Add animation support for WebP images

Source/core/platform/image-decoders/webp/WEBPImageDecoderTest.cpp

 /*
  * 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
@@ skipping 12 matching lines @@
  * 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 "config.h"
 
-#include "core/platform/image-decoders/gif/GIFImageDecoder.h"
+#include "core/platform/image-decoders/webp/WEBPImageDecoder.h"
 
+#include "RuntimeEnabledFeatures.h"
 #include "core/platform/FileSystem.h"
 #include "core/platform/SharedBuffer.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebData.h"
 #include "public/platform/WebSize.h"
 #include "public/platform/WebUnitTestSupport.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/StringHasher.h"
 #include "wtf/Vector.h"
+#include <base/basictypes.h>
 #include <gtest/gtest.h>
 
 using namespace WebCore;
 using namespace WebKit;
 
 namespace {
 
 #if !OS(ANDROID)
 
 static PassRefPtr<SharedBuffer> readFile(const char* fileName)
 {
     String filePath = Platform::current()->unitTestSupport()->webKitRootDir();
     filePath.append(fileName);
 
     long long fileSize;
     if (!getFileSize(filePath, fileSize))
         return 0;
 
     PlatformFileHandle handle = openFile(filePath, OpenForRead);
     int fileLength = static_cast<int>(fileSize);
     Vector<char> buffer(fileLength);
     readFromFile(handle, buffer.data(), fileLength);
     closeFile(handle);
     return SharedBuffer::adoptVector(buffer);
 }
 
-static PassOwnPtr<GIFImageDecoder> createDecoder()
+static PassOwnPtr<WEBPImageDecoder> createDecoder()
 {
-    return adoptPtr(new GIFImageDecoder(ImageSource::AlphaNotPremultiplied, ImageSource::GammaAndColorProfileApplied));
+    return adoptPtr(new WEBPImageDecoder(ImageSource::AlphaNotPremultiplied, ImageSource::GammaAndColorProfileApplied));
 }
 
 static unsigned hashSkBitmap(const SkBitmap& bitmap)
 {
     return StringHasher::hashMemory(bitmap.getPixels(), bitmap.getSize());
 }
 
 static void createDecodingBaseline(SharedBuffer* data, Vector<unsigned>* baselineHashes)
 {
-    OwnPtr<GIFImageDecoder> decoder = createDecoder();
+    OwnPtr<WEBPImageDecoder> decoder = createDecoder();
     decoder->setData(data, true);
     size_t frameCount = decoder->frameCount();
     for (size_t i = 0; i < frameCount; ++i) {
         ImageFrame* frame = decoder->frameBufferAtIndex(i);
         baselineHashes->append(hashSkBitmap(frame->getSkBitmap()));
     }
 }
 
-TEST(GIFImageDecoderTest, decodeTwoFrames)
+void testRandomFrameDecode(const char* webpFile)
 {
-    OwnPtr<GIFImageDecoder> decoder = createDecoder();
+    SCOPED_TRACE(webpFile);
 
