cc: Gather and lock/unlock SkDiscardablePixelRefs instead of skia::LazyPixelRefs.

skia/ext/discardable_pixel_ref_utils_unittest.cc

 // 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 "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "cc/test/geometry_test_utils.h"
-#include "skia/ext/lazy_pixel_ref.h"
-#include "skia/ext/lazy_pixel_ref_utils.h"
+#include "skia/ext/discardable_pixel_ref_utils.h"
 #include "skia/ext/refptr.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "third_party/skia/include/core/SkFlattenableBuffers.h"
+#include "third_party/skia/include/core/SkPixelRef.h"
 #include "third_party/skia/include/core/SkPoint.h"
 #include "third_party/skia/include/core/SkShader.h"
 #include "third_party/skia/src/core/SkOrderedReadBuffer.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/skia_util.h"
 
 namespace skia {
 
 namespace {
 
 void CreateBitmap(gfx::Size size, const char* uri, SkBitmap* bitmap);
 
 class TestPixelRef : public SkPixelRef {
  public:
   TestPixelRef(int width, int height);
   virtual ~TestPixelRef();
 
   virtual SkFlattenable::Factory getFactory() const OVERRIDE;
   virtual void* onLockPixels(SkColorTable** color_table) OVERRIDE;
   virtual void onUnlockPixels() OVERRIDE {}
   virtual SkPixelRef* deepCopy(SkBitmap::Config config, const SkIRect* subset)
       OVERRIDE;
 
  private:
   scoped_ptr<char[]> pixels_;
 };
 
-class TestLazyPixelRef : public skia::LazyPixelRef {
+class TestDiscardableShader : public SkShader {
  public:
-  TestLazyPixelRef(int width, int height);
-  virtual ~TestLazyPixelRef();
+  TestDiscardableShader() {
+    CreateBitmap(gfx::Size(50, 50), "discardable", &bitmap_);
+  }
 
-  virtual SkFlattenable::Factory getFactory() const OVERRIDE;
-  virtual void* onLockPixels(SkColorTable** color_table) OVERRIDE;
-  virtual void onUnlockPixels() OVERRIDE {}
-  virtual bool PrepareToDecode(const PrepareParams& params) OVERRIDE;
-  virtual bool MaybeDecoded() OVERRIDE;
-  virtual SkPixelRef* deepCopy(SkBitmap::Config config, const SkIRect* subset)
-      OVERRIDE;
-  virtual void Decode() OVERRIDE {}
-
- private:
-  scoped_ptr<char[]> pixels_;
-};
-
-class TestLazyShader : public SkShader {
- public:
-  TestLazyShader() { CreateBitmap(gfx::Size(50, 50), "lazy", &bitmap_); }
-
-  TestLazyShader(SkFlattenableReadBuffer& flattenable_buffer) {
+  TestDiscardableShader(SkFlattenableReadBuffer& flattenable_buffer) {
     SkOrderedReadBuffer& buffer =
         static_cast<SkOrderedReadBuffer&>(flattenable_buffer);
     SkReader32* reader = buffer.getReader32();
 
     reader->skip(-4);
     uint32_t toSkip = reader->readU32();
     reader->skip(toSkip);
 
-    CreateBitmap(gfx::Size(50, 50), "lazy", &bitmap_);
+    CreateBitmap(gfx::Size(50, 50), "discardable", &bitmap_);
   }
 
   virtual SkShader::BitmapType asABitmap(SkBitmap* bitmap,
                                          SkMatrix* matrix,
                                          TileMode xy[2]) const OVERRIDE {
     if (bitmap)
       *bitmap = bitmap_;
     return SkShader::kDefault_BitmapType;
   }
 
   // Pure virtual implementaiton.
   virtual void shadeSpan(int x, int y, SkPMColor[], int count) OVERRIDE {}
-  SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(TestLazyShader);
+  SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(TestDiscardableShader);
 
  private:
   SkBitmap bitmap_;
 };
 
 TestPixelRef::TestPixelRef(int width, int height)
     : pixels_(new char[4 * width * height]) {}
 
 TestPixelRef::~TestPixelRef() {}
 
 SkFlattenable::Factory TestPixelRef::getFactory() const { return NULL; }
 
 void* TestPixelRef::onLockPixels(SkColorTable** color_table) {
   return pixels_.get();
 }
 
