Remove all traces of compositing reasons from cc

cc/layers/layer.cc

 // Copyright 2010 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/layers/layer.h"
 
 #include <algorithm>
 
 #include "base/debug/trace_event.h"
 #include "base/location.h"
@@ skipping 39 matching lines @@
       hide_layer_and_subtree_(false),
       masks_to_bounds_(false),
       contents_opaque_(false),
       double_sided_(true),
       preserves_3d_(false),
       use_parent_backface_visibility_(false),
       draw_checkerboard_for_missing_tiles_(false),
       force_render_surface_(false),
       anchor_point_(0.5f, 0.5f),
       background_color_(0),
-      compositing_reasons_(kCompositingReasonUnknown),
       opacity_(1.f),
       blend_mode_(SkXfermode::kSrcOver_Mode),
       anchor_point_z_(0.f),
       scroll_parent_(NULL),
       clip_parent_(NULL),
       replica_layer_(NULL),
       raster_scale_(0.f),
       client_(NULL) {
   if (layer_id_ < 0) {
     s_next_layer_id = 1;
@@ skipping 805 matching lines @@
   bool is_tracing;
   TRACE_EVENT_CATEGORY_GROUP_ENABLED(TRACE_DISABLED_BY_DEFAULT("cc.debug"),
                                      &is_tracing);
   if (is_tracing) {
     layer->SetDebugName(DebugName());
     layer->SetDebugInfo(TakeDebugInfo());
   } else {
     layer->SetDebugName(std::string());
   }
 
-  layer->SetCompositingReasons(compositing_reasons_);
   layer->SetDoubleSided(double_sided_);
   layer->SetDrawCheckerboardForMissingTiles(
       draw_checkerboard_for_missing_tiles_);
   layer->SetForceRenderSurface(force_render_surface_);
   layer->SetDrawsContent(DrawsContent());
   layer->SetHideLayerAndSubtree(hide_layer_and_subtree_);
   if (!layer->FilterIsAnimatingOnImplOnly() && !FilterIsAnimating())
     layer->SetFilters(filters_);
   DCHECK(!(FilterIsAnimating() && layer->FilterIsAnimatingOnImplOnly()));
   layer->SetBackgroundFilters(background_filters());
@@ skipping 142 matching lines @@
   return client_ ? client_->DebugName() : std::string();
 }
 
 scoped_refptr<base::debug::ConvertableToTraceFormat> Layer::TakeDebugInfo() {
   if (client_)
     return client_->TakeDebugInfo();
   else
     return NULL;
 }
 
-
-void Layer::SetCompositingReasons(CompositingReasons reasons) {
-  compositing_reasons_ = reasons;
-}
-
 void Layer::CreateRenderSurface() {
   DCHECK(!draw_properties_.render_surface);
   draw_properties_.render_surface = make_scoped_ptr(new RenderSurface(this));
   draw_properties_.render_target = this;
 }
 
 void Layer::ClearRenderSurface() {
   draw_properties_.render_surface.reset();
 }
 
@@ skipping 117 matching lines @@
     clip_parent_->RemoveClipChild(this);
 
   clip_parent_ = NULL;
 }
 
 void Layer::RunMicroBenchmark(MicroBenchmark* benchmark) {
   benchmark->RunOnLayer(this);
 }
 
 }  // namespace cc