-    RefPtr<SharedBuffer> data = readFile("/LayoutTests/fast/images/resources/animated.gif");
+    RefPtr<SharedBuffer> fullData = readFile(webpFile);
+    ASSERT_TRUE(fullData.get());
+    Vector<unsigned> baselineHashes;
+    createDecodingBaseline(fullData.get(), &baselineHashes);
+    size_t frameCount = baselineHashes.size();
+
+    // Random decoding should get the same results as sequential decoding.
+    OwnPtr<WEBPImageDecoder> decoder = createDecoder();
+    decoder->setData(fullData.get(), true);
+    const size_t skippingStep = 5;
+    for (size_t i = 0; i < skippingStep; ++i) {
+        for (size_t j = i; j < frameCount; j += skippingStep) {
+            SCOPED_TRACE(testing::Message() << "Random i:" << i << " j:" << j);
+            ImageFrame* frame = decoder->frameBufferAtIndex(j);
+            EXPECT_EQ(baselineHashes[j], hashSkBitmap(frame->getSkBitmap()));
+        }
+    }
+
+    // Decoding in reverse order.
+    decoder = createDecoder();
+    decoder->setData(fullData.get(), true);
+    for (size_t i = frameCount; i; --i) {
+        SCOPED_TRACE(testing::Message() << "Reverse i:" << i);
+        ImageFrame* frame = decoder->frameBufferAtIndex(i - 1);
+        EXPECT_EQ(baselineHashes[i - 1], hashSkBitmap(frame->getSkBitmap()));
+    }
+}
+
+void testRandomDecodeAfterClearFrameBufferCache(const char* webpFile)
+{
+    SCOPED_TRACE(webpFile);
+
+    RefPtr<SharedBuffer> data = readFile(webpFile);
+    ASSERT_TRUE(data.get());
+    Vector<unsigned> baselineHashes;
+    createDecodingBaseline(data.get(), &baselineHashes);
+    size_t frameCount = baselineHashes.size();
+
+    OwnPtr<WEBPImageDecoder> decoder = createDecoder();
+    decoder->setData(data.get(), true);
+    for (size_t clearExceptFrame = 0; clearExceptFrame < frameCount; ++clearExceptFrame) {
+        decoder->clearCacheExceptFrame(clearExceptFrame);
+        const size_t skippingStep = 5;
+        for (size_t i = 0; i < skippingStep; ++i) {
+            for (size_t j = 0; j < frameCount; j += skippingStep) {
+                SCOPED_TRACE(testing::Message() << "Random i:" << i << " j:" << j);
+                ImageFrame* frame = decoder->frameBufferAtIndex(j);
+                EXPECT_EQ(baselineHashes[j], hashSkBitmap(frame->getSkBitmap()));
+            }
+        }
+    }
+}
+
+class AnimatedWebPTests : public ::testing::Test {
+protected:
+    virtual void SetUp()
+    {
+        // Enable animated WebP for all the tests.
+        WebCore::RuntimeEnabledFeatures::setAnimatedWebPEnabled(true);
+    }
+};
+
+TEST_F(AnimatedWebPTests, verifyAnimationParameters)
+{
+    OwnPtr<WEBPImageDecoder> decoder = createDecoder();
+    EXPECT_EQ(cAnimationLoopOnce, decoder->repetitionCount());
+
+    RefPtr<SharedBuffer> data = readFile("/LayoutTests/fast/images/resources/webp-animated.webp");
     ASSERT_TRUE(data.get());
     decoder->setData(data.get(), true);
-    EXPECT_EQ(cAnimationLoopOnce, decoder->repetitionCount());
 
-    ImageFrame* frame = decoder->frameBufferAtIndex(0);
-    EXPECT_EQ(ImageFrame::FrameComplete, frame->status());
-    EXPECT_EQ(16, frame->getSkBitmap().width());
-    EXPECT_EQ(16, frame->getSkBitmap().height());
+    const int canvasWidth = 11;
+    const int canvasHeight = 29;
+    const int hasAlpha = true;
+    const struct AnimParam {
+        int xOffset, yOffset, width, height;
+        ImageFrame::FrameDisposalMethod dispose;
+        unsigned duration;
+    } animParams[] = {
+        { 0, 0, 11, 29, ImageFrame::DisposeKeep, 1000u },
+        { 2, 10, 7, 17, ImageFrame::DisposeKeep, 500u },
+        { 2, 2, 7, 16, ImageFrame::DisposeKeep, 1000u },
+    };
 
-    frame = decoder->frameBufferAtIndex(1);
-    EXPECT_EQ(ImageFrame::FrameComplete, frame->status());
-    EXPECT_EQ(16, frame->getSkBitmap().width());
-    EXPECT_EQ(16, frame->getSkBitmap().height());
+    for (size_t i = 0; i < ARRAYSIZE_UNSAFE(animParams); ++i) {
+        const ImageFrame* const frame = decoder->frameBufferAtIndex(i);
+        EXPECT_EQ(ImageFrame::FrameComplete, frame->status());
+        EXPECT_EQ(canvasWidth, frame->getSkBitmap().width());
+        EXPECT_EQ(canvasHeight, frame->getSkBitmap().height());
+        EXPECT_EQ(hasAlpha, frame->hasAlpha());
+        EXPECT_EQ(animParams[i].xOffset, frame->originalFrameRect().x());
+        EXPECT_EQ(animParams[i].yOffset, frame->originalFrameRect().y());
+        EXPECT_EQ(animParams[i].width, frame->originalFrameRect().width());
+        EXPECT_EQ(animParams[i].height, frame->originalFrameRect().height());
+        EXPECT_EQ(animParams[i].dispose, frame->disposalMethod());
+        EXPECT_EQ(animParams[i].duration, frame->duration());
+    }
 
