Remove some unneeded DEPS from //sky

sky/engine/platform/graphics/gpu/DrawingBufferTest.cpp

Index: sky/engine/platform/graphics/gpu/DrawingBufferTest.cpp
diff --git a/sky/engine/platform/graphics/gpu/DrawingBufferTest.cpp b/sky/engine/platform/graphics/gpu/DrawingBufferTest.cpp
deleted file mode 100644
index 68454f51b5a3a6f67838b000c82cac10a56c6010..0000000000000000000000000000000000000000
--- a/sky/engine/platform/graphics/gpu/DrawingBufferTest.cpp
+++ /dev/null
@@ -1,678 +0,0 @@
-/*
- * Copyright (C) 2013 Google Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-
-#include "sky/engine/platform/graphics/gpu/DrawingBuffer.h"
-
-#include "gen/sky/platform/RuntimeEnabledFeatures.h"
-#include "sky/engine/platform/graphics/ImageBuffer.h"
-#include "sky/engine/platform/graphics/UnacceleratedImageBufferSurface.h"
-#include "sky/engine/platform/graphics/gpu/Extensions3DUtil.h"
-#include "sky/engine/platform/graphics/test/MockWebGraphicsContext3D.h"
-#include "sky/engine/public/platform/Platform.h"
-#include "sky/engine/public/platform/WebExternalTextureMailbox.h"
-#include "sky/engine/wtf/RefPtr.h"
-
-#include <gmock/gmock.h>
-#include <gtest/gtest.h>
-
-using namespace blink;
-using testing::Test;
-using testing::_;
-
-namespace {
-
-class FakeContextEvictionManager : public ContextEvictionManager {
-public:
-    void forciblyLoseOldestContext(const String& reason) { }
-    IntSize oldestContextSize() { return IntSize(); }
-};
-
-class WebGraphicsContext3DForTests : public MockWebGraphicsContext3D {
-public:
-    WebGraphicsContext3DForTests()
-        : MockWebGraphicsContext3D()
-        , m_boundTexture(0)
-        , m_currentMailboxByte(0)
-        , m_mostRecentlyWaitedSyncPoint(0)
-        , m_currentImageId(1) { }
-
-    virtual void bindTexture(WGC3Denum target, WebGLId texture)
-    {
-        if (target == GL_TEXTURE_2D) {
-            m_boundTexture = texture;
-        }
-    }
-
-    virtual void texImage2D(WGC3Denum target, WGC3Dint level, WGC3Denum internalformat, WGC3Dsizei width, WGC3Dsizei height, WGC3Dint border, WGC3Denum format, WGC3Denum type, const void* pixels)
-    {
-        if (target == GL_TEXTURE_2D && !level) {
-            m_textureSizes.set(m_boundTexture, IntSize(width, height));
-        }
-    }
-
-    virtual void genMailboxCHROMIUM(WGC3Dbyte* mailbox)
-    {
-        ++m_currentMailboxByte;
-        WebExternalTextureMailbox temp;
-        memset(mailbox, m_currentMailboxByte, sizeof(temp.name));
-    }
-
-    virtual void produceTextureDirectCHROMIUM(WebGLId texture, WGC3Denum target, const WGC3Dbyte* mailbox)
-    {
-        ASSERT_EQ(target, static_cast<WGC3Denum>(GL_TEXTURE_2D));
-        ASSERT_TRUE(m_textureSizes.contains(texture));
-        m_mostRecentlyProducedSize = m_textureSizes.get(texture);
-    }
-
-    IntSize mostRecentlyProducedSize()
-    {
-        return m_mostRecentlyProducedSize;
-    }
-
-    virtual unsigned insertSyncPoint()
-    {
-        static unsigned syncPointGenerator = 0;
-        return ++syncPointGenerator;
-    }
-
-    virtual void waitSyncPoint(unsigned syncPoint)
-    {
-        m_mostRecentlyWaitedSyncPoint = syncPoint;
-    }
-
-    virtual WGC3Duint createImageCHROMIUM(WGC3Dsizei width, WGC3Dsizei height, WGC3Denum internalformat, WGC3Denum usage)
-    {
-        m_imageSizes.set(m_currentImageId, IntSize(width, height));
-        return m_currentImageId++;
-    }
-
-    MOCK_METHOD1(destroyImageMock, void(WGC3Duint imageId));
-    void destroyImageCHROMIUM(WGC3Duint imageId)
-    {
-        m_imageSizes.remove(imageId);
-        // No textures should be bound to this.
