Enable gpu rasterization in the vr shell

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

Index: chrome/browser/android/vr_shell/textures/insecure_content_transient_texture.cc
diff --git a/chrome/browser/android/vr_shell/textures/insecure_content_transient_texture.cc b/chrome/browser/android/vr_shell/textures/insecure_content_transient_texture.cc
index bc2e99b6d93bb17f01b8adfaa5373ed6d9101bab..21b1a107a3733988c914e03ebd303c088d6bedfe 100644
--- a/chrome/browser/android/vr_shell/textures/insecure_content_transient_texture.cc
+++ b/chrome/browser/android/vr_shell/textures/insecure_content_transient_texture.cc
@@ -4,6 +4,7 @@
 
 #include "chrome/browser/android/vr_shell/textures/insecure_content_transient_texture.h"
 
+#include "base/trace_event/trace_event.h"
 #include "cc/paint/skia_paint_canvas.h"
 #include "components/strings/grit/components_strings.h"
 #include "ui/base/l10n/l10n_util.h"
@@ -33,15 +34,22 @@ InsecureContentTransientTexture::~InsecureContentTransientTexture() = default;
 
 void InsecureContentTransientTexture::Draw(gfx::Canvas* canvas,
                                            const gfx::Size& texture_size) {
+  TRACE_EVENT0("gpu,vr", "InsecureContentTransientTexture::Draw");
   size_.set_width(texture_size.width());
   int max_height = texture_size.height();
   cc::PaintFlags flags;
   flags.setColor(kBackgroundColor);
 
+  TRACE_EVENT_BEGIN0("gpu,vr", "GetStringUTF16");
   int text_flags = gfx::Canvas::TEXT_ALIGN_CENTER | gfx::Canvas::MULTI_LINE;
   auto text =
       l10n_util::GetStringUTF16(IDS_PAGE_INFO_INSECURE_WEBVR_CONTENT_TRANSIENT);
+  TRACE_EVENT_END0("gpu,vr", "GetStringUTF16");
+
+  TRACE_EVENT_BEGIN0("gpu,vr", "GetFontList");
   auto fonts = GetFontList(size_.width() * kFontSizeFactor, text);
+  TRACE_EVENT_END0("gpu,vr", "GetFontList");
+
   int text_width = size_.width() * kTextWidthFactor;
   int text_height = 0;  // Will be increased during text measurement.
   gfx::Canvas::SizeStringInt(text, fonts, &text_width, &text_height, 0,
@@ -58,9 +66,12 @@ void InsecureContentTransientTexture::Draw(gfx::Canvas* canvas,
   canvas->Save();
   canvas->Translate(gfx::Vector2d(size_.width() * kBorderFactor,
                                   size_.width() * kBorderFactor));
+
+  TRACE_EVENT_BEGIN0("gpu,vr", "DrawStringRectWithFlags");
   canvas->DrawStringRectWithFlags(
       text, fonts, kForegroundColor,
       gfx::Rect(kTextWidthFactor * size_.width(), text_height), text_flags);
+  TRACE_EVENT_END0("gpu,vr", "DrawStringRectWithFlags");
   canvas->Restore();
 }