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..444b6aba110d995a0dcc9595d6ff3669d7b8425a 100644
--- a/ios/chrome/browser/ui/util/manual_text_framer_unittest.mm
+++ b/ios/chrome/browser/ui/util/manual_text_framer_unittest.mm
@@ -4,6 +4,7 @@
 
 #include "ios/chrome/browser/ui/util/manual_text_framer.h"
 
+#include "base/ios/ios_util.h"
 #include "base/mac/foundation_util.h"
 #include "base/time/time.h"
 #import "ios/chrome/browser/ui/util/core_text_util.h"
@@ -198,7 +199,9 @@ TEST_F(ManualTextFramerTest, OriginRTLTest) {
   attributes()[NSParagraphStyleAttributeName] = CreateParagraphStyle(
       20.0, NSTextAlignmentNatural, NSLineBreakByWordWrapping);
   ApplyAttributesForRange(text_range());
-  CGRect bounds = CGRectMake(0, 0, 100.0, 60.0);
+  CGRect bounds = base::ios::IsRunningOnIOS11OrLater()

[kkhorimoto, 2017/06/12 19:42:03]

Can we separate the width calculation out and add some commenting?  Something
like:

// The bounds width is chosen so that the RTL string above
// is laid out into 3 lines.  The font that iOS 11 uses for Arabic
// strings takes more horizontal space, so the bounds width
// is increased accordingly.
CGFloat width = base::ios::IsRunningOnIOS11OrLater() ? 130.0 : 100.0;

[lpromero, 2017/06/13 08:10:25]

Done.

+                      ? CGRectMake(0, 0, 130.0, 60.0)
+                      : CGRectMake(0, 0, 100.0, 60.0);
   FrameTextInBounds(bounds);
   CheckForLineCountAndFramedRange(3, text_range());
   for (FramedLine* line in text_frame().lines) {