Strip carriage return from find text; show newline symbols.

ui/gfx/render_text.cc

Index: ui/gfx/render_text.cc
diff --git a/ui/gfx/render_text.cc b/ui/gfx/render_text.cc
index 4e7281c11695d4b7b70beb85b36e04227f425936..ddd854ba3478091fe53bdcb0de3d3a8f85cf3127 100644
--- a/ui/gfx/render_text.cc
+++ b/ui/gfx/render_text.cc
@@ -11,6 +11,7 @@
 #include "base/i18n/break_iterator.h"
 #include "base/logging.h"
 #include "base/stl_util.h"
+#include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "third_party/icu/source/common/unicode/rbbi.h"
 #include "third_party/icu/source/common/unicode/utf16.h"
@@ -1171,6 +1172,12 @@ void RenderText::UpdateLayoutText() {
     layout_text_.assign(ElideText(layout_text_));
   }
 
+  // Replace the newline character with a newline symbol in single line mode.
+  static const base::char16 kNewline[] = { '\n', 0 };
+  static const base::char16 kNewlineSymbol[] = { 0x2424, 0 };
+  if (!multiline_)
+    base::ReplaceChars(layout_text_, kNewline, kNewlineSymbol, &layout_text_);
+
   ResetLayout();
 }