Delete CC.

cc/output/overlay_strategy_single_on_top.cc

Index: cc/output/overlay_strategy_single_on_top.cc
diff --git a/cc/output/overlay_strategy_single_on_top.cc b/cc/output/overlay_strategy_single_on_top.cc
deleted file mode 100644
index 71897ed4596cc1f72bc370bba044136649ff0fe3..0000000000000000000000000000000000000000
--- a/cc/output/overlay_strategy_single_on_top.cc
+++ /dev/null
@@ -1,196 +0,0 @@
-// Copyright 2014 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 "cc/output/overlay_strategy_single_on_top.h"
-
-#include <limits>
-
-#include "cc/quads/draw_quad.h"
-#include "cc/quads/solid_color_draw_quad.h"
-#include "cc/quads/stream_video_draw_quad.h"
-#include "cc/quads/texture_draw_quad.h"
-#include "ui/gfx/geometry/point3_f.h"
-#include "ui/gfx/geometry/rect_conversions.h"
-#include "ui/gfx/transform.h"
-
-namespace cc {
-
-OverlayStrategySingleOnTop::OverlayStrategySingleOnTop(
-    OverlayCandidateValidator* capability_checker,
-    ResourceProvider* resource_provider)
-    : capability_checker_(capability_checker),
-      resource_provider_(resource_provider) {}
-
-bool OverlayStrategySingleOnTop::IsOverlayQuad(const DrawQuad* draw_quad) {
-  unsigned int resource_id;
-  switch (draw_quad->material) {
-    case DrawQuad::TEXTURE_CONTENT:
-      resource_id = TextureDrawQuad::MaterialCast(draw_quad)->resource_id;
-      break;
-    case DrawQuad::STREAM_VIDEO_CONTENT:
-      resource_id = StreamVideoDrawQuad::MaterialCast(draw_quad)->resource_id;
-      break;
-    default:
-      return false;
-  }
-  return resource_provider_->AllowOverlay(resource_id);
-}
-
-bool OverlayStrategySingleOnTop::GetTextureQuadInfo(
-    const TextureDrawQuad& quad,
-    OverlayCandidate* quad_info) {
-  gfx::OverlayTransform overlay_transform =
-      OverlayCandidate::GetOverlayTransform(quad.quadTransform(), quad.flipped);
-  if (quad.background_color != SK_ColorTRANSPARENT ||
-      quad.premultiplied_alpha ||
-      overlay_transform == gfx::OVERLAY_TRANSFORM_INVALID)
-    return false;
-  quad_info->resource_id = quad.resource_id;
-  quad_info->transform = overlay_transform;
-  quad_info->uv_rect = BoundingRect(quad.uv_top_left, quad.uv_bottom_right);
-  return true;
-}
-
-bool OverlayStrategySingleOnTop::GetVideoQuadInfo(
-    const StreamVideoDrawQuad& quad,
-    OverlayCandidate* quad_info) {
-  gfx::OverlayTransform overlay_transform =
-      OverlayCandidate::GetOverlayTransform(quad.quadTransform(), false);
-  if (overlay_transform == gfx::OVERLAY_TRANSFORM_INVALID)
-    return false;
-  if (!quad.matrix.IsScaleOrTranslation()) {
-    // We cannot handle anything other than scaling & translation for texture
-    // coordinates yet.
-    return false;
-  }
-  quad_info->resource_id = quad.resource_id;
-  quad_info->transform = overlay_transform;
-
-  gfx::Point3F uv0 = gfx::Point3F(0, 0, 0);
-  gfx::Point3F uv1 = gfx::Point3F(1, 1, 0);
-  quad.matrix.TransformPoint(&uv0);
-  quad.matrix.TransformPoint(&uv1);
-  gfx::Vector3dF delta = uv1 - uv0;
-  if (delta.x() < 0) {
-    quad_info->transform = OverlayCandidate::ModifyTransform(
-        quad_info->transform, gfx::OVERLAY_TRANSFORM_FLIP_HORIZONTAL);
-    float x0 = uv0.x();
-    uv0.set_x(uv1.x());
-    uv1.set_x(x0);
-    delta.set_x(-delta.x());
-  }
-
-  if (delta.y() < 0) {
-    // In this situation, uv0y < uv1y. Since we overlay inverted, a request
-    // to invert the source texture means we can just output the texture
-    // normally and it will be correct.