-    EXPECT_EQ(2u, decoder->frameCount());
+    EXPECT_EQ(ARRAYSIZE_UNSAFE(animParams), decoder->frameCount());
     EXPECT_EQ(cAnimationLoopInfinite, decoder->repetitionCount());
 }
 
-TEST(GIFImageDecoderTest, parseAndDecode)
+TEST_F(AnimatedWebPTests, parseAndDecodeByteByByte)
 {
-    OwnPtr<GIFImageDecoder> decoder = createDecoder();
+    const struct TestImage {
+        const char* filename;
+        unsigned frameCount;
+        int repetitionCount;
+    } testImages[] = {
+        { "/LayoutTests/fast/images/resources/webp-animated.webp", 3u, cAnimationLoopInfinite },
+        { "/LayoutTests/fast/images/resources/webp-animated-icc-xmp.webp", 13u, 32000 },
+    };
 
-    RefPtr<SharedBuffer> data = readFile("/LayoutTests/fast/images/resources/animated.gif");
-    ASSERT_TRUE(data.get());
-    decoder->setData(data.get(), true);
-    EXPECT_EQ(cAnimationLoopOnce, decoder->repetitionCount());
+    for (size_t i = 0; i < ARRAYSIZE_UNSAFE(testImages); ++i) {
+        OwnPtr<WEBPImageDecoder> decoder = createDecoder();
+        RefPtr<SharedBuffer> data = readFile(testImages[i].filename);
+        ASSERT_TRUE(data.get());
 
-    // This call will parse the entire file.
-    EXPECT_EQ(2u, decoder->frameCount());
+        size_t frameCount = 0;
+        size_t framesDecoded = 0;
 
-    ImageFrame* frame = decoder->frameBufferAtIndex(0);
-    EXPECT_EQ(ImageFrame::FrameComplete, frame->status());
-    EXPECT_EQ(16, frame->getSkBitmap().width());
-    EXPECT_EQ(16, frame->getSkBitmap().height());
+        // Pass data to decoder byte by byte.
+        for (size_t length = 1; length <= data->size(); ++length) {
+            RefPtr<SharedBuffer> tempData = SharedBuffer::create(data->data(), length);
+            decoder->setData(tempData.get(), length == data->size());
 
-    frame = decoder->frameBufferAtIndex(1);
-    EXPECT_EQ(ImageFrame::FrameComplete, frame->status());
-    EXPECT_EQ(16, frame->getSkBitmap().width());
-    EXPECT_EQ(16, frame->getSkBitmap().height());
-    EXPECT_EQ(cAnimationLoopInfinite, decoder->repetitionCount());
+            EXPECT_LE(frameCount, decoder->frameCount());
+            frameCount = decoder->frameCount();
+
+            ImageFrame* frame = decoder->frameBufferAtIndex(frameCount - 1);
+            if (frame && frame->status() == ImageFrame::FrameComplete && framesDecoded < frameCount)
+                ++framesDecoded;
+        }
+
+        EXPECT_EQ(testImages[i].frameCount, decoder->frameCount());
+        EXPECT_EQ(testImages[i].frameCount, framesDecoded);
+        EXPECT_EQ(testImages[i].repetitionCount, decoder->repetitionCount());
+    }
 }
 
-TEST(GIFImageDecoderTest, parseByteByByte)
+TEST_F(AnimatedWebPTests, invalidImage)
 {
-    OwnPtr<GIFImageDecoder> decoder = createDecoder();
+    OwnPtr<WEBPImageDecoder> decoder = createDecoder();
 