 SkPixelRef* TestPixelRef::deepCopy(SkBitmap::Config config,
                                    const SkIRect* subset) {
   this->ref();
   return this;
 }
 
-TestLazyPixelRef::TestLazyPixelRef(int width, int height)
-    : pixels_(new char[4 * width * height]) {}
-
-TestLazyPixelRef::~TestLazyPixelRef() {}
-
-SkFlattenable::Factory TestLazyPixelRef::getFactory() const { return NULL; }
-
-void* TestLazyPixelRef::onLockPixels(SkColorTable** color_table) {
-  return pixels_.get();
-}
-
-bool TestLazyPixelRef::PrepareToDecode(const PrepareParams& params) {
-  return true;
-}
-
-bool TestLazyPixelRef::MaybeDecoded() {
-  return true;
-}
-
-SkPixelRef* TestLazyPixelRef::deepCopy(SkBitmap::Config config,
-                                       const SkIRect* subset) {
-  this->ref();
-  return this;
-}
-
 void CreateBitmap(gfx::Size size, const char* uri, SkBitmap* bitmap) {
-  skia::RefPtr<TestLazyPixelRef> lazy_pixel_ref =
-      skia::AdoptRef(new TestLazyPixelRef(size.width(), size.height()));
-  lazy_pixel_ref->setURI(uri);
+  skia::RefPtr<TestPixelRef> pixel_ref =
+      skia::AdoptRef(new TestPixelRef(size.width(), size.height()));
+  pixel_ref->setURI(uri);
 
   bitmap->setConfig(SkBitmap::kARGB_8888_Config, size.width(), size.height());
-  bitmap->setPixelRef(lazy_pixel_ref.get());
+  bitmap->setPixelRef(pixel_ref.get());
 }
 
 SkCanvas* StartRecording(SkPicture* picture, gfx::Rect layer_rect) {
   SkCanvas* canvas = picture->beginRecording(
       layer_rect.width(),
       layer_rect.height(),
       SkPicture::kUsePathBoundsForClip_RecordingFlag |
           SkPicture::kOptimizeForClippedPlayback_RecordingFlag);
 
   canvas->save();
   canvas->translate(-layer_rect.x(), -layer_rect.y());
   canvas->clipRect(SkRect::MakeXYWH(
       layer_rect.x(), layer_rect.y(), layer_rect.width(), layer_rect.height()));
 
   return canvas;
 }
 
 void StopRecording(SkPicture* picture, SkCanvas* canvas) {
   canvas->restore();
   picture->endRecording();
 }
 
 }  // namespace
 
-TEST(LazyPixelRefUtilsTest, DrawPaint) {
+TEST(DiscardablePixelRefUtilsTest, DrawPaint) {
   gfx::Rect layer_rect(0, 0, 256, 256);
 
   skia::RefPtr<SkPicture> picture = skia::AdoptRef(new SkPicture);
   SkCanvas* canvas = StartRecording(picture.get(), layer_rect);
 
-  TestLazyShader first_shader;
+  TestDiscardableShader first_shader;
   SkPaint first_paint;
   first_paint.setShader(&first_shader);
 
-  TestLazyShader second_shader;
+  TestDiscardableShader second_shader;
   SkPaint second_paint;
   second_paint.setShader(&second_shader);
 
-  TestLazyShader third_shader;
+  TestDiscardableShader third_shader;
   SkPaint third_paint;
   third_paint.setShader(&third_shader);
 
   canvas->drawPaint(first_paint);
   canvas->clipRect(SkRect::MakeXYWH(34, 45, 56, 67));
   canvas->drawPaint(second_paint);
   // Total clip is now (34, 45, 56, 55)
   canvas->clipRect(SkRect::MakeWH(100, 100));
   canvas->drawPaint(third_paint);
 
   StopRecording(picture.get(), canvas);
 
-  std::vector<skia::LazyPixelRefUtils::PositionLazyPixelRef> pixel_refs;
-  skia::LazyPixelRefUtils::GatherPixelRefs(picture.get(), &pixel_refs);
+  std::vector<skia::DiscardablePixelRefUtils::PositionPixelRef> pixel_refs;
+  skia::DiscardablePixelRefUtils::GatherPixelRefs(picture.get(), &pixel_refs);
 
