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

chrome/browser/android/vr_shell/textures/url_bar_texture.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/i18n/rtl.h"
 #include "base/strings/utf_string_conversions.h"
 #include "cc/paint/skia_paint_canvas.h"
 #include "chrome/browser/android/vr_shell/color_scheme.h"
 #include "chrome/browser/android/vr_shell/textures/render_text_wrapper.h"
 #include "components/toolbar/vector_icons.h"
 #include "components/url_formatter/url_formatter.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/font.h"
 #include "ui/gfx/font_list.h"
 #include "ui/gfx/geometry/point_f.h"
@@ skipping 235 matching lines @@
   }
 }
 
 void UrlBarTexture::RenderUrl(const gfx::Size& texture_size,
                               const gfx::Rect& bounds) {
   url::Parsed parsed;
   const base::string16 text = url_formatter::FormatUrl(
       gurl_, url_formatter::kFormatUrlOmitAll, net::UnescapeRule::NORMAL,
       &parsed, nullptr, nullptr);
 
+  if (base::i18n::StringContainsStrongRTLChars(text))
+    failure_callback_.Run(UiUnsupportedMode::kURLWithStrongRTLChars);
+
   int pixel_font_height = texture_size.height() * kFontHeight / kHeight;
 
   gfx::FontList font_list;
   if (!GetFontList(pixel_font_height, text, &font_list))
     failure_callback_.Run(UiUnsupportedMode::kUnhandledCodePoint);
 
   std::unique_ptr<gfx::RenderText> render_text(
       gfx::RenderText::CreateInstance());
   render_text->SetFontList(font_list);
   render_text->SetColor(SK_ColorBLACK);
@@ skipping 91 matching lines @@
 
 gfx::Size UrlBarTexture::GetPreferredTextureSize(int maximum_width) const {
   return gfx::Size(maximum_width, maximum_width * kHeight / kWidth);
 }
 
 gfx::SizeF UrlBarTexture::GetDrawnSize() const {
   return size_;
 }
 
 }  // namespace vr_shell