Use a plain UILabel for answers in suggest detail text.

ios/chrome/browser/ui/omnibox/omnibox_popup_material_row.mm

Index: ios/chrome/browser/ui/omnibox/omnibox_popup_material_row.mm
diff --git a/ios/chrome/browser/ui/omnibox/omnibox_popup_material_row.mm b/ios/chrome/browser/ui/omnibox/omnibox_popup_material_row.mm
index 3196ae46d7e506a5e86867ed79bd9de53bb63bde..42d4a3af7d0aadd510d6c52e9034e158c490981f 100644
--- a/ios/chrome/browser/ui/omnibox/omnibox_popup_material_row.mm
+++ b/ios/chrome/browser/ui/omnibox/omnibox_popup_material_row.mm
@@ -34,6 +34,7 @@ const CGFloat kAppendButtonSize = 48.0;
 
 @synthesize textTruncatingLabel = _textTruncatingLabel;
 @synthesize detailTruncatingLabel = _detailTruncatingLabel;
+@synthesize detailAnswerLabel = _detailAnswerLabel;
 @synthesize appendButton = _appendButton;
 @synthesize answerImageView = _answerImageView;
 @synthesize imageView = _imageView;
@@ -66,6 +67,14 @@ const CGFloat kAppendButtonSize = 48.0;
     _detailTruncatingLabel.userInteractionEnabled = NO;
     [self addSubview:_detailTruncatingLabel];
 
+    // Answers use a UILabel with NSLineBreakByTruncatingTail to produce a
+    // truncation with an ellipse instead of fading on multi-line text.
+    _detailAnswerLabel = [[UILabel alloc] initWithFrame:CGRectZero];

[rohitrao (ping after 24h), 2017/03/02 18:18:31]

How does the frame for this label (and all the other labels) get set?

[Justin Donnelly, 2017/03/02 18:52:05]

The layout of these labels is done in OmniboxPopupMaterialViewController. See
http://crbug.com/697647 for my proposal to change this.

+    _detailAnswerLabel.autoresizingMask = UIViewAutoresizingFlexibleWidth;
+    _detailAnswerLabel.userInteractionEnabled = NO;
+    _detailAnswerLabel.lineBreakMode = NSLineBreakByTruncatingTail;
+    [self addSubview:_detailAnswerLabel];
+
     _appendButton = [[UIButton buttonWithType:UIButtonTypeCustom] retain];
     [_appendButton setContentMode:UIViewContentModeRight];
     [self updateAppendButtonImages];
@@ -164,7 +173,9 @@ const CGFloat kAppendButtonSize = 48.0;
 }
 
 - (NSString*)accessibilityValue {
-  return _detailTruncatingLabel.attributedText.string;
+  return _detailTruncatingLabel.hidden
+             ? _detailAnswerLabel.attributedText.string
+             : _detailTruncatingLabel.attributedText.string;
 }
 
 @end