   EXPECT_EQ(3u, pixel_refs.size());
   EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 0, 256, 256),
                        gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect));
   EXPECT_FLOAT_RECT_EQ(gfx::RectF(34, 45, 56, 67),
                        gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect));
   EXPECT_FLOAT_RECT_EQ(gfx::RectF(34, 45, 56, 55),
                        gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect));
 }
 
-TEST(LazyPixelRefUtilsTest, DrawPoints) {
+TEST(DiscardablePixelRefUtilsTest, DrawPoints) {
   gfx::Rect layer_rect(0, 0, 256, 256);
 
   skia::RefPtr<SkPicture> picture = skia::AdoptRef(new SkPicture);
   SkCanvas* canvas = StartRecording(picture.get(), layer_rect);
 
-  TestLazyShader first_shader;
+  TestDiscardableShader first_shader;
   SkPaint first_paint;
   first_paint.setShader(&first_shader);
 
-  TestLazyShader second_shader;
+  TestDiscardableShader second_shader;
   SkPaint second_paint;
   second_paint.setShader(&second_shader);
 
-  TestLazyShader third_shader;
+  TestDiscardableShader third_shader;
   SkPaint third_paint;
   third_paint.setShader(&third_shader);
 
   SkPoint points[3];
   points[0].set(10, 10);
   points[1].set(100, 20);
   points[2].set(50, 100);
   // (10, 10, 90, 90).
   canvas->drawPoints(SkCanvas::kPolygon_PointMode, 3, points, first_paint);
 
   canvas->save();
 
   canvas->clipRect(SkRect::MakeWH(50, 50));
   // (10, 10, 40, 40).
   canvas->drawPoints(SkCanvas::kPolygon_PointMode, 3, points, second_paint);
 
   canvas->restore();
 
   points[0].set(50, 55);
   points[1].set(50, 55);
   points[2].set(200, 200);
   // (50, 55, 150, 145).
   canvas->drawPoints(SkCanvas::kPolygon_PointMode, 3, points, third_paint);
 
   StopRecording(picture.get(), canvas);
 
-  std::vector<skia::LazyPixelRefUtils::PositionLazyPixelRef> pixel_refs;
-  skia::LazyPixelRefUtils::GatherPixelRefs(picture.get(), &pixel_refs);
+  std::vector<skia::DiscardablePixelRefUtils::PositionPixelRef> pixel_refs;
+  skia::DiscardablePixelRefUtils::GatherPixelRefs(picture.get(), &pixel_refs);
 
   EXPECT_EQ(3u, pixel_refs.size());
   EXPECT_FLOAT_RECT_EQ(gfx::RectF(10, 10, 90, 90),
                        gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect));
   EXPECT_FLOAT_RECT_EQ(gfx::RectF(10, 10, 40, 40),
                        gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect));
   EXPECT_FLOAT_RECT_EQ(gfx::RectF(50, 55, 150, 145),
                        gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect));
 }
 
-TEST(LazyPixelRefUtilsTest, DrawRect) {
+TEST(DiscardablePixelRefUtilsTest, DrawRect) {
   gfx::Rect layer_rect(0, 0, 256, 256);
 
   skia::RefPtr<SkPicture> picture = skia::AdoptRef(new SkPicture);
   SkCanvas* canvas = StartRecording(picture.get(), layer_rect);
 
-  TestLazyShader first_shader;
+  TestDiscardableShader first_shader;
   SkPaint first_paint;
   first_paint.setShader(&first_shader);
 
-  TestLazyShader second_shader;
+  TestDiscardableShader second_shader;
   SkPaint second_paint;
   second_paint.setShader(&second_shader);
 
-  TestLazyShader third_shader;
+  TestDiscardableShader third_shader;
   SkPaint third_paint;
   third_paint.setShader(&third_shader);
 
   // (10, 20, 30, 40).
   canvas->drawRect(SkRect::MakeXYWH(10, 20, 30, 40), first_paint);
 
   canvas->save();
 
   canvas->translate(5, 17);
   // (5, 50, 25, 35)
   canvas->drawRect(SkRect::MakeXYWH(0, 33, 25, 35), second_paint);
 
   canvas->restore();
 
   canvas->clipRect(SkRect::MakeXYWH(50, 50, 50, 50));
   canvas->translate(20, 20);
   // (50, 50, 50, 50)
   canvas->drawRect(SkRect::MakeXYWH(0, 0, 100, 100), third_paint);
 
