Remove parts of //cc we aren't using

cc/resources/display_list_recording_source.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/resources/display_list_recording_source.h"
-
-#include <algorithm>
-
-#include "cc/base/region.h"
-#include "cc/layers/content_layer_client.h"
-#include "cc/resources/display_item_list.h"
-#include "cc/resources/display_list_raster_source.h"
-#include "skia/ext/analysis_canvas.h"
-
-namespace {
-
-// Layout pixel buffer around the visible layer rect to record.  Any base
-// picture that intersects the visible layer rect expanded by this distance
-// will be recorded.
-const int kPixelDistanceToRecord = 8000;
-// We don't perform solid color analysis on images that have more than 10 skia
-// operations.
-const int kOpCountThatIsOkToAnalyze = 10;
-
-}  // namespace
-
-namespace cc {
-
-DisplayListRecordingSource::DisplayListRecordingSource()
-    : slow_down_raster_scale_factor_for_debug_(0),
-      gather_pixel_refs_(false),
-      requires_clear_(false),
-      is_solid_color_(false),
-      solid_color_(SK_ColorTRANSPARENT),
-      background_color_(SK_ColorTRANSPARENT),
-      pixel_record_distance_(kPixelDistanceToRecord),
-      is_suitable_for_gpu_rasterization_(true) {
-}
-
-DisplayListRecordingSource::~DisplayListRecordingSource() {
-}
-
-bool DisplayListRecordingSource::UpdateAndExpandInvalidation(
-    ContentLayerClient* painter,
-    Region* invalidation,
-    const gfx::Size& layer_size,
-    const gfx::Rect& visible_layer_rect,
-    int frame_number,
-    RecordingMode recording_mode) {
-  bool updated = false;
-
-  if (size_ != layer_size) {
-    size_ = layer_size;
-    updated = true;
-  }
-
-  gfx::Rect old_recorded_viewport = recorded_viewport_;
-  recorded_viewport_ = visible_layer_rect;
-  recorded_viewport_.Inset(-pixel_record_distance_, -pixel_record_distance_);
-  recorded_viewport_.Intersect(gfx::Rect(GetSize()));
-
-  if (recorded_viewport_ != old_recorded_viewport) {
-    // Invalidate newly-exposed and no-longer-exposed areas.
-    Region newly_exposed_region(recorded_viewport_);
-    newly_exposed_region.Subtract(old_recorded_viewport);
-    invalidation->Union(newly_exposed_region);
-
-    Region no_longer_exposed_region(old_recorded_viewport);
-    no_longer_exposed_region.Subtract(recorded_viewport_);
-    invalidation->Union(no_longer_exposed_region);
-
-    updated = true;
-  }
-
-  if (!updated && !invalidation->Intersects(recorded_viewport_))
-    return false;
-
-  ContentLayerClient::PaintingControlSetting painting_control =
-      ContentLayerClient::PAINTING_BEHAVIOR_NORMAL;
-
-  switch (recording_mode) {
-    case RECORD_NORMALLY:
-      // Already setup for normal recording.
-      break;
-    case RECORD_WITH_SK_NULL_CANVAS:
-    // TODO(schenney): Remove this when DisplayList recording is the only
-    // option. For now, fall through and disable construction.
-    case RECORD_WITH_PAINTING_DISABLED:
-      painting_control = ContentLayerClient::DISPLAY_LIST_CONSTRUCTION_DISABLED;
-      break;
-    case RECORD_WITH_CACHING_DISABLED:
-      painting_control = ContentLayerClient::DISPLAY_LIST_CACHING_DISABLED;
-      break;
-    default:
-      NOTREACHED();
-  }
-
-  int repeat_count = 1;
-  if (slow_down_raster_scale_factor_for_debug_ > 1) {
-    repeat_count = slow_down_raster_scale_factor_for_debug_;
-    if (painting_control !=
-        ContentLayerClient::DISPLAY_LIST_CONSTRUCTION_DISABLED) {
-      painting_control = ContentLayerClient::DISPLAY_LIST_CACHING_DISABLED;
-    }
-  }
-  for (int i = 0; i < repeat_count; ++i) {
-    display_list_ = painter->PaintContentsToDisplayList(recorded_viewport_,
-                                                        painting_control);
-  }
-  display_list_->set_layer_rect(recorded_viewport_);
-  is_suitable_for_gpu_rasterization_ =
-      display_list_->IsSuitableForGpuRasterization();
-
-  DetermineIfSolidColor();
-  display_list_->EmitTraceSnapshot();
-
-  display_list_->CreateAndCacheSkPicture();
-
-  return true;
-}
-
-void DisplayListRecordingSource::DidMoveToNewCompositor() {
-  // No invalidation history to worry about here.
-}
-
-gfx::Size DisplayListRecordingSource::GetSize() const {
-  return size_;
-}
-
-void DisplayListRecordingSource::SetEmptyBounds() {
-  size_ = gfx::Size();
-  Clear();
-}
-
-void DisplayListRecordingSource::SetSlowdownRasterScaleFactor(int factor) {
-  slow_down_raster_scale_factor_for_debug_ = factor;
-}
-
-void DisplayListRecordingSource::SetGatherPixelRefs(bool gather_pixel_refs) {
-  gather_pixel_refs_ = gather_pixel_refs;
-}
-
-void DisplayListRecordingSource::SetBackgroundColor(SkColor background_color) {
-  background_color_ = background_color;
-}
-
-void DisplayListRecordingSource::SetRequiresClear(bool requires_clear) {
-  requires_clear_ = requires_clear;
-}
-
-void DisplayListRecordingSource::SetUnsuitableForGpuRasterizationForTesting() {
-  is_suitable_for_gpu_rasterization_ = false;
-}
-
-bool DisplayListRecordingSource::IsSuitableForGpuRasterization() const {
-  return is_suitable_for_gpu_rasterization_;
-}
-
-scoped_refptr<RasterSource> DisplayListRecordingSource::CreateRasterSource(
-    bool can_use_lcd_text) const {
-  return scoped_refptr<RasterSource>(
-      DisplayListRasterSource::CreateFromDisplayListRecordingSource(
-          this, can_use_lcd_text));
-}
-
-gfx::Size DisplayListRecordingSource::GetTileGridSizeForTesting() const {
-  return gfx::Size();
-}
-
-void DisplayListRecordingSource::DetermineIfSolidColor() {
-  DCHECK(display_list_.get());
-  is_solid_color_ = false;
-  solid_color_ = SK_ColorTRANSPARENT;
-
-  if (display_list_->ApproximateOpCount() > kOpCountThatIsOkToAnalyze)
-    return;
-
-  gfx::Size layer_size = GetSize();
-  skia::AnalysisCanvas canvas(layer_size.width(), layer_size.height());
-  display_list_->Raster(&canvas, nullptr, 1.f);
-  is_solid_color_ = canvas.GetColorIfSolid(&solid_color_);
-}
-
-void DisplayListRecordingSource::Clear() {
-  recorded_viewport_ = gfx::Rect();
-  display_list_ = NULL;
-  is_solid_color_ = false;
-}
-
-}  // namespace cc