cc: Audit and static_assert the types in PaintOpBuffer can be moved.

cc/paint/paint_op_buffer_unittest.cc

 // Copyright 2017 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/paint/paint_op_buffer.h"
 #include "cc/paint/display_item_list.h"
 #include "cc/test/skia_common.h"
 #include "cc/test/test_skcanvas.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/skia/include/effects/SkDashPathEffect.h"
@@ skipping 45 matching lines @@
   SaveLayerOp* save_op = static_cast<SaveLayerOp*>(*iter);
   EXPECT_EQ(save_op->bounds, rect);
   EXPECT_TRUE(save_op->flags == flags);
   ++iter;
 
   ASSERT_EQ(iter->GetType(), PaintOpType::Save);
   ++iter;
 
   ASSERT_EQ(iter->GetType(), PaintOpType::DrawColor);
   DrawColorOp* op = static_cast<DrawColorOp*>(*iter);
-  EXPECT_EQ(op->color, draw_color);
-  EXPECT_EQ(op->mode, blend);
+  EXPECT_EQ(static_cast<SkColor>(op->color), draw_color);
+  EXPECT_EQ(static_cast<SkBlendMode>(op->mode), blend);
   ++iter;
 
   ASSERT_EQ(iter->GetType(), PaintOpType::Restore);
   ++iter;
 
   EXPECT_FALSE(iter);
 }
 
 // PaintOpBuffer has a special case for first ops stored locally, so
 // make sure that appending different kind of ops as a first op works
@@ skipping 412 matching lines @@
 
   // Drawing a record with slow paths into another adds the same
   // number of slow paths as the record.
   auto buffer2 = sk_make_sp<PaintOpBuffer>();
   EXPECT_EQ(buffer2->numSlowPaths(), 0);
   buffer2->push<DrawRecordOp>(buffer);
   EXPECT_EQ(buffer->numSlowPaths(), buffer2->numSlowPaths());
 }
 
 }  // namespace cc