-  std::vector<skia::LazyPixelRefUtils::PositionLazyPixelRef> pixel_refs;
-  skia::LazyPixelRefUtils::GatherPixelRefs(picture.get(), &pixel_refs);
+  std::vector<skia::DiscardablePixelRefUtils::PositionPixelRef> pixel_refs;
+  skia::DiscardablePixelRefUtils::GatherPixelRefs(picture.get(), &pixel_refs);
 
   EXPECT_EQ(3u, pixel_refs.size());
   EXPECT_FLOAT_RECT_EQ(gfx::RectF(10, 20, 30, 40),
                        gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect));
   EXPECT_FLOAT_RECT_EQ(gfx::RectF(5, 50, 25, 35),
                        gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect));
   EXPECT_FLOAT_RECT_EQ(gfx::RectF(50, 50, 50, 50),
                        gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect));
 }
 
-TEST(LazyPixelRefUtilsTest, DrawRRect) {
+TEST(DiscardablePixelRefUtilsTest, DrawRRect) {
   gfx::Rect layer_rect(0, 0, 256, 256);
 
   skia::RefPtr<SkPicture> picture = skia::AdoptRef(new SkPicture);
   SkCanvas* canvas = StartRecording(picture.get(), layer_rect);
 
-  TestLazyShader first_shader;
+  TestDiscardableShader first_shader;
   SkPaint first_paint;
   first_paint.setShader(&first_shader);
 
-  TestLazyShader second_shader;
+  TestDiscardableShader second_shader;
   SkPaint second_paint;
   second_paint.setShader(&second_shader);
 
-  TestLazyShader third_shader;
+  TestDiscardableShader third_shader;
   SkPaint third_paint;
   third_paint.setShader(&third_shader);
 
   SkRRect rrect;
   rrect.setRect(SkRect::MakeXYWH(10, 20, 30, 40));
 
   // (10, 20, 30, 40).
   canvas->drawRRect(rrect, first_paint);
 
   canvas->save();
 
   canvas->translate(5, 17);
   rrect.setRect(SkRect::MakeXYWH(0, 33, 25, 35));
   // (5, 50, 25, 35)
   canvas->drawRRect(rrect, second_paint);
 
   canvas->restore();
 
   canvas->clipRect(SkRect::MakeXYWH(50, 50, 50, 50));
   canvas->translate(20, 20);
   rrect.setRect(SkRect::MakeXYWH(0, 0, 100, 100));
   // (50, 50, 50, 50)
   canvas->drawRRect(rrect, third_paint);
 
-  std::vector<skia::LazyPixelRefUtils::PositionLazyPixelRef> pixel_refs;
-  skia::LazyPixelRefUtils::GatherPixelRefs(picture.get(), &pixel_refs);
+  std::vector<skia::DiscardablePixelRefUtils::PositionPixelRef> pixel_refs;
+  skia::DiscardablePixelRefUtils::GatherPixelRefs(picture.get(), &pixel_refs);
 
   EXPECT_EQ(3u, pixel_refs.size());
   EXPECT_FLOAT_RECT_EQ(gfx::RectF(10, 20, 30, 40),
                        gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect));
   EXPECT_FLOAT_RECT_EQ(gfx::RectF(5, 50, 25, 35),
                        gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect));
   EXPECT_FLOAT_RECT_EQ(gfx::RectF(50, 50, 50, 50),
                        gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect));
 }
 
-TEST(LazyPixelRefUtilsTest, DrawOval) {
+TEST(DiscardablePixelRefUtilsTest, DrawOval) {
   gfx::Rect layer_rect(0, 0, 256, 256);
 
   skia::RefPtr<SkPicture> picture = skia::AdoptRef(new SkPicture);
   SkCanvas* canvas = StartRecording(picture.get(), layer_rect);
 
-  TestLazyShader first_shader;
+  TestDiscardableShader first_shader;
   SkPaint first_paint;
   first_paint.setShader(&first_shader);
 
-  TestLazyShader second_shader;
+  TestDiscardableShader second_shader;
   SkPaint second_paint;
   second_paint.setShader(&second_shader);
 