-        ASSERT(m_imageToTextureMap.find(imageId) == m_imageToTextureMap.end());
-        m_imageSizes.remove(imageId);
-        destroyImageMock(imageId);
-    }
-
-    MOCK_METHOD1(bindTexImage2DMock, void(WGC3Dint imageId));
-    void bindTexImage2DCHROMIUM(WGC3Denum target, WGC3Dint imageId)
-    {
-        if (target == GL_TEXTURE_2D) {
-            m_textureSizes.set(m_boundTexture, m_imageSizes.find(imageId)->value);
-            m_imageToTextureMap.set(imageId, m_boundTexture);
-            bindTexImage2DMock(imageId);
-        }
-    }
-
-    MOCK_METHOD1(releaseTexImage2DMock, void(WGC3Dint imageId));
-    void releaseTexImage2DCHROMIUM(WGC3Denum target, WGC3Dint imageId)
-    {
-        if (target == GL_TEXTURE_2D) {
-            m_imageSizes.set(m_currentImageId, IntSize());
-            m_imageToTextureMap.remove(imageId);
-            releaseTexImage2DMock(imageId);
-        }
-    }
-
-    unsigned mostRecentlyWaitedSyncPoint()
-    {
-        return m_mostRecentlyWaitedSyncPoint;
-    }
-
-    WGC3Duint nextImageIdToBeCreated()
-    {
-        return m_currentImageId;
-    }
-
-private:
-    WebGLId m_boundTexture;
-    HashMap<WebGLId, IntSize> m_textureSizes;
-    WGC3Dbyte m_currentMailboxByte;
-    IntSize m_mostRecentlyProducedSize;
-    unsigned m_mostRecentlyWaitedSyncPoint;
-    WGC3Duint m_currentImageId;
-    HashMap<WGC3Duint, IntSize> m_imageSizes;
-    HashMap<WGC3Duint, WebGLId> m_imageToTextureMap;
-};
-
-static const int initialWidth = 100;
-static const int initialHeight = 100;
-static const int alternateHeight = 50;
-
-class DrawingBufferForTests : public DrawingBuffer {
-public:
-    static PassRefPtr<DrawingBufferForTests> create(PassOwnPtr<WebGraphicsContext3D> context,
-        const IntSize& size, PreserveDrawingBuffer preserve, PassRefPtr<ContextEvictionManager> contextEvictionManager)
-    {
-        OwnPtr<Extensions3DUtil> extensionsUtil = Extensions3DUtil::create(context.get());
-        RefPtr<DrawingBufferForTests> drawingBuffer =
-            adoptRef(new DrawingBufferForTests(context, extensionsUtil.release(), preserve, contextEvictionManager));
-        if (!drawingBuffer->initialize(size)) {
-            drawingBuffer->beginDestruction();
-            return PassRefPtr<DrawingBufferForTests>();
-        }
-        return drawingBuffer.release();
-    }
-
-    DrawingBufferForTests(PassOwnPtr<WebGraphicsContext3D> context,
-        PassOwnPtr<Extensions3DUtil> extensionsUtil,
-        PreserveDrawingBuffer preserve,
-        PassRefPtr<ContextEvictionManager> contextEvictionManager)
-        : DrawingBuffer(context, extensionsUtil, false /* multisampleExtensionSupported */,
-            false /* packedDepthStencilExtensionSupported */, preserve, WebGraphicsContext3D::Attributes(), contextEvictionManager)
-        , m_live(0)
-    { }
-
-    virtual ~DrawingBufferForTests()
-    {
-        if (m_live)
-            *m_live = false;
-    }
-
-    bool* m_live;
-};
-
-class DrawingBufferTest : public Test {
-protected:
-    void SetUp() override
-    {
-        RefPtr<FakeContextEvictionManager> contextEvictionManager = adoptRef(new FakeContextEvictionManager());
