Determine mask UVs based on texture size

cc/test/fake_picture_layer.cc

 // Copyright 2012 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/test/fake_picture_layer.h"
 
 #include "cc/test/fake_picture_layer_impl.h"
 
 namespace cc {
 
@@ skipping 13 matching lines @@
       always_update_resources_(false),
       force_unsuitable_for_gpu_rasterization_(false) {
   SetBounds(gfx::Size(1, 1));
   SetIsDrawable(true);
 }
 
 FakePictureLayer::~FakePictureLayer() {}
 
 std::unique_ptr<LayerImpl> FakePictureLayer::CreateLayerImpl(
     LayerTreeImpl* tree_impl) {
+  std::unique_ptr<FakePictureLayerImpl> layer_impl;
   switch (mask_type()) {
     case Layer::LayerMaskType::NOT_MASK:
-      return FakePictureLayerImpl::Create(tree_impl, id());
+      layer_impl = FakePictureLayerImpl::Create(tree_impl, id());
+      break;
     case Layer::LayerMaskType::MULTI_TEXTURE_MASK:
-      return FakePictureLayerImpl::CreateMask(tree_impl, id());
+      layer_impl = FakePictureLayerImpl::CreateMask(tree_impl, id());
+      break;
     case Layer::LayerMaskType::SINGLE_TEXTURE_MASK:
-      return FakePictureLayerImpl::CreateSingleTextureMask(tree_impl, id());
+      layer_impl =
+          FakePictureLayerImpl::CreateSingleTextureMask(tree_impl, id());
+      break;
     default:
       NOTREACHED();
       break;
   }
-  return nullptr;
+
+  if (!fixed_tile_size_.IsEmpty())
+    layer_impl->set_fixed_tile_size(fixed_tile_size_);
+
+  return std::move(layer_impl);
 }
 
 bool FakePictureLayer::Update() {
   bool updated = PictureLayer::Update();
   update_count_++;
   return updated || always_update_resources_;
 }
 
 bool FakePictureLayer::IsSuitableForGpuRasterization() const {
   if (force_unsuitable_for_gpu_rasterization_)
     return false;
   return PictureLayer::IsSuitableForGpuRasterization();
 }
 
 }  // namespace cc