-  TestLazyShader third_shader;
+  TestDiscardableShader third_shader;
   SkPaint third_paint;
   third_paint.setShader(&third_shader);
 
   canvas->save();
 
   canvas->scale(2, 0.5);
   // (20, 10, 60, 20).
   canvas->drawOval(SkRect::MakeXYWH(10, 20, 30, 40), first_paint);
 
   canvas->restore();
   canvas->save();
 
   canvas->translate(1, 2);
   // (1, 35, 25, 35)
   canvas->drawRect(SkRect::MakeXYWH(0, 33, 25, 35), second_paint);
 
   canvas->restore();
 
   canvas->clipRect(SkRect::MakeXYWH(50, 50, 50, 50));
   canvas->translate(20, 20);
   // (50, 50, 50, 50)
   canvas->drawRect(SkRect::MakeXYWH(0, 0, 100, 100), third_paint);
 
-  std::vector<skia::LazyPixelRefUtils::PositionLazyPixelRef> pixel_refs;
-  skia::LazyPixelRefUtils::GatherPixelRefs(picture.get(), &pixel_refs);
+  std::vector<skia::DiscardablePixelRefUtils::PositionPixelRef> pixel_refs;
+  skia::DiscardablePixelRefUtils::GatherPixelRefs(picture.get(), &pixel_refs);
 
   EXPECT_EQ(3u, pixel_refs.size());
   EXPECT_FLOAT_RECT_EQ(gfx::RectF(20, 10, 60, 20),
                        gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect));
   EXPECT_FLOAT_RECT_EQ(gfx::RectF(1, 35, 25, 35),
                        gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect));
   EXPECT_FLOAT_RECT_EQ(gfx::RectF(50, 50, 50, 50),
                        gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect));
 }
 
-TEST(LazyPixelRefUtilsTest, DrawPath) {
+TEST(DiscardablePixelRefUtilsTest, DrawPath) {
   gfx::Rect layer_rect(0, 0, 256, 256);
 
   skia::RefPtr<SkPicture> picture = skia::AdoptRef(new SkPicture);
   SkCanvas* canvas = StartRecording(picture.get(), layer_rect);
 
-  TestLazyShader first_shader;
+  TestDiscardableShader first_shader;
   SkPaint first_paint;
   first_paint.setShader(&first_shader);
 
-  TestLazyShader second_shader;
+  TestDiscardableShader second_shader;
   SkPaint second_paint;
   second_paint.setShader(&second_shader);
 
   SkPath path;
   path.moveTo(12, 13);
   path.lineTo(50, 50);
   path.lineTo(22, 101);
 
   // (12, 13, 38, 88).
   canvas->drawPath(path, first_paint);
 
   canvas->save();
   canvas->clipRect(SkRect::MakeWH(50, 50));
 
   // (12, 13, 38, 37).
   canvas->drawPath(path, second_paint);
 
   canvas->restore();
 
   StopRecording(picture.get(), canvas);
 
-  std::vector<skia::LazyPixelRefUtils::PositionLazyPixelRef> pixel_refs;
-  skia::LazyPixelRefUtils::GatherPixelRefs(picture.get(), &pixel_refs);
+  std::vector<skia::DiscardablePixelRefUtils::PositionPixelRef> pixel_refs;
+  skia::DiscardablePixelRefUtils::GatherPixelRefs(picture.get(), &pixel_refs);
 
   EXPECT_EQ(2u, pixel_refs.size());
   EXPECT_FLOAT_RECT_EQ(gfx::RectF(12, 13, 38, 88),
                        gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect));
   EXPECT_FLOAT_RECT_EQ(gfx::RectF(12, 13, 38, 37),
                        gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect));
 }
 
-TEST(LazyPixelRefUtilsTest, DrawBitmap) {
+TEST(DiscardablePixelRefUtilsTest, DrawBitmap) {
   gfx::Rect layer_rect(0, 0, 256, 256);
 
   skia::RefPtr<SkPicture> picture = skia::AdoptRef(new SkPicture);
   SkCanvas* canvas = StartRecording(picture.get(), layer_rect);
 
