[vr] Bail on unhandled code points.

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

Index: chrome/browser/android/vr_shell/textures/url_bar_texture.cc
diff --git a/chrome/browser/android/vr_shell/textures/url_bar_texture.cc b/chrome/browser/android/vr_shell/textures/url_bar_texture.cc
index 3c43bf06aca9c987d7b1bc24a3dbee721ffdea18..cca0696d44f6ae2c06a104c69bc7db8dc9d55cc1 100644
--- a/chrome/browser/android/vr_shell/textures/url_bar_texture.cc
+++ b/chrome/browser/android/vr_shell/textures/url_bar_texture.cc
@@ -84,7 +84,9 @@ gfx::PointF percentToMeters(const gfx::PointF& percent) {
 
 }  // namespace
 
-UrlBarTexture::UrlBarTexture() : security_level_(SecurityLevel::DANGEROUS) {}
+UrlBarTexture::UrlBarTexture(const base::Callback<void()>& failure_callback)
+    : security_level_(SecurityLevel::DANGEROUS),
+      failure_callback_(failure_callback) {}
 
 UrlBarTexture::~UrlBarTexture() = default;
 
@@ -210,10 +212,12 @@ void UrlBarTexture::Draw(SkCanvas* canvas, const gfx::Size& texture_size) {
       float url_width = kWidth - url_x - kUrlRightMargin;
       gfx::Rect text_bounds(ToPixels(url_x), 0, ToPixels(url_width),
                             ToPixels(kHeight));
+      base::string16 text = base::UTF8ToUTF16(gurl_.spec());
+      if (!CheckFontList(pixel_font_height, text))
+        failure_callback_.Run();
       gurl_render_texts_ = PrepareDrawStringRect(
-          base::UTF8ToUTF16(gurl_.spec()),
-          GetDefaultFontList(pixel_font_height), SK_ColorBLACK, &text_bounds,
-          kTextAlignmentLeft, kWrappingBehaviorNoWrap);
+          text, GetDefaultFontList(pixel_font_height), SK_ColorBLACK,
+          &text_bounds, kTextAlignmentLeft, kWrappingBehaviorNoWrap);
       last_drawn_gurl_ = gurl_;
     }
     for (auto& render_text : gurl_render_texts_)