-    RefPtr<SharedBuffer> data = readFile("/LayoutTests/fast/images/resources/animated.gif");
-    ASSERT_TRUE(data.get());
-
-    size_t frameCount = 0;
-
-    // Pass data to decoder byte by byte.
-    for (size_t length = 1; length <= data->size(); ++length) {
-        RefPtr<SharedBuffer> tempData = SharedBuffer::create(data->data(), length);
-        decoder->setData(tempData.get(), length == data->size());
-
-        EXPECT_LE(frameCount, decoder->frameCount());
-        frameCount = decoder->frameCount();
-    }
-
-    EXPECT_EQ(2u, decoder->frameCount());
-
-    decoder->frameBufferAtIndex(0);
-    decoder->frameBufferAtIndex(1);
-    EXPECT_EQ(cAnimationLoopInfinite, decoder->repetitionCount());
-}
-
-TEST(GIFImageDecoderTest, parseAndDecodeByteByByte)
-{
-    OwnPtr<GIFImageDecoder> decoder = createDecoder();
-
-    RefPtr<SharedBuffer> data = readFile("/LayoutTests/fast/images/resources/animated-gif-with-offsets.gif");
-    ASSERT_TRUE(data.get());
-
-    size_t frameCount = 0;
-    size_t framesDecoded = 0;
-
-    // Pass data to decoder byte by byte.
-    for (size_t length = 1; length <= data->size(); ++length) {
-        RefPtr<SharedBuffer> tempData = SharedBuffer::create(data->data(), length);
-        decoder->setData(tempData.get(), length == data->size());
-
-        EXPECT_LE(frameCount, decoder->frameCount());
-        frameCount = decoder->frameCount();
-
-        ImageFrame* frame = decoder->frameBufferAtIndex(frameCount - 1);
-        if (frame && frame->status() == ImageFrame::FrameComplete && framesDecoded < frameCount)
-            ++framesDecoded;
-    }
-
-    EXPECT_EQ(5u, decoder->frameCount());
-    EXPECT_EQ(5u, framesDecoded);
-    EXPECT_EQ(cAnimationLoopInfinite, decoder->repetitionCount());
-}
-
-TEST(GIFImageDecoderTest, brokenSecondFrame)
-{
-    OwnPtr<GIFImageDecoder> decoder = createDecoder();
-
-    RefPtr<SharedBuffer> data = readFile("/Source/WebKit/chromium/tests/data/broken.gif");
+    RefPtr<SharedBuffer> data = readFile("/LayoutTests/fast/images/resources/invalid-animated-webp.webp");
     ASSERT_TRUE(data.get());
     decoder->setData(data.get(), true);
 
-    // One frame is detected but cannot be decoded.
-    EXPECT_EQ(1u, decoder->frameCount());
-    ImageFrame* frame = decoder->frameBufferAtIndex(1);
+    EXPECT_EQ(0u, decoder->frameCount());
+    ImageFrame* frame = decoder->frameBufferAtIndex(0);
     EXPECT_FALSE(frame);
+    EXPECT_EQ(cAnimationLoopOnce, decoder->repetitionCount());
 }
 
-TEST(GIFImageDecoderTest, progressiveDecode)
+TEST_F(AnimatedWebPTests, progressiveDecode)
 {
-    RefPtr<SharedBuffer> fullData = readFile("/Source/WebKit/chromium/tests/data/radient.gif");
+    RefPtr<SharedBuffer> fullData = readFile("/LayoutTests/fast/images/resources/webp-animated.webp");
     ASSERT_TRUE(fullData.get());
     const size_t fullLength = fullData->size();
 
-    OwnPtr<GIFImageDecoder> decoder;
+    OwnPtr<WEBPImageDecoder>  decoder;
     ImageFrame* frame;
 
     Vector<unsigned> truncatedHashes;
     Vector<unsigned> progressiveHashes;
 
     // Compute hashes when the file is truncated.
     const size_t increment = 1;
     for (size_t i = 1; i <= fullLength; i += increment) {
         decoder = createDecoder();
         RefPtr<SharedBuffer> data = SharedBuffer::create(fullData->data(), i);
@@ skipping 22 matching lines @@
     bool match = true;
     for (size_t i = 0; i < truncatedHashes.size(); ++i) {
         if (truncatedHashes[i] != progressiveHashes[i]) {
             match = false;
             break;
         }
     }
     EXPECT_TRUE(match);
 }
 
-TEST(GIFImageDecoderTest, allDataReceivedTruncation)
+TEST_F(AnimatedWebPTests, frameIsCompleteAndDuration)
 {
-    OwnPtr<GIFImageDecoder> decoder = createDecoder();
+    OwnPtr<WEBPImageDecoder> decoder = createDecoder();
 