   SkBitmap first;
-  CreateBitmap(gfx::Size(50, 50), "lazy", &first);
+  CreateBitmap(gfx::Size(50, 50), "discardable", &first);
   SkBitmap second;
-  CreateBitmap(gfx::Size(50, 50), "lazy", &second);
+  CreateBitmap(gfx::Size(50, 50), "discardable", &second);
   SkBitmap third;
-  CreateBitmap(gfx::Size(50, 50), "lazy", &third);
+  CreateBitmap(gfx::Size(50, 50), "discardable", &third);
   SkBitmap fourth;
-  CreateBitmap(gfx::Size(50, 1), "lazy", &fourth);
+  CreateBitmap(gfx::Size(50, 1), "discardable", &fourth);
   SkBitmap fifth;
-  CreateBitmap(gfx::Size(10, 10), "lazy", &fifth);
+  CreateBitmap(gfx::Size(10, 10), "discardable", &fifth);
 
   canvas->save();
 
   // At (0, 0).
   canvas->drawBitmap(first, 0, 0);
   canvas->translate(25, 0);
   // At (25, 0).
   canvas->drawBitmap(second, 0, 0);
   canvas->translate(0, 50);
   // At (50, 50).
   canvas->drawBitmap(third, 25, 0);
 
   canvas->restore();
   canvas->save();
 
   canvas->translate(1, 0);
   canvas->rotate(90);
   // At (1, 0), rotated 90 degrees
   canvas->drawBitmap(fourth, 0, 0);
 
   canvas->restore();
 
   canvas->scale(5, 6);
   // At (0, 0), scaled by 5 and 6
   canvas->drawBitmap(fifth, 0, 0);
 
   StopRecording(picture.get(), canvas);
 
-  std::vector<skia::LazyPixelRefUtils::PositionLazyPixelRef> pixel_refs;
-  skia::LazyPixelRefUtils::GatherPixelRefs(picture.get(), &pixel_refs);
+  std::vector<skia::DiscardablePixelRefUtils::PositionPixelRef> pixel_refs;
+  skia::DiscardablePixelRefUtils::GatherPixelRefs(picture.get(), &pixel_refs);
 
   EXPECT_EQ(5u, pixel_refs.size());
   EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 0, 50, 50),
                        gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect));
   EXPECT_FLOAT_RECT_EQ(gfx::RectF(25, 0, 50, 50),
                        gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect));
   EXPECT_FLOAT_RECT_EQ(gfx::RectF(50, 50, 50, 50),
                        gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect));
   EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 0, 1, 50),
                        gfx::SkRectToRectF(pixel_refs[3].pixel_ref_rect));
   EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 0, 50, 60),
                        gfx::SkRectToRectF(pixel_refs[4].pixel_ref_rect));
 
 }
 
-TEST(LazyPixelRefUtilsTest, DrawBitmapRect) {
+TEST(DiscardablePixelRefUtilsTest, DrawBitmapRect) {
   gfx::Rect layer_rect(0, 0, 256, 256);
 
   skia::RefPtr<SkPicture> picture = skia::AdoptRef(new SkPicture);
   SkCanvas* canvas = StartRecording(picture.get(), layer_rect);
 
   SkBitmap first;
-  CreateBitmap(gfx::Size(50, 50), "lazy", &first);
+  CreateBitmap(gfx::Size(50, 50), "discardable", &first);
   SkBitmap second;
-  CreateBitmap(gfx::Size(50, 50), "lazy", &second);
+  CreateBitmap(gfx::Size(50, 50), "discardable", &second);
   SkBitmap third;
-  CreateBitmap(gfx::Size(50, 50), "lazy", &third);
+  CreateBitmap(gfx::Size(50, 50), "discardable", &third);
 
-  TestLazyShader first_shader;
+  TestDiscardableShader first_shader;
   SkPaint first_paint;
   first_paint.setShader(&first_shader);
 
-  SkPaint non_lazy_paint;
+  SkPaint non_discardable_paint;
 
   canvas->save();
 
   // (0, 0, 100, 100).
-  canvas->drawBitmapRect(first, SkRect::MakeWH(100, 100), &non_lazy_paint);
+  canvas->drawBitmapRect(
+      first, SkRect::MakeWH(100, 100), &non_discardable_paint);
   canvas->translate(25, 0);
   // (75, 50, 10, 10).
   canvas->drawBitmapRect(
-      second, SkRect::MakeXYWH(50, 50, 10, 10), &non_lazy_paint);
+      second, SkRect::MakeXYWH(50, 50, 10, 10), &non_discardable_paint);
   canvas->translate(5, 50);
   // (0, 30, 100, 100). One from bitmap, one from paint.
   canvas->drawBitmapRect(
       third, SkRect::MakeXYWH(-30, -20, 100, 100), &first_paint);
 
   canvas->restore();
 
