Revert of Avoid Copying damage rect when using Overlays

cc/output/overlay_candidate.cc

 // 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_candidate.h"
 
 #include <algorithm>
 #include <limits>
 #include "base/logging.h"
 #include "cc/base/math_util.h"
@@ skipping 178 matching lines @@
 
   auto& transform = quad->shared_quad_state->quad_to_target_transform;
   candidate->display_rect = gfx::RectF(quad->rect);
   transform.TransformRect(&candidate->display_rect);
   candidate->quad_rect_in_target_space =
       MathUtil::MapEnclosingClippedRect(transform, quad->rect);
 
   candidate->format = RGBA_8888;
   candidate->clip_rect = quad->shared_quad_state->clip_rect;
   candidate->is_clipped = quad->shared_quad_state->is_clipped;
-  candidate->needs_blending =
-      quad->shared_quad_state->opacity < 1.0f || quad->needs_blending;
 
   switch (quad->material) {
     case DrawQuad::TEXTURE_CONTENT:
       return FromTextureQuad(resource_provider,
                              TextureDrawQuad::MaterialCast(quad), candidate);
     case DrawQuad::STREAM_VIDEO_CONTENT:
       return FromStreamVideoQuad(resource_provider,
                                  StreamVideoDrawQuad::MaterialCast(quad),
                                  candidate);
     case DrawQuad::IO_SURFACE_CONTENT:
@@ skipping 94 matching lines @@
   if (overlay_transform != gfx::OVERLAY_TRANSFORM_NONE)
     return false;
   candidate->resource_id = quad->io_surface_resource_id();
   candidate->resource_size_in_pixels = quad->io_surface_size;
   candidate->transform = overlay_transform;
   candidate->uv_rect = gfx::RectF(1.f, 1.f);
   return true;
 }
 
 }  // namespace cc