Hook up insecure content warnings for http webVR presentation.

chrome/browser/android/vr_shell/ui_elements/textured_element.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/ui_elements/textured_element.h"
+
+#include "cc/paint/skia_paint_canvas.h"
+#include "chrome/browser/android/vr_shell/textures/ui_texture.h"
+#include "chrome/browser/android/vr_shell/vr_shell_renderer.h"
+#include "third_party/skia/include/core/SkSurface.h"
+
+namespace vr_shell {
+
+TexturedElement::TexturedElement(int maximum_width)
+    : texture_handle_(-1), maximum_width_(maximum_width) {}
+
+TexturedElement::~TexturedElement() = default;
+
+void TexturedElement::Initialize() {
+  glGenTextures(1, &texture_handle_);
+  DCHECK(GetTexture() != nullptr);
+  texture_size_ = GetTexture()->GetPreferredTextureSize(maximum_width_);
+  sk_sp<SkSurface> surface = SkSurface::MakeRasterN32Premul(
+      texture_size_.width(), texture_size_.height());
+  GetTexture()->DrawAndLayout(surface->getCanvas(), texture_size_);
+  Flush(surface.get());
+  fill = Fill::SELF;
+  gfx::SizeF drawn_size = GetTexture()->GetDrawnSize();
+  float y = drawn_size.height() / drawn_size.width() * size.x();
+  size = {size.x(), y, 1};
+}
+
+void TexturedElement::Render(VrShellRenderer* renderer,
+                             vr::Mat4f view_proj_matrix) const {
+  gfx::SizeF drawn_size = GetTexture()->GetDrawnSize();
+  gfx::RectF copy_rect(0, 0, drawn_size.width() / texture_size_.width(),
+                       drawn_size.height() / texture_size_.height());
+  renderer->GetTexturedQuadRenderer()->AddQuad(
+      texture_handle_, view_proj_matrix, copy_rect, opacity);
+}
+
+void TexturedElement::Flush(SkSurface* surface) {
+  cc::SkiaPaintCanvas paint_canvas(surface->getCanvas());
+  paint_canvas.flush();
+  SkPixmap pixmap;
+  CHECK(surface->peekPixels(&pixmap));
+
+  glBindTexture(GL_TEXTURE_2D, texture_handle_);
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+  glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, pixmap.width(), pixmap.height(), 0,
+               GL_RGBA, GL_UNSIGNED_BYTE, pixmap.addr());
+}
+
+}  // namespace vr_shell