   StopRecording(picture.get(), canvas);
 
-  std::vector<skia::LazyPixelRefUtils::PositionLazyPixelRef> pixel_refs;
-  skia::LazyPixelRefUtils::GatherPixelRefs(picture.get(), &pixel_refs);
+  std::vector<skia::DiscardablePixelRefUtils::PositionPixelRef> pixel_refs;
+  skia::DiscardablePixelRefUtils::GatherPixelRefs(picture.get(), &pixel_refs);
 
   EXPECT_EQ(4u, pixel_refs.size());
   EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 0, 100, 100),
                        gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect));
   EXPECT_FLOAT_RECT_EQ(gfx::RectF(75, 50, 10, 10),
                        gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect));
   EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 30, 100, 100),
                        gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect));
   EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 30, 100, 100),
                        gfx::SkRectToRectF(pixel_refs[3].pixel_ref_rect));
 }
 
-TEST(LazyPixelRefUtilsTest, DrawSprite) {
+TEST(DiscardablePixelRefUtilsTest, DrawSprite) {
   gfx::Rect layer_rect(0, 0, 256, 256);
 
   skia::RefPtr<SkPicture> picture = skia::AdoptRef(new SkPicture);
   SkCanvas* canvas = StartRecording(picture.get(), layer_rect);
 
   SkBitmap first;
-  CreateBitmap(gfx::Size(50, 50), "lazy", &first);
+  CreateBitmap(gfx::Size(50, 50), "discardable", &first);
   SkBitmap second;
-  CreateBitmap(gfx::Size(50, 50), "lazy", &second);
+  CreateBitmap(gfx::Size(50, 50), "discardable", &second);
   SkBitmap third;
-  CreateBitmap(gfx::Size(50, 50), "lazy", &third);
+  CreateBitmap(gfx::Size(50, 50), "discardable", &third);
   SkBitmap fourth;
-  CreateBitmap(gfx::Size(50, 50), "lazy", &fourth);
+  CreateBitmap(gfx::Size(50, 50), "discardable", &fourth);
   SkBitmap fifth;
-  CreateBitmap(gfx::Size(50, 50), "lazy", &fifth);
+  CreateBitmap(gfx::Size(50, 50), "discardable", &fifth);
 
   canvas->save();
 
   // Sprites aren't affected by the current matrix.
 
   // (0, 0, 50, 50).
   canvas->drawSprite(first, 0, 0);
   canvas->translate(25, 0);
   // (10, 0, 50, 50).
   canvas->drawSprite(second, 10, 0);
   canvas->translate(0, 50);
   // (25, 0, 50, 50).
   canvas->drawSprite(third, 25, 0);
 
   canvas->restore();
   canvas->save();
 
   canvas->rotate(90);
   // (0, 0, 50, 50).
   canvas->drawSprite(fourth, 0, 0);
 
   canvas->restore();
 
-  TestLazyShader first_shader;
+  TestDiscardableShader first_shader;
   SkPaint first_paint;
   first_paint.setShader(&first_shader);
 
   canvas->scale(5, 6);
   // (100, 100, 50, 50).
   canvas->drawSprite(fifth, 100, 100, &first_paint);
 
   StopRecording(picture.get(), canvas);
 
-  std::vector<skia::LazyPixelRefUtils::PositionLazyPixelRef> pixel_refs;
-  skia::LazyPixelRefUtils::GatherPixelRefs(picture.get(), &pixel_refs);
+  std::vector<skia::DiscardablePixelRefUtils::PositionPixelRef> pixel_refs;
+  skia::DiscardablePixelRefUtils::GatherPixelRefs(picture.get(), &pixel_refs);
 
