Fix ManualTextFramerTest.OriginRTLTest on iOS 11

ios/chrome/browser/ui/util/manual_text_framer_unittest.mm

Index: ios/chrome/browser/ui/util/manual_text_framer_unittest.mm
diff --git a/ios/chrome/browser/ui/util/manual_text_framer_unittest.mm b/ios/chrome/browser/ui/util/manual_text_framer_unittest.mm
index 2b4e0e27d06e969da7f4b5d8aa92d76935974789..4da9712cc020db24e5c536f382acf941f6628e5f 100644
--- a/ios/chrome/browser/ui/util/manual_text_framer_unittest.mm
+++ b/ios/chrome/browser/ui/util/manual_text_framer_unittest.mm
@@ -198,7 +198,9 @@ TEST_F(ManualTextFramerTest, OriginRTLTest) {
   attributes()[NSParagraphStyleAttributeName] = CreateParagraphStyle(
       20.0, NSTextAlignmentNatural, NSLineBreakByWordWrapping);
   ApplyAttributesForRange(text_range());
-  CGRect bounds = CGRectMake(0, 0, 100.0, 60.0);
+  // The bounds width is chosen so that the RTL string above can be completely
+  // laid out into three lines.
+  CGRect bounds = CGRectMake(0, 0, 115.0, 60.0);
   FrameTextInBounds(bounds);
   CheckForLineCountAndFramedRange(3, text_range());
   for (FramedLine* line in text_frame().lines) {