-    RefPtr<SharedBuffer> data = readFile("/LayoutTests/fast/images/resources/animated.gif");
+    RefPtr<SharedBuffer> data = readFile("/LayoutTests/fast/images/resources/webp-animated.webp");
     ASSERT_TRUE(data.get());
 
     ASSERT_GE(data->size(), 10u);
-    RefPtr<SharedBuffer> tempData = SharedBuffer::create(data->data(), data->size() - 10);
-    decoder->setData(tempData.get(), true);
-
-    EXPECT_EQ(2u, decoder->frameCount());
-    EXPECT_FALSE(decoder->failed());
-
-    decoder->frameBufferAtIndex(0);
-    EXPECT_FALSE(decoder->failed());
-    decoder->frameBufferAtIndex(1);
-    EXPECT_TRUE(decoder->failed());
-}
-
-TEST(GIFImageDecoderTest, frameIsComplete)
-{
-    OwnPtr<GIFImageDecoder> decoder = createDecoder();
-
-    RefPtr<SharedBuffer> data = readFile("/LayoutTests/fast/images/resources/animated.gif");
-    ASSERT_TRUE(data.get());
-    decoder->setData(data.get(), true);
-
-    EXPECT_EQ(2u, decoder->frameCount());
-    EXPECT_FALSE(decoder->failed());
-    EXPECT_TRUE(decoder->frameIsCompleteAtIndex(0));
-    EXPECT_TRUE(decoder->frameIsCompleteAtIndex(1));
-}
-
-TEST(GIFImageDecoderTest, frameIsCompleteLoading)
-{
-    OwnPtr<GIFImageDecoder> decoder = createDecoder();
-
-    RefPtr<SharedBuffer> data = readFile("/LayoutTests/fast/images/resources/animated.gif");
-    ASSERT_TRUE(data.get());
-
-    ASSERT_GE(data->size(), 10u);
     RefPtr<SharedBuffer> tempData = SharedBuffer::create(data->data(), data->size() - 10);
     decoder->setData(tempData.get(), false);
 
     EXPECT_EQ(2u, decoder->frameCount());
     EXPECT_FALSE(decoder->failed());
     EXPECT_TRUE(decoder->frameIsCompleteAtIndex(0));
-    EXPECT_FALSE(decoder->frameIsCompleteAtIndex(1));
+    EXPECT_EQ(1000, decoder->frameDurationAtIndex(0));
+    EXPECT_TRUE(decoder->frameIsCompleteAtIndex(1));
+    EXPECT_EQ(500, decoder->frameDurationAtIndex(1));
 
     decoder->setData(data.get(), true);
-    EXPECT_EQ(2u, decoder->frameCount());
+    EXPECT_EQ(3u, decoder->frameCount());
     EXPECT_TRUE(decoder->frameIsCompleteAtIndex(0));
+    EXPECT_EQ(1000, decoder->frameDurationAtIndex(0));
     EXPECT_TRUE(decoder->frameIsCompleteAtIndex(1));
+    EXPECT_EQ(500, decoder->frameDurationAtIndex(1));
+    EXPECT_TRUE(decoder->frameIsCompleteAtIndex(2));
+    EXPECT_EQ(1000.0, decoder->frameDurationAtIndex(2));
 }
 
-TEST(GIFImageDecoderTest, badTerminator)
+TEST_F(AnimatedWebPTests, updateRequiredPreviousFrameAfterFirstDecode)
 {
-    RefPtr<SharedBuffer> referenceData = readFile("/Source/WebKit/chromium/tests/data/radient.gif");
-    RefPtr<SharedBuffer> testData = readFile("/Source/WebKit/chromium/tests/data/radient-bad-terminator.gif");
-    ASSERT_TRUE(referenceData.get());
-    ASSERT_TRUE(testData.get());
+    OwnPtr<WEBPImageDecoder> decoder = createDecoder();
 
