[vr] Exit to 2D when encountering URLs with strong RTL characters

chrome/browser/android/vr_shell/textures/url_bar_texture_unittest.cc

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/android/vr_shell/textures/url_bar_texture.h"
 
 #include "base/bind.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 161 matching lines @@
   texture.DrawURL(GURL("https://foo.com"));
   EXPECT_EQ(UiUnsupportedMode::kCount, texture.unsupported_mode());
   texture.SetForceFontFallbackFailure(true);
   texture.DrawURL(GURL("https://bar.com"));
   EXPECT_EQ(UiUnsupportedMode::kUnhandledCodePoint, texture.unsupported_mode());
   texture.SetForceFontFallbackFailure(false);
   texture.DrawURL(GURL("https://baz.com"));
   EXPECT_EQ(UiUnsupportedMode::kCount, texture.unsupported_mode());
 }
 
+TEST(UrlBarTextureTest, WillFailOnStrongRTLChar) {
+  TestUrlBarTexture texture;
+  texture.DrawURL(GURL("https://ש.com"));
+  EXPECT_EQ(UiUnsupportedMode::kURLWithStrongRTLChars,
+            texture.unsupported_mode());
+}
+
 TEST(UrlBarTexture, ElisionIsAnUnsupportedMode) {
   TestUrlBarTexture texture;
   texture.DrawURL(GURL(
       "https://"
       "thereisnopossiblewaythatthishostnamecouldbecontainedinthelimitedspacetha"
       "tweareaffordedtousitsreallynotsomethingweshouldconsiderorplanfororpinour"
       "hopesonlestwegetdisappointedor.sad.com"));
   EXPECT_EQ(UiUnsupportedMode::kCouldNotElideURL, texture.unsupported_mode());
 }
 
 TEST(UrlBarTexture, ShortURLAreIndeedSupported) {
   TestUrlBarTexture texture;
   texture.DrawURL(GURL("https://short.com/"));
   EXPECT_EQ(UiUnsupportedMode::kCount, texture.unsupported_mode());
 }
 
 TEST(UrlBarTexture, LongPathsDoNotRequireElisionAndAreSupported) {
   TestUrlBarTexture texture;
   texture.DrawURL(GURL(
       "https://something.com/"
       "thereisnopossiblewaythatthishostnamecouldbecontainedinthelimitedspacetha"
       "tweareaffordedtousitsreallynotsomethingweshouldconsiderorplanfororpinour"
       "hopesonlestwegetdisappointedorsad.com"));
   EXPECT_EQ(UiUnsupportedMode::kCount, texture.unsupported_mode());
 }
 
 }  // namespace vr_shell