Fix failing transferToImageBitmap layout tests and commit pixel test on Mac

third_party/WebKit/Source/platform/graphics/gpu/DrawingBufferTestHelpers.h

 // Copyright 2016 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 "gpu/command_buffer/common/capabilities.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/graphics/gpu/DrawingBuffer.h"
 #include "platform/graphics/gpu/Extensions3DUtil.h"
 #include "public/platform/WebGraphicsContext3DProvider.h"
 #include "testing/gmock/include/gmock/gmock.h"
@@ skipping 16 matching lines @@
         if (!drawingBuffer->initialize(size, multisampleExtensionSupported)) {
             drawingBuffer->beginDestruction();
             return nullptr;
         }
         return drawingBuffer.release();
     }
 
     DrawingBufferForTests(std::unique_ptr<WebGraphicsContext3DProvider> contextProvider, std::unique_ptr<Extensions3DUtil> extensionsUtil, PreserveDrawingBuffer preserve)
         : DrawingBuffer(std::move(contextProvider), std::move(extensionsUtil), false /* discardFramebufferSupported */,
             true /* wantAlphaChannel */, false /* premultipliedAlpha */, preserve, WebGL1,
-            false /* wantDepth */, false /* wantStencil */)
+            false /* wantDepth */, false /* wantStencil */,
+            DrawingBuffer::AllowChromiumImage /* ChromiumImageUsage */)
         , m_live(0)
     { }
 
     ~DrawingBufferForTests() override
     {
         if (m_live)
             *m_live = false;
     }
 
     bool* m_live;
@@ skipping 165 matching lines @@
     GLbyte m_currentMailboxByte = 0;
     IntSize m_mostRecentlyProducedSize;
     bool m_createImageChromiumFail = false;
     GLuint m_currentImageId = 1;
     HashMap<GLuint, IntSize> m_textureSizes;
     HashMap<GLuint, IntSize> m_imageSizes;
     HashMap<GLuint, GLuint> m_imageToTextureMap;
 };
 
 } // blink