-    OwnPtr<GIFImageDecoder> referenceDecoder(createDecoder());
-    referenceDecoder->setData(referenceData.get(), true);
-    EXPECT_EQ(1u, referenceDecoder->frameCount());
-    ImageFrame* referenceFrame = referenceDecoder->frameBufferAtIndex(0);
-    ASSERT(referenceFrame);
-
-    OwnPtr<GIFImageDecoder> testDecoder(createDecoder());
-    testDecoder->setData(testData.get(), true);
-    EXPECT_EQ(1u, testDecoder->frameCount());
-    ImageFrame* testFrame = testDecoder->frameBufferAtIndex(0);
-    ASSERT(testFrame);
-
-    EXPECT_EQ(hashSkBitmap(referenceFrame->getSkBitmap()), hashSkBitmap(testFrame->getSkBitmap()));
-}
-
-TEST(GIFImageDecoderTest, updateRequiredPreviousFrameAfterFirstDecode)
-{
-    OwnPtr<GIFImageDecoder> decoder = createDecoder();
-
-    RefPtr<SharedBuffer> fullData = readFile("/LayoutTests/fast/images/resources/animated-10color.gif");
+    RefPtr<SharedBuffer> fullData = readFile("/LayoutTests/fast/images/resources/webp-animated.webp");
     ASSERT_TRUE(fullData.get());
 
     // Give it data that is enough to parse but not decode in order to check the status
     // of requiredPreviousFrameIndex before decoding.
     size_t partialSize = 1;
     do {
         RefPtr<SharedBuffer> data = SharedBuffer::create(fullData->data(), partialSize);
         decoder->setData(data.get(), false);
         ++partialSize;
     } while (!decoder->frameCount() || decoder->frameBufferAtIndex(0)->status() == ImageFrame::FrameEmpty);
 
     EXPECT_EQ(notFound, decoder->frameBufferAtIndex(0)->requiredPreviousFrameIndex());
     unsigned frameCount = decoder->frameCount();
     for (size_t i = 1; i < frameCount; ++i)
         EXPECT_EQ(i - 1, decoder->frameBufferAtIndex(i)->requiredPreviousFrameIndex());
 
     decoder->setData(fullData.get(), true);
     for (size_t i = 0; i < frameCount; ++i)
         EXPECT_EQ(notFound, decoder->frameBufferAtIndex(i)->requiredPreviousFrameIndex());
 }
 
-void testRandomFrameDecode(const char* gifFile)
+TEST_F(AnimatedWebPTests, randomFrameDecode)
 {
-    SCOPED_TRACE(gifFile);
+    testRandomFrameDecode("/LayoutTests/fast/images/resources/webp-animated.webp");
+    testRandomFrameDecode("/LayoutTests/fast/images/resources/webp-animated-large.webp");
+    testRandomFrameDecode("/LayoutTests/fast/images/resources/webp-animated-icc-xmp.webp");
+}
 
-    RefPtr<SharedBuffer> fullData = readFile(gifFile);
+TEST_F(AnimatedWebPTests, randomDecodeAfterClearFrameBufferCache)
+{
+    testRandomDecodeAfterClearFrameBufferCache("/LayoutTests/fast/images/resources/webp-animated.webp");
+    testRandomDecodeAfterClearFrameBufferCache("/LayoutTests/fast/images/resources/webp-animated-large.webp");
+    testRandomDecodeAfterClearFrameBufferCache("/LayoutTests/fast/images/resources/webp-animated-icc-xmp.webp");
+}
+
+TEST_F(AnimatedWebPTests, resumePartialDecodeAfterClearFrameBufferCache)
+{
+    RefPtr<SharedBuffer> fullData = readFile("/LayoutTests/fast/images/resources/webp-animated-large.webp");
     ASSERT_TRUE(fullData.get());
     Vector<unsigned> baselineHashes;
     createDecodingBaseline(fullData.get(), &baselineHashes);
     size_t frameCount = baselineHashes.size();
 
