cc: Remove PicturePileBase

cc/resources/picture_pile_unittest.cc

Index: cc/resources/picture_pile_unittest.cc
diff --git a/cc/resources/picture_pile_unittest.cc b/cc/resources/picture_pile_unittest.cc
index 8ca060b62c94e13fe4a14b547f0225c69a0c2692..6124394a4a717f51b7b39514d4d23fe1fab89369 100644
--- a/cc/resources/picture_pile_unittest.cc
+++ b/cc/resources/picture_pile_unittest.cc
@@ -7,6 +7,7 @@
 
 #include "cc/resources/picture_pile.h"
 #include "cc/test/fake_content_layer_client.h"
+#include "cc/test/test_picture_pile.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gfx/geometry/rect_conversions.h"
 #include "ui/gfx/geometry/size_conversions.h"
@@ -14,31 +15,6 @@
 namespace cc {
 namespace {
 
-class TestPicturePile : public PicturePile {
- public:
-  ~TestPicturePile() override {}
-
-  using PicturePile::buffer_pixels;
-  using PicturePile::CanRasterSlowTileCheck;
-  using PicturePile::Clear;
-
-  PictureMap& picture_map() { return picture_map_; }
-  const gfx::Rect& recorded_viewport() const { return recorded_viewport_; }
-
-  bool CanRasterLayerRect(gfx::Rect layer_rect) {
-    layer_rect.Intersect(gfx::Rect(tiling_.tiling_size()));
-    if (recorded_viewport_.Contains(layer_rect))
-      return true;
-    return CanRasterSlowTileCheck(layer_rect);
-  }
-
-  bool HasRecordings() const { return has_any_recordings_; }
-
-  typedef PicturePile::PictureInfo PictureInfo;
-  typedef PicturePile::PictureMapKey PictureMapKey;
-  typedef PicturePile::PictureMap PictureMap;
-};
-
 class PicturePileTestBase {
  public:
   PicturePileTestBase()