-        OwnPtr<WebGraphicsContext3DForTests> context = adoptPtr(new WebGraphicsContext3DForTests);
-        m_context = context.get();
-        m_drawingBuffer = DrawingBufferForTests::create(context.release(),
-            IntSize(initialWidth, initialHeight), DrawingBuffer::Preserve, contextEvictionManager.release());
-    }
-
-    WebGraphicsContext3DForTests* webContext()
-    {
-        return m_context;
-    }
-
-    WebGraphicsContext3DForTests* m_context;
-    RefPtr<DrawingBufferForTests> m_drawingBuffer;
-};
-
-TEST_F(DrawingBufferTest, testPaintRenderingResultsToCanvas)
-{
-    OwnPtr<ImageBufferSurface> imageBufferSurface = adoptPtr(new UnacceleratedImageBufferSurface(IntSize(initialWidth, initialHeight)));
-    EXPECT_FALSE(!imageBufferSurface);
-    EXPECT_TRUE(imageBufferSurface->isValid());
-    OwnPtr<ImageBuffer> imageBuffer = ImageBuffer::create(imageBufferSurface.release());
-    EXPECT_FALSE(!imageBuffer);
-    EXPECT_FALSE(imageBuffer->isAccelerated());
-    EXPECT_FALSE(imageBuffer->bitmap().isNull());
-    m_drawingBuffer->paintRenderingResultsToCanvas(imageBuffer.get());
-    EXPECT_FALSE(imageBuffer->isAccelerated());
-    EXPECT_FALSE(imageBuffer->bitmap().isNull());
-    m_drawingBuffer->beginDestruction();
-}
-
-TEST_F(DrawingBufferTest, verifyResizingProperlyAffectsMailboxes)
-{
-    WebExternalTextureMailbox mailbox;
-
-    IntSize initialSize(initialWidth, initialHeight);
-    IntSize alternateSize(initialWidth, alternateHeight);
-
-    // Produce one mailbox at size 100x100.
-    m_drawingBuffer->markContentsChanged();
-    EXPECT_TRUE(m_drawingBuffer->prepareMailbox(&mailbox, 0));
-    EXPECT_EQ(initialSize, webContext()->mostRecentlyProducedSize());
-
-    // Resize to 100x50.
-    m_drawingBuffer->reset(IntSize(initialWidth, alternateHeight));
-    m_drawingBuffer->mailboxReleased(mailbox, false);
-
-    // Produce a mailbox at this size.
-    m_drawingBuffer->markContentsChanged();
-    EXPECT_TRUE(m_drawingBuffer->prepareMailbox(&mailbox, 0));
-    EXPECT_EQ(alternateSize, webContext()->mostRecentlyProducedSize());
-
-    // Reset to initial size.
-    m_drawingBuffer->reset(IntSize(initialWidth, initialHeight));
-    m_drawingBuffer->mailboxReleased(mailbox, false);
-
-    // Prepare another mailbox and verify that it's the correct size.
-    m_drawingBuffer->markContentsChanged();
-    EXPECT_TRUE(m_drawingBuffer->prepareMailbox(&mailbox, 0));
-    EXPECT_EQ(initialSize, webContext()->mostRecentlyProducedSize());
-
-    // Prepare one final mailbox and verify that it's the correct size.
-    m_drawingBuffer->mailboxReleased(mailbox, false);
-    m_drawingBuffer->markContentsChanged();
-    EXPECT_TRUE(m_drawingBuffer->prepareMailbox(&mailbox, 0));
-    EXPECT_EQ(initialSize, webContext()->mostRecentlyProducedSize());
-    m_drawingBuffer->beginDestruction();
-}
-
-TEST_F(DrawingBufferTest, verifyDestructionCompleteAfterAllMailboxesReleased)
-{
-    bool live = true;
-    m_drawingBuffer->m_live = &live;
-
-    WebExternalTextureMailbox mailbox1;
-    WebExternalTextureMailbox mailbox2;
-    WebExternalTextureMailbox mailbox3;
-
-    IntSize initialSize(initialWidth, initialHeight);
-
-    // Produce mailboxes.
