Upstream Chrome on iOS source code [3/11].

ios/chrome/browser/ui/activity_services/print_activity.mm

+// 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.
+
+#import "ios/chrome/browser/ui/activity_services/print_activity.h"
+
+#include "base/logging.h"
+#import "ios/chrome/browser/ui/commands/UIKit+ChromeExecuteCommand.h"
+#import "ios/chrome/browser/ui/commands/generic_chrome_command.h"
+#include "ios/chrome/browser/ui/commands/ios_command_ids.h"
+#include "ios/chrome/grit/ios_strings.h"
+#include "ui/base/l10n/l10n_util_mac.h"
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+namespace {
+
+NSString* const kPrintActivityType = @"com.google.chrome.printActivity";
+
+}  // namespace
+
+@interface PrintActivity () {
+  UIResponder* responder_;
+}
+@end
+
+@implementation PrintActivity
+@dynamic responder;
+
++ (NSString*)activityIdentifier {
+  return kPrintActivityType;
+}
+
+#pragma mark - UIActivity
+
+- (void)setResponder:(UIResponder*)responder {
+  responder_ = responder;
+}
+
+- (NSString*)activityType {
+  return [PrintActivity activityIdentifier];
+}
+
+- (NSString*)activityTitle {
+  return l10n_util::GetNSString(IDS_IOS_SHARE_MENU_PRINT_ACTION);
+}
+
+- (UIImage*)activityImage {
+  return [UIImage imageNamed:@"activity_services_print"];
+}
+
+- (BOOL)canPerformWithActivityItems:(NSArray*)activityItems {
+  return YES;
+}
+
+- (void)prepareWithActivityItems:(NSArray*)activityItems {
+}
+
++ (UIActivityCategory)activityCategory {
+  return UIActivityCategoryAction;
+}
+
+- (void)performActivity {
+  GenericChromeCommand* command =
+      [[GenericChromeCommand alloc] initWithTag:IDC_PRINT];
+  DCHECK(responder_);
+  [responder_ chromeExecuteCommand:command];
+  [self activityDidFinish:YES];
+}
+
+@end