Add support to send optimal format as part of ScheduleOverlayPlane

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 152 matching lines @@
     default:
       return gfx::OVERLAY_TRANSFORM_INVALID;
   }
 }
 
 }  // namespace
 
 OverlayCandidate::OverlayCandidate()
     : transform(gfx::OVERLAY_TRANSFORM_NONE),
       format(RGBA_8888),
+      storage_format(gfx::BufferFormat::BGRX_8888),
       uv_rect(0.f, 0.f, 1.f, 1.f),
       is_clipped(false),
       use_output_surface_for_resource(false),
       resource_id(0),
       plane_z_order(0),
       is_unoccluded(false),
+      handle_scaling(true),
       overlay_handled(false) {}
 
 OverlayCandidate::~OverlayCandidate() {}
 
 // static
 bool OverlayCandidate::FromDrawQuad(ResourceProvider* resource_provider,
                                     const DrawQuad* quad,
                                     OverlayCandidate* candidate) {
   if (quad->needs_blending || quad->shared_quad_state->opacity != 1.f ||
       quad->shared_quad_state->blend_mode != SkXfermode::kSrcOver_Mode)
@@ skipping 132 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