-    m_drawingBuffer->markContentsChanged();
-    EXPECT_TRUE(m_drawingBuffer->prepareMailbox(&mailbox1, 0));
-    m_drawingBuffer->markContentsChanged();
-    EXPECT_TRUE(m_drawingBuffer->prepareMailbox(&mailbox2, 0));
-    m_drawingBuffer->markContentsChanged();
-    EXPECT_TRUE(m_drawingBuffer->prepareMailbox(&mailbox3, 0));
-
-    m_drawingBuffer->markContentsChanged();
-    m_drawingBuffer->mailboxReleased(mailbox1, false);
-
-    m_drawingBuffer->beginDestruction();
-    EXPECT_EQ(live, true);
-
-    DrawingBufferForTests* weakPointer = m_drawingBuffer.get();
-    m_drawingBuffer.clear();
-    EXPECT_EQ(live, true);
-
-    weakPointer->markContentsChanged();
-    weakPointer->mailboxReleased(mailbox2, false);
-    EXPECT_EQ(live, true);
-
-    weakPointer->markContentsChanged();
-    weakPointer->mailboxReleased(mailbox3, false);
-    EXPECT_EQ(live, false);
-}
-
-TEST_F(DrawingBufferTest, verifyDrawingBufferStaysAliveIfResourcesAreLost)
-{
-    bool live = true;
-    m_drawingBuffer->m_live = &live;
-    WebExternalTextureMailbox mailbox1;
-    WebExternalTextureMailbox mailbox2;
-    WebExternalTextureMailbox mailbox3;
-
-    m_drawingBuffer->markContentsChanged();
-    EXPECT_TRUE(m_drawingBuffer->prepareMailbox(&mailbox1, 0));
-    m_drawingBuffer->markContentsChanged();
-    EXPECT_TRUE(m_drawingBuffer->prepareMailbox(&mailbox2, 0));
-    m_drawingBuffer->markContentsChanged();
-    EXPECT_TRUE(m_drawingBuffer->prepareMailbox(&mailbox3, 0));
-
-    m_drawingBuffer->markContentsChanged();
-    m_drawingBuffer->mailboxReleased(mailbox1, true);
-    EXPECT_EQ(live, true);
-
-    m_drawingBuffer->beginDestruction();
-    EXPECT_EQ(live, true);
-
-    m_drawingBuffer->markContentsChanged();
-    m_drawingBuffer->mailboxReleased(mailbox2, false);
-    EXPECT_EQ(live, true);
-
-    DrawingBufferForTests* weakPtr = m_drawingBuffer.get();
-    m_drawingBuffer.clear();
-    EXPECT_EQ(live, true);
-
-    weakPtr->markContentsChanged();
-    weakPtr->mailboxReleased(mailbox3, true);
-    EXPECT_EQ(live, false);
-}
-
-class TextureMailboxWrapper {
-public:
-    explicit TextureMailboxWrapper(const WebExternalTextureMailbox& mailbox)
-        : m_mailbox(mailbox)
-    { }
-
-    bool operator==(const TextureMailboxWrapper& other) const
-    {
-        return !memcmp(m_mailbox.name, other.m_mailbox.name, sizeof(m_mailbox.name));
-    }
-
-    bool operator!=(const TextureMailboxWrapper& other) const
-    {
-        return !(*this == other);
-    }
-
-private:
-    WebExternalTextureMailbox m_mailbox;
-};
-
-TEST_F(DrawingBufferTest, verifyOnlyOneRecycledMailboxMustBeKept)
-{
-    WebExternalTextureMailbox mailbox1;
-    WebExternalTextureMailbox mailbox2;
-    WebExternalTextureMailbox mailbox3;
-
-    // Produce mailboxes.
-    m_drawingBuffer->markContentsChanged();
-    EXPECT_TRUE(m_drawingBuffer->prepareMailbox(&mailbox1, 0));
-    m_drawingBuffer->markContentsChanged();
-    EXPECT_TRUE(m_drawingBuffer->prepareMailbox(&mailbox2, 0));
-    m_drawingBuffer->markContentsChanged();
-    EXPECT_TRUE(m_drawingBuffer->prepareMailbox(&mailbox3, 0));
-
-    // Release mailboxes by specific order; 1, 3, 2.
