Delete CC.

cc/output/filter_operations.cc

Index: cc/output/filter_operations.cc
diff --git a/cc/output/filter_operations.cc b/cc/output/filter_operations.cc
deleted file mode 100644
index 92423de9b594b340130a1993557846408828145d..0000000000000000000000000000000000000000
--- a/cc/output/filter_operations.cc
+++ /dev/null
@@ -1,209 +0,0 @@
-// Copyright 2013 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/filter_operations.h"
-
-#include <cmath>
-
-#include "base/trace_event/trace_event_argument.h"
-#include "base/values.h"
-#include "cc/output/filter_operation.h"
-
-namespace cc {
-
-FilterOperations::FilterOperations() {}
-
-FilterOperations::FilterOperations(const FilterOperations& other)
-    : operations_(other.operations_) {}
-
-FilterOperations::~FilterOperations() {}
-
-FilterOperations& FilterOperations::operator=(const FilterOperations& other) {
-  operations_ = other.operations_;
-  return *this;
-}
-
-bool FilterOperations::operator==(const FilterOperations& other) const {
-  if (other.size() != size())
-    return false;
-  for (size_t i = 0; i < size(); ++i) {
-    if (other.at(i) != at(i))
-      return false;
-  }
-  return true;
-}
-
-void FilterOperations::Append(const FilterOperation& filter) {
-  operations_.push_back(filter);
-}
-
-void FilterOperations::Clear() {
-  operations_.clear();
-}
-
-bool FilterOperations::IsEmpty() const {
-  return operations_.empty();
-}
-
-static int SpreadForStdDeviation(float std_deviation) {
-  // https://dvcs.w3.org/hg/FXTF/raw-file/tip/filters/index.html#feGaussianBlurElement
-  // provides this approximation for evaluating a gaussian blur by a triple box
-  // filter.
-  float d = floorf(std_deviation * 3.f * sqrt(8.f * atan(1.f)) / 4.f + 0.5f);
-  return static_cast<int>(ceilf(d * 3.f / 2.f));
-}
-
-void FilterOperations::GetOutsets(int* top,
-                                  int* right,
-                                  int* bottom,
-                                  int* left) const {
-  *top = *right = *bottom = *left = 0;
-  for (size_t i = 0; i < operations_.size(); ++i) {
-    const FilterOperation& op = operations_[i];
-    // TODO(ajuma): Add support for reference filters once SkImageFilter
-    // reports its outsets.
-    DCHECK(op.type() != FilterOperation::REFERENCE);
-    if (op.type() == FilterOperation::BLUR ||
-        op.type() == FilterOperation::DROP_SHADOW) {
-      int spread = SpreadForStdDeviation(op.amount());
-      if (op.type() == FilterOperation::BLUR) {
-        *top += spread;
-        *right += spread;
-        *bottom += spread;
-        *left += spread;
-      } else {
-        *top += spread - op.drop_shadow_offset().y();
-        *right += spread + op.drop_shadow_offset().x();
-        *bottom += spread + op.drop_shadow_offset().y();
-        *left += spread - op.drop_shadow_offset().x();
-      }
-    }
-  }
-}
-
-bool FilterOperations::HasFilterThatMovesPixels() const {
-  for (size_t i = 0; i < operations_.size(); ++i) {
-    const FilterOperation& op = operations_[i];
-    // TODO(ajuma): Once SkImageFilter reports its outsets, use those here to
-    // determine whether a reference filter really moves pixels.
-    switch (op.type()) {
-      case FilterOperation::BLUR:
-      case FilterOperation::DROP_SHADOW:
-      case FilterOperation::ZOOM:
-      case FilterOperation::REFERENCE:
-        return true;
-      case FilterOperation::OPACITY:
-      case FilterOperation::COLOR_MATRIX:
-      case FilterOperation::GRAYSCALE:
-      case FilterOperation::SEPIA:
-      case FilterOperation::SATURATE:
-      case FilterOperation::HUE_ROTATE:
-      case FilterOperation::INVERT:
-      case FilterOperation::BRIGHTNESS:
-      case FilterOperation::CONTRAST:
-      case FilterOperation::SATURATING_BRIGHTNESS:
-      case FilterOperation::ALPHA_THRESHOLD:
-        break;
-    }
-  }
-  return false;
-}
-
-bool FilterOperations::HasFilterThatAffectsOpacity() const {
-  for (size_t i = 0; i < operations_.size(); ++i) {
-    const FilterOperation& op = operations_[i];
-    // TODO(ajuma): Make this smarter for reference filters. Once SkImageFilter
-    // can report affectsOpacity(), call that.
-    switch (op.type()) {
-      case FilterOperation::OPACITY:
-      case FilterOperation::BLUR:
-      case FilterOperation::DROP_SHADOW:
-      case FilterOperation::ZOOM:
-      case FilterOperation::REFERENCE:
-      case FilterOperation::ALPHA_THRESHOLD:
-        return true;
-      case FilterOperation::COLOR_MATRIX: {
-        const SkScalar* matrix = op.matrix();
-        if (matrix[15] ||
-            matrix[16] ||
-            matrix[17] ||
-            matrix[18] != 1 ||
-            matrix[19])
-          return true;
-        break;
-      }
-      case FilterOperation::GRAYSCALE:
-      case FilterOperation::SEPIA:
-      case FilterOperation::SATURATE:
-      case FilterOperation::HUE_ROTATE:
-      case FilterOperation::INVERT:
-      case FilterOperation::BRIGHTNESS:
-      case FilterOperation::CONTRAST:
-      case FilterOperation::SATURATING_BRIGHTNESS:
-        break;
-    }
-  }
-  return false;
-}
-
-bool FilterOperations::HasReferenceFilter() const {
-  for (size_t i = 0; i < operations_.size(); ++i) {
-    if (operations_[i].type() == FilterOperation::REFERENCE)
-      return true;
-  }
-  return false;
-}
-
-FilterOperations FilterOperations::Blend(const FilterOperations& from,
-                                         double progress) const {
-  if (HasReferenceFilter() || from.HasReferenceFilter())
-    return *this;
-
-  bool from_is_longer = from.size() > size();
-
-  size_t shorter_size, longer_size;
-  if (size() == from.size()) {
-    shorter_size = longer_size = size();
-  } else if  (from_is_longer) {
-    longer_size = from.size();
-    shorter_size = size();
-  } else {
-    longer_size = size();
-    shorter_size = from.size();
-  }
-
-  for (size_t i = 0; i < shorter_size; i++) {
-    if (from.at(i).type() != at(i).type())
-      return *this;
-  }
-
-  FilterOperations blended_filters;
-  for (size_t i = 0; i < shorter_size; i++) {
-    blended_filters.Append(
-        FilterOperation::Blend(&from.at(i), &at(i), progress));
-  }
-
-  if (from_is_longer) {
-    for (size_t i = shorter_size; i < longer_size; i++) {
-      blended_filters.Append(
-          FilterOperation::Blend(&from.at(i), NULL, progress));
-    }
-  } else {
-    for (size_t i = shorter_size; i < longer_size; i++)
-      blended_filters.Append(FilterOperation::Blend(NULL, &at(i), progress));
-  }
-
-  return blended_filters;
-}
-
-void FilterOperations::AsValueInto(
-    base::trace_event::TracedValue* value) const {
-  for (size_t i = 0; i < operations_.size(); ++i) {
-    value->BeginDictionary();
-    operations_[i].AsValueInto(value);
-    value->EndDictionary();
-  }
-}
-
-}  // namespace cc