-    // Random decoding should get the same results as sequential decoding.
-    OwnPtr<GIFImageDecoder> decoder = createDecoder();
-    decoder->setData(fullData.get(), true);
-    const size_t skippingStep = 5;
-    for (size_t i = 0; i < skippingStep; ++i) {
-        for (size_t j = i; j < frameCount; j += skippingStep) {
-            SCOPED_TRACE(testing::Message() << "Random i:" << i << " j:" << j);
-            ImageFrame* frame = decoder->frameBufferAtIndex(j);
-            EXPECT_EQ(baselineHashes[j], hashSkBitmap(frame->getSkBitmap()));
-        }
-    }
-
-    // Decoding in reverse order.
-    decoder = createDecoder();
-    decoder->setData(fullData.get(), true);
-    for (size_t i = frameCount; i; --i) {
-        SCOPED_TRACE(testing::Message() << "Reverse i:" << i);
-        ImageFrame* frame = decoder->frameBufferAtIndex(i - 1);
-        EXPECT_EQ(baselineHashes[i - 1], hashSkBitmap(frame->getSkBitmap()));
-    }
-}
-
-TEST(GIFImageDecoderTest, randomFrameDecode)
-{
-    // Single frame image.
-    testRandomFrameDecode("/Source/WebKit/chromium/tests/data/radient.gif");
-    // Multiple frame image.
-    testRandomFrameDecode("/LayoutTests/fast/images/resources/animated-gif-with-offsets.gif");
-    testRandomFrameDecode("/LayoutTests/fast/images/resources/animated-10color.gif");
-}
-
-void testRandomDecodeAfterClearFrameBufferCache(const char* gifFile)
-{
-    SCOPED_TRACE(gifFile);
-
-    RefPtr<SharedBuffer> data = readFile(gifFile);
-    ASSERT_TRUE(data.get());
-    Vector<unsigned> baselineHashes;
-    createDecodingBaseline(data.get(), &baselineHashes);
-    size_t frameCount = baselineHashes.size();
-
-    OwnPtr<GIFImageDecoder> decoder = createDecoder();
-    for (size_t clearExceptFrame = 0; clearExceptFrame < frameCount; ++clearExceptFrame) {
-        decoder->clearCacheExceptFrame(clearExceptFrame);
-        const size_t skippingStep = 5;
-        for (size_t i = 0; i < skippingStep; ++i) {
-            for (size_t j = 0; j < frameCount; j += skippingStep) {
-                SCOPED_TRACE(testing::Message() << "Random i:" << i << " j:" << j);
-                ImageFrame* frame = decoder->frameBufferAtIndex(j);
-                EXPECT_EQ(baselineHashes[j], hashSkBitmap(frame->getSkBitmap()));
-            }
-        }
-    }
-}
-
-TEST(GIFImageDecoderTest, randomDecodeAfterClearFrameBufferCache)
-{
-    // Single frame image.
-    testRandomFrameDecode("/Source/WebKit/chromium/tests/data/radient.gif");
-    // Multiple frame image.
-    testRandomFrameDecode("/LayoutTests/fast/images/resources/animated-gif-with-offsets.gif");
-    testRandomFrameDecode("/LayoutTests/fast/images/resources/animated-10color.gif");
-}
-
-TEST(GIFImageDecoderTest, resumePartialDecodeAfterClearFrameBufferCache)
-{
-    RefPtr<SharedBuffer> fullData = readFile("/LayoutTests/fast/images/resources/animated-10color.gif");
-    ASSERT_TRUE(fullData.get());
-    Vector<unsigned> baselineHashes;
-    createDecodingBaseline(fullData.get(), &baselineHashes);
-    size_t frameCount = baselineHashes.size();
-
-    OwnPtr<GIFImageDecoder> decoder = createDecoder();
+    OwnPtr<WEBPImageDecoder> decoder = createDecoder();
 
     // Let frame 0 be partially decoded.
     size_t partialSize = 1;
     do {
         RefPtr<SharedBuffer> data = SharedBuffer::create(fullData->data(), partialSize);
         decoder->setData(data.get(), false);
         ++partialSize;
     } while (!decoder->frameCount() || decoder->frameBufferAtIndex(0)->status() == ImageFrame::FrameEmpty);
 
     // Skip to the last frame and clear.
     decoder->setData(fullData.get(), true);
     EXPECT_EQ(frameCount, decoder->frameCount());
     ImageFrame* lastFrame = decoder->frameBufferAtIndex(frameCount - 1);
     EXPECT_EQ(baselineHashes[frameCount - 1], hashSkBitmap(lastFrame->getSkBitmap()));
     decoder->clearCacheExceptFrame(notFound);
 
     // Resume decoding of the first frame.
     ImageFrame* firstFrame = decoder->frameBufferAtIndex(0);
     EXPECT_EQ(ImageFrame::FrameComplete, firstFrame->status());
     EXPECT_EQ(baselineHashes[0], hashSkBitmap(firstFrame->getSkBitmap()));
 }
 
 #endif
 
 } // namespace