-    m_drawingBuffer->markContentsChanged();
-    m_drawingBuffer->mailboxReleased(mailbox1, false);
-    m_drawingBuffer->markContentsChanged();
-    m_drawingBuffer->mailboxReleased(mailbox3, false);
-    m_drawingBuffer->markContentsChanged();
-    m_drawingBuffer->mailboxReleased(mailbox2, false);
-
-    // The first recycled mailbox must be 2. 1 and 3 were deleted by FIFO order because
-    // DrawingBuffer never keeps more than one mailbox.
-    WebExternalTextureMailbox recycledMailbox1;
-    m_drawingBuffer->markContentsChanged();
-    EXPECT_TRUE(m_drawingBuffer->prepareMailbox(&recycledMailbox1, 0));
-    EXPECT_EQ(TextureMailboxWrapper(mailbox2), TextureMailboxWrapper(recycledMailbox1));
-
-    // The second recycled mailbox must be a new mailbox.
-    WebExternalTextureMailbox recycledMailbox2;
-    m_drawingBuffer->markContentsChanged();
-    EXPECT_TRUE(m_drawingBuffer->prepareMailbox(&recycledMailbox2, 0));
-    EXPECT_NE(TextureMailboxWrapper(mailbox1), TextureMailboxWrapper(recycledMailbox2));
-    EXPECT_NE(TextureMailboxWrapper(mailbox2), TextureMailboxWrapper(recycledMailbox2));
-    EXPECT_NE(TextureMailboxWrapper(mailbox3), TextureMailboxWrapper(recycledMailbox2));
-
-    m_drawingBuffer->mailboxReleased(recycledMailbox1, false);
-    m_drawingBuffer->mailboxReleased(recycledMailbox2, false);
-    m_drawingBuffer->beginDestruction();
-}
-
-TEST_F(DrawingBufferTest, verifyInsertAndWaitSyncPointCorrectly)
-{
-    WebExternalTextureMailbox mailbox;
-
-    // Produce mailboxes.
-    m_drawingBuffer->markContentsChanged();
-    EXPECT_EQ(0u, webContext()->mostRecentlyWaitedSyncPoint());
-    EXPECT_TRUE(m_drawingBuffer->prepareMailbox(&mailbox, 0));
-    // prepareMailbox() does not wait for any sync point.
-    EXPECT_EQ(0u, webContext()->mostRecentlyWaitedSyncPoint());
-
-    unsigned waitSyncPoint = webContext()->insertSyncPoint();
-    mailbox.syncPoint = waitSyncPoint;
-    m_drawingBuffer->mailboxReleased(mailbox, false);
-    // m_drawingBuffer will wait for the sync point when recycling.
-    EXPECT_EQ(0u, webContext()->mostRecentlyWaitedSyncPoint());
-
-    m_drawingBuffer->markContentsChanged();
-    EXPECT_TRUE(m_drawingBuffer->prepareMailbox(&mailbox, 0));
-    // m_drawingBuffer waits for the sync point when recycling in prepareMailbox().
-    EXPECT_EQ(waitSyncPoint, webContext()->mostRecentlyWaitedSyncPoint());
-
-    m_drawingBuffer->beginDestruction();
-    waitSyncPoint = webContext()->insertSyncPoint();
-    mailbox.syncPoint = waitSyncPoint;
-    m_drawingBuffer->mailboxReleased(mailbox, false);
-    // m_drawingBuffer waits for the sync point because the destruction is in progress.