   EXPECT_EQ(6u, pixel_refs.size());
   EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 0, 50, 50),
                        gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect));
   EXPECT_FLOAT_RECT_EQ(gfx::RectF(10, 0, 50, 50),
                        gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect));
   EXPECT_FLOAT_RECT_EQ(gfx::RectF(25, 0, 50, 50),
                        gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect));
   EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 0, 50, 50),
                        gfx::SkRectToRectF(pixel_refs[3].pixel_ref_rect));
   EXPECT_FLOAT_RECT_EQ(gfx::RectF(100, 100, 50, 50),
                        gfx::SkRectToRectF(pixel_refs[4].pixel_ref_rect));
   EXPECT_FLOAT_RECT_EQ(gfx::RectF(100, 100, 50, 50),
                        gfx::SkRectToRectF(pixel_refs[5].pixel_ref_rect));
 }
 
-TEST(LazyPixelRefUtilsTest, DrawText) {
+TEST(DiscardablePixelRefUtilsTest, DrawText) {
   gfx::Rect layer_rect(0, 0, 256, 256);
 
   skia::RefPtr<SkPicture> picture = skia::AdoptRef(new SkPicture);
   SkCanvas* canvas = StartRecording(picture.get(), layer_rect);
 
-  TestLazyShader first_shader;
+  TestDiscardableShader first_shader;
   SkPaint first_paint;
   first_paint.setShader(&first_shader);
 
   SkPoint points[4];
   points[0].set(10, 50);
   points[1].set(20, 50);
   points[2].set(30, 50);
   points[3].set(40, 50);
 
   SkPath path;
   path.moveTo(10, 50);
   path.lineTo(20, 50);
   path.lineTo(30, 50);
   path.lineTo(40, 50);
   path.lineTo(50, 50);
 
   canvas->drawText("text", 4, 50, 50, first_paint);
   canvas->drawPosText("text", 4, points, first_paint);
   canvas->drawTextOnPath("text", 4, path, NULL, first_paint);
 
-  std::vector<skia::LazyPixelRefUtils::PositionLazyPixelRef> pixel_refs;
-  skia::LazyPixelRefUtils::GatherPixelRefs(picture.get(), &pixel_refs);
+  std::vector<skia::DiscardablePixelRefUtils::PositionPixelRef> pixel_refs;
+  skia::DiscardablePixelRefUtils::GatherPixelRefs(picture.get(), &pixel_refs);
 
   EXPECT_EQ(3u, pixel_refs.size());
 }
 
-TEST(LazyPixelRefUtilsTest, DrawVertices) {
+TEST(DiscardablePixelRefUtilsTest, DrawVertices) {
   gfx::Rect layer_rect(0, 0, 256, 256);
 
   skia::RefPtr<SkPicture> picture = skia::AdoptRef(new SkPicture);
   SkCanvas* canvas = StartRecording(picture.get(), layer_rect);
 
-  TestLazyShader first_shader;
+  TestDiscardableShader first_shader;
   SkPaint first_paint;
   first_paint.setShader(&first_shader);
 
-  TestLazyShader second_shader;
+  TestDiscardableShader second_shader;
   SkPaint second_paint;
   second_paint.setShader(&second_shader);
 
-  TestLazyShader third_shader;
+  TestDiscardableShader third_shader;
   SkPaint third_paint;
   third_paint.setShader(&third_shader);
 
   SkPoint points[3];
   SkColor colors[3];
   uint16_t indecies[3] = {0, 1, 2};
   points[0].set(10, 10);
   points[1].set(100, 20);
   points[2].set(50, 100);
   // (10, 10, 90, 90).
@@ skipping 32 matching lines @@
                        points,
                        points,
                        colors,
                        NULL,
                        indecies,
                        3,
                        third_paint);
 
   StopRecording(picture.get(), canvas);
 
-  std::vector<skia::LazyPixelRefUtils::PositionLazyPixelRef> pixel_refs;
-  skia::LazyPixelRefUtils::GatherPixelRefs(picture.get(), &pixel_refs);
+  std::vector<skia::DiscardablePixelRefUtils::PositionPixelRef> pixel_refs;
+  skia::DiscardablePixelRefUtils::GatherPixelRefs(picture.get(), &pixel_refs);
 
   EXPECT_EQ(3u, pixel_refs.size());
   EXPECT_FLOAT_RECT_EQ(gfx::RectF(10, 10, 90, 90),
                        gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect));
   EXPECT_FLOAT_RECT_EQ(gfx::RectF(10, 10, 40, 40),
                        gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect));
   EXPECT_FLOAT_RECT_EQ(gfx::RectF(50, 55, 150, 145),
                        gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect));
 }
 
 }  // namespace skia