Upstream Chrome on iOS source code [4/11].

ios/chrome/browser/ui/collection_view/cells/test_utils.mm

Index: ios/chrome/browser/ui/collection_view/cells/test_utils.mm
diff --git a/ios/chrome/browser/ui/collection_view/cells/test_utils.mm b/ios/chrome/browser/ui/collection_view/cells/test_utils.mm
new file mode 100644
index 0000000000000000000000000000000000000000..a5c7e323e7f2bc5f913f0cca966c1a7b393f398c
--- /dev/null
+++ b/ios/chrome/browser/ui/collection_view/cells/test_utils.mm
@@ -0,0 +1,23 @@
+// Copyright 2016 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/collection_view/cells/test_utils.h"
+
+namespace ios_internal {
+
+UIImage* CollectionViewTestImage() {
+  CGRect rect = CGRectMake(0.0, 0.0, 1.0, 1.0);
+  UIGraphicsBeginImageContext(rect.size);
+  CGContextRef context = UIGraphicsGetCurrentContext();
+
+  CGContextSetFillColorWithColor(context, [UIColor blueColor].CGColor);
+  CGContextFillRect(context, rect);
+
+  UIImage* image = UIGraphicsGetImageFromCurrentImageContext();
+  UIGraphicsEndImageContext();
+
+  return image;
+}
+
+}  // namespace ios_internal