-    EXPECT_EQ(waitSyncPoint, webContext()->mostRecentlyWaitedSyncPoint());
-}
-
-class DrawingBufferImageChromiumTest : public DrawingBufferTest {
-protected:
-    void SetUp() override
-    {
-        RefPtr<FakeContextEvictionManager> contextEvictionManager = adoptRef(new FakeContextEvictionManager());
-        OwnPtr<WebGraphicsContext3DForTests> context = adoptPtr(new WebGraphicsContext3DForTests);
-        m_context = context.get();
-        RuntimeEnabledFeatures::setWebGLImageChromiumEnabled(true);
-        m_imageId0 = webContext()->nextImageIdToBeCreated();
-        EXPECT_CALL(*webContext(), bindTexImage2DMock(m_imageId0)).Times(1);
-        m_drawingBuffer = DrawingBufferForTests::create(context.release(),
-            IntSize(initialWidth, initialHeight), DrawingBuffer::Preserve, contextEvictionManager.release());
-        testing::Mock::VerifyAndClearExpectations(webContext());
-    }
-
-    void TearDown() override
-    {
-        RuntimeEnabledFeatures::setWebGLImageChromiumEnabled(false);
-    }
-    WGC3Duint m_imageId0;
-};
-
-TEST_F(DrawingBufferImageChromiumTest, verifyResizingReallocatesImages)
-{
-    WebExternalTextureMailbox mailbox;
-
-    IntSize initialSize(initialWidth, initialHeight);
-    IntSize alternateSize(initialWidth, alternateHeight);
-
-    WGC3Duint m_imageId1 = webContext()->nextImageIdToBeCreated();
-    EXPECT_CALL(*webContext(), bindTexImage2DMock(m_imageId1)).Times(1);
-    // Produce one mailbox at size 100x100.
-    m_drawingBuffer->markContentsChanged();
-    EXPECT_TRUE(m_drawingBuffer->prepareMailbox(&mailbox, 0));
-    EXPECT_EQ(initialSize, webContext()->mostRecentlyProducedSize());
-    EXPECT_TRUE(mailbox.allowOverlay);
-    testing::Mock::VerifyAndClearExpectations(webContext());
-
-    WGC3Duint m_imageId2 = webContext()->nextImageIdToBeCreated();
-    EXPECT_CALL(*webContext(), bindTexImage2DMock(m_imageId2)).Times(1);
-    EXPECT_CALL(*webContext(), destroyImageMock(m_imageId0)).Times(1);
-    EXPECT_CALL(*webContext(), releaseTexImage2DMock(m_imageId0)).Times(1);
-    // Resize to 100x50.
-    m_drawingBuffer->reset(IntSize(initialWidth, alternateHeight));
-    m_drawingBuffer->mailboxReleased(mailbox, false);
-    testing::Mock::VerifyAndClearExpectations(webContext());
-
-    WGC3Duint m_imageId3 = webContext()->nextImageIdToBeCreated();
-    EXPECT_CALL(*webContext(), bindTexImage2DMock(m_imageId3)).Times(1);
-    EXPECT_CALL(*webContext(), destroyImageMock(m_imageId1)).Times(1);
-    EXPECT_CALL(*webContext(), releaseTexImage2DMock(m_imageId1)).Times(1);
-    // Produce a mailbox at this size.
-    m_drawingBuffer->markContentsChanged();
-    EXPECT_TRUE(m_drawingBuffer->prepareMailbox(&mailbox, 0));
-    EXPECT_EQ(alternateSize, webContext()->mostRecentlyProducedSize());
-    EXPECT_TRUE(mailbox.allowOverlay);
-    testing::Mock::VerifyAndClearExpectations(webContext());
-
-    WGC3Duint m_imageId4 = webContext()->nextImageIdToBeCreated();
-    EXPECT_CALL(*webContext(), bindTexImage2DMock(m_imageId4)).Times(1);
-    EXPECT_CALL(*webContext(), destroyImageMock(m_imageId2)).Times(1);
-    EXPECT_CALL(*webContext(), releaseTexImage2DMock(m_imageId2)).Times(1);
-    // Reset to initial size.
-    m_drawingBuffer->reset(IntSize(initialWidth, initialHeight));
-    m_drawingBuffer->mailboxReleased(mailbox, false);
-    testing::Mock::VerifyAndClearExpectations(webContext());
-
-    WGC3Duint m_imageId5 = webContext()->nextImageIdToBeCreated();
-    EXPECT_CALL(*webContext(), bindTexImage2DMock(m_imageId5)).Times(1);
-    EXPECT_CALL(*webContext(), destroyImageMock(m_imageId3)).Times(1);
-    EXPECT_CALL(*webContext(), releaseTexImage2DMock(m_imageId3)).Times(1);
-    // Prepare another mailbox and verify that it's the correct size.