-    quad_info->uv_rect = gfx::RectF(uv0.x(), uv1.y(), delta.x(), -delta.y());
-  } else {
-    quad_info->transform = OverlayCandidate::ModifyTransform(
-        quad_info->transform, gfx::OVERLAY_TRANSFORM_FLIP_VERTICAL);
-    quad_info->uv_rect = gfx::RectF(uv0.x(), uv0.y(), delta.x(), delta.y());
-  }
-  return true;
-}
-
-bool OverlayStrategySingleOnTop::GetCandidateQuadInfo(
-    const DrawQuad& draw_quad,
-    OverlayCandidate* quad_info) {
-  // All quad checks.
-  if (draw_quad.needs_blending || draw_quad.shared_quad_state->opacity != 1.f ||
-      draw_quad.shared_quad_state->blend_mode != SkXfermode::kSrcOver_Mode)
-    return false;
-
-  if (draw_quad.material == DrawQuad::TEXTURE_CONTENT) {
-    const TextureDrawQuad& quad = *TextureDrawQuad::MaterialCast(&draw_quad);
-    if (!GetTextureQuadInfo(quad, quad_info))
-      return false;
-  } else if (draw_quad.material == DrawQuad::STREAM_VIDEO_CONTENT) {
-    const StreamVideoDrawQuad& quad =
-        *StreamVideoDrawQuad::MaterialCast(&draw_quad);
-    if (!GetVideoQuadInfo(quad, quad_info))
-      return false;
-  }
-
-  quad_info->format = RGBA_8888;
-  quad_info->display_rect = OverlayCandidate::GetOverlayRect(
-      draw_quad.quadTransform(), draw_quad.rect);
-  return true;
-}
-
-bool OverlayStrategySingleOnTop::IsInvisibleQuad(const DrawQuad* draw_quad) {
-  if (draw_quad->material == DrawQuad::SOLID_COLOR) {
-    const SolidColorDrawQuad* solid_quad =
-        SolidColorDrawQuad::MaterialCast(draw_quad);
-    SkColor color = solid_quad->color;
-    float opacity = solid_quad->opacity();
-    float alpha = (SkColorGetA(color) * (1.0f / 255.0f)) * opacity;
-    // Ignore transparent solid color quads.
-    return solid_quad->ShouldDrawWithBlending() &&
-           alpha < std::numeric_limits<float>::epsilon();
-  }
-  return false;
-}
-
-bool OverlayStrategySingleOnTop::Attempt(
-    RenderPassList* render_passes_in_draw_order,
-    OverlayCandidateList* candidate_list) {
-  // Only attempt to handle very simple case for now.
-  if (!capability_checker_)
-    return false;
-
-  RenderPass* root_render_pass = render_passes_in_draw_order->back();
-  DCHECK(root_render_pass);
-
-  OverlayCandidate candidate;
-  QuadList& quad_list = root_render_pass->quad_list;
-  auto candidate_iterator = quad_list.end();
-  for (auto it = quad_list.begin(); it != quad_list.end(); ++it) {
-    const DrawQuad* draw_quad = *it;
-    if (IsOverlayQuad(draw_quad)) {
-      // Check that no prior quads overlap it.
-      bool intersects = false;
-      gfx::RectF rect = draw_quad->rect;
-      draw_quad->quadTransform().TransformRect(&rect);
-      for (auto overlap_iter = quad_list.cbegin(); overlap_iter != it;
-           ++overlap_iter) {
-        gfx::RectF overlap_rect = overlap_iter->rect;
-        overlap_iter->quadTransform().TransformRect(&overlap_rect);
-        if (rect.Intersects(overlap_rect) && !IsInvisibleQuad(*overlap_iter)) {
-          intersects = true;
-          break;
-        }
-      }
-      if (intersects || !GetCandidateQuadInfo(*draw_quad, &candidate))
-        continue;
-      candidate_iterator = it;
-      break;
-    }
-  }
-  if (candidate_iterator == quad_list.end())
-    return false;
-
-  // Add our primary surface.
-  OverlayCandidateList candidates;
-  OverlayCandidate main_image;
-  main_image.display_rect = root_render_pass->output_rect;
-  candidates.push_back(main_image);
-
-  // Add the overlay.
-  candidate.plane_z_order = 1;
-  candidates.push_back(candidate);
-
-  // Check for support.
-  capability_checker_->CheckOverlaySupport(&candidates);
-
-  // If the candidate can be handled by an overlay, create a pass for it.
-  if (candidates[1].overlay_handled) {
-    quad_list.EraseAndInvalidateAllPointers(candidate_iterator);
-    candidate_list->swap(candidates);
-    return true;
-  }
-  return false;
-}
-
-}  // namespace cc