardChangeDate_.reset([[NSDate date] retain]);
-    lastPasteboardChangeCount_ = [UIPasteboard generalPasteboard].changeCount;
-    SaveToUserDefaults();
+  urlFromPasteboardCache_ = URLFromPasteboard();
+  if (!urlFromPasteboardCache_.is_empty()) {
+    base::RecordAction(
+        base::UserMetricsAction("MobileOmniboxClipboardChanged"));
   }
+  lastPasteboardChangeDate_.reset([[NSDate date] retain]);
+  lastPasteboardChangeCount_ = [UIPasteboard generalPasteboard].changeCount;
+  SaveToUserDefaults();
 }
 
 ClipboardRecentContentIOS::ClipboardRecentContentIOS()
     : ClipboardRecentContent() {
   urlFromPasteboardCache_ = URLFromPasteboard();
   LoadFromUserDefaults();
   // The pasteboard's changeCount is reset to zero when the device is restarted.
   // This means that even if |changeCount| hasn't changed, the pasteboard
   // content could have changed. In order to avoid missing pasteboard changes,
   // the changeCount is reset if the device has restarted.
   NSInteger changeCount = [UIPasteboard generalPasteboard].changeCount;
   if (changeCount != lastPasteboardChangeCount_ ||
       DeviceRestartedSincePasteboardChanged()) {
-     PasteboardChanged();
+    PasteboardChanged();
   }
   notificationBridge_.reset(
       [[PasteboardNotificationListenerBridge alloc] initWithDelegate:this]);
 }
 
 ClipboardRecentContentIOS::~ClipboardRecentContentIOS() {
 }
 
 GURL ClipboardRecentContentIOS::URLFromPasteboard() {
   const std::string clipboard =
@@ skipping 28 matching lines @@
   [[NSUserDefaults standardUserDefaults] setObject:lastPasteboardChangeDate_
                                             forKey:kPasteboardChangeDateKey];
 }
 
 bool ClipboardRecentContentIOS::DeviceRestartedSincePasteboardChanged() {
   int64 secondsSincePasteboardChange =
       -static_cast<int64>([lastPasteboardChangeDate_ timeIntervalSinceNow]);
   int64 secondsSinceLastDeviceRestart = base::SysInfo::Uptime() / 1000;
   return secondsSincePasteboardChange > secondsSinceLastDeviceRestart;
 }