-    m_drawingBuffer->markContentsChanged();
-    EXPECT_TRUE(m_drawingBuffer->prepareMailbox(&mailbox, 0));
-    EXPECT_EQ(initialSize, webContext()->mostRecentlyProducedSize());
-    EXPECT_TRUE(mailbox.allowOverlay);
-    testing::Mock::VerifyAndClearExpectations(webContext());
-
-    // Prepare one final mailbox and verify that it's the correct size.
-    m_drawingBuffer->mailboxReleased(mailbox, false);
-    m_drawingBuffer->markContentsChanged();
-    EXPECT_TRUE(m_drawingBuffer->prepareMailbox(&mailbox, 0));
-    EXPECT_EQ(initialSize, webContext()->mostRecentlyProducedSize());
-    EXPECT_TRUE(mailbox.allowOverlay);
-    m_drawingBuffer->mailboxReleased(mailbox, false);
-
-    EXPECT_CALL(*webContext(), destroyImageMock(m_imageId5)).Times(1);
-    EXPECT_CALL(*webContext(), releaseTexImage2DMock(m_imageId5)).Times(1);
-    EXPECT_CALL(*webContext(), destroyImageMock(m_imageId4)).Times(1);
-    EXPECT_CALL(*webContext(), releaseTexImage2DMock(m_imageId4)).Times(1);
-    m_drawingBuffer->beginDestruction();
-    testing::Mock::VerifyAndClearExpectations(webContext());
-}
-
-class DepthStencilTrackingContext : public MockWebGraphicsContext3D {
-public:
-    DepthStencilTrackingContext()
-        : m_nextRenderBufferId(1)
-        , m_stencilAttachment(0)
-        , m_depthAttachment(0) { }
-    virtual ~DepthStencilTrackingContext() { }
-
-    int numAllocatedRenderBuffer() const { return m_nextRenderBufferId - 1; }
-    WebGLId stencilAttachment() const { return m_stencilAttachment; }
-    WebGLId depthAttachment() const { return m_depthAttachment; }
-
-    virtual WebString getString(WGC3Denum type) override
-    {
-        if (type == GL_EXTENSIONS) {
-            return WebString::fromUTF8("GL_OES_packed_depth_stencil");
-        }
-        return WebString();
-    }
-
-    virtual WebGLId createRenderbuffer() override
-    {
-        return ++m_nextRenderBufferId;
-    }
-
-    virtual void framebufferRenderbuffer(WGC3Denum target, WGC3Denum attachment, WGC3Denum renderbuffertarget, WebGLId renderbuffer) override
-    {
-        if (attachment == GL_STENCIL_ATTACHMENT) {
-            m_stencilAttachment = renderbuffer;
-        } else {
-            m_depthAttachment = renderbuffer;
-        }
-    }
-
-    virtual void getIntegerv(WGC3Denum ptype, WGC3Dint* value) override
-    {
-        switch (ptype) {
-        case GL_DEPTH_BITS:
-            *value = m_depthAttachment ? 24 : 0;
-            return;
-        case GL_STENCIL_BITS:
-            *value = m_stencilAttachment ? 8 : 0;
-            return;
-        }
-        MockWebGraphicsContext3D::getIntegerv(ptype, value);
-    }
-
-private:
-    WebGLId m_nextRenderBufferId;
-    WebGLId m_stencilAttachment;
-    WebGLId m_depthAttachment;
-};
-
-struct DepthStencilTestCase {
-    DepthStencilTestCase(bool requestStencil, bool requestDepth, int expectedRenderBuffers, bool expectDepthStencil, const char* const testCaseName)
-        : requestStencil(requestStencil)
-        , requestDepth(requestDepth)
-        , expectDepthStencil(expectDepthStencil)
-        , expectedRenderBuffers(expectedRenderBuffers)
-        , testCaseName(testCaseName) { }
-
-    bool requestStencil;
-    bool requestDepth;
-    bool expectDepthStencil;
-    int expectedRenderBuffers;
-    const char* const testCaseName;
-};
-
-// This tests that when the packed depth+stencil extension is supported DrawingBuffer always allocates
-// a single packed renderbuffer if either is requested and properly computes the actual context attributes
-// as defined by WebGL. We always allocate a packed buffer in this case since many desktop OpenGL drivers
-// that support this extension do not consider a framebuffer with only a depth or a stencil buffer attached
-// to be complete.
