Disable BoundedLabelTest.GetWrappedTextTest on macOS 10.10

There are slightly different font metrics between macOS versions, and
either macOS 10.10 or 10.11 will fail with a single hard-coded constant
value for pixel widths. Just disable this test on 10.10, which is the
oldest version that is supported, and let the test pass on 10.11+.

Bug: 739386
Change-Id: I82ea6a3276ebe5de4906c33a906ebf76cf2c85b9
Reviewed-on: https://chromium-review.googlesource.com/c/1344769Reviewed-by: Robert Sesek <rsesek@chromium.org>
Cr-Commit-Position: refs/heads/master@{#609764}

ui/message_center/views/bounded_label_unittest.cc

@@ -8,12 +8,17 @@
 
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
+#include "build/build_config.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gfx/font_list.h"
 #include "ui/gfx/text_utils.h"
 #include "ui/views/controls/label.h"
 #include "ui/views/test/views_test_base.h"
 
+#if defined(OS_MACOSX)
+#include "base/mac/mac_util.h"
+#endif
+
 namespace message_center {
 
 namespace test {
@@ -101,6 +106,13 @@ class BoundedLabelTest : public views::ViewsTestBase {
 /* Elision tests **************************************************************/
 
 TEST_F(BoundedLabelTest, GetWrappedTextTest) {
+#if defined(OS_MACOSX)
+  // Skip this test on macOS 10.10, which has slightly different font metrics
+  // than the other OSes we support.
+  if (base::mac::IsOS10_10())
+    return;
+#endif
+
   // One word per line: No ellision should be made when not necessary.
   TEST_WRAP("123", "123", 301, 1);
   TEST_WRAP("123", "123", 301, 2);