-TEST(DrawingBufferDepthStencilTest, packedDepthStencilSupported)
-{
-    DepthStencilTestCase cases[] = {
-        DepthStencilTestCase(false, false, false, 0, "neither"),
-        DepthStencilTestCase(true, false, true, 1, "stencil only"),
-        DepthStencilTestCase(false, true, true, 1, "depth only"),
-        DepthStencilTestCase(true, true, true, 1, "both"),
-    };
-
-    for (size_t i = 0; i < arraysize(cases); i++) {
-        SCOPED_TRACE(cases[i].testCaseName);
-        OwnPtr<DepthStencilTrackingContext> context = adoptPtr(new DepthStencilTrackingContext);
-        DepthStencilTrackingContext* trackingContext = context.get();
-        DrawingBuffer::PreserveDrawingBuffer preserve = DrawingBuffer::Preserve;
-        RefPtr<ContextEvictionManager> contextEvictionManager = adoptRef(new FakeContextEvictionManager);
-
-        WebGraphicsContext3D::Attributes requestedAttributes;
-        requestedAttributes.stencil = cases[i].requestStencil;
-        requestedAttributes.depth = cases[i].requestDepth;
-        RefPtr<DrawingBuffer> drawingBuffer = DrawingBuffer::create(context.release(), IntSize(10, 10), preserve, requestedAttributes, contextEvictionManager);
-
-        EXPECT_EQ(cases[i].requestDepth, drawingBuffer->getActualAttributes().depth);
-        EXPECT_EQ(cases[i].requestStencil, drawingBuffer->getActualAttributes().stencil);
-        EXPECT_EQ(cases[i].expectedRenderBuffers, trackingContext->numAllocatedRenderBuffer());
-        if (cases[i].expectDepthStencil) {
-            EXPECT_EQ(trackingContext->stencilAttachment(), trackingContext->depthAttachment());
-        } else if (cases[i].requestStencil || cases[i].requestDepth) {
-            EXPECT_NE(trackingContext->stencilAttachment(), trackingContext->depthAttachment());
-        } else {
-            EXPECT_EQ(0u, trackingContext->stencilAttachment());
-            EXPECT_EQ(0u, trackingContext->depthAttachment());
-        }
-
-        drawingBuffer->reset(IntSize(10, 20));
-        EXPECT_EQ(cases[i].requestDepth, drawingBuffer->getActualAttributes().depth);
-        EXPECT_EQ(cases[i].requestStencil, drawingBuffer->getActualAttributes().stencil);
-        EXPECT_EQ(cases[i].expectedRenderBuffers, trackingContext->numAllocatedRenderBuffer());
-        if (cases[i].expectDepthStencil) {
-            EXPECT_EQ(trackingContext->stencilAttachment(), trackingContext->depthAttachment());
-        } else if (cases[i].requestStencil || cases[i].requestDepth) {
-            EXPECT_NE(trackingContext->stencilAttachment(), trackingContext->depthAttachment());
-        } else {
-            EXPECT_EQ(0u, trackingContext->stencilAttachment());
-            EXPECT_EQ(0u, trackingContext->depthAttachment());
-        }
-
-        drawingBuffer->beginDestruction();
-    }
-}
-
-TEST_F(DrawingBufferTest, verifySetIsHiddenProperlyAffectsMailboxes)
-{
-    blink::WebExternalTextureMailbox mailbox;
-
-    // Produce mailboxes.
-    m_drawingBuffer->markContentsChanged();
-    EXPECT_TRUE(m_drawingBuffer->prepareMailbox(&mailbox, 0));
-
-    unsigned waitSyncPoint = webContext()->insertSyncPoint();
-    mailbox.syncPoint = waitSyncPoint;
-    m_drawingBuffer->setIsHidden(true);
-    m_drawingBuffer->mailboxReleased(mailbox);
-    // m_drawingBuffer deletes mailbox immediately when hidden.
-    EXPECT_EQ(waitSyncPoint, webContext()->mostRecentlyWaitedSyncPoint());
-
-    m_drawingBuffer->beginDestruction();
-}
-
-} // namespace