Refactoring: Remove dead code in DeferredImageDecoder::createFrameAtIndex

third_party/WebKit/Source/platform/graphics/DeferredImageDecoder.cpp

Index: third_party/WebKit/Source/platform/graphics/DeferredImageDecoder.cpp
diff --git a/third_party/WebKit/Source/platform/graphics/DeferredImageDecoder.cpp b/third_party/WebKit/Source/platform/graphics/DeferredImageDecoder.cpp
index df4b86994d13c1d7ef177299c069132d5ffbdb52..99c59dc89c15204fc7fcc79767af0332b85422c5 100644
--- a/third_party/WebKit/Source/platform/graphics/DeferredImageDecoder.cpp
+++ b/third_party/WebKit/Source/platform/graphics/DeferredImageDecoder.cpp
@@ -98,26 +98,16 @@ PassRefPtr<SkImage> DeferredImageDecoder::createFrameAtIndex(size_t index)
 
     prepareLazyDecodedFrames();
 
-    if (index < m_frameData.size()) {
-        DeferredFrameData* frameData = &m_frameData[index];
-        if (m_actualDecoder)
-            frameData->m_frameBytes = m_actualDecoder->frameBytesAtIndex(index);
-        else
-            frameData->m_frameBytes = m_size.area() * sizeof(ImageFrame::PixelData);
-        // ImageFrameGenerator has the latest known alpha state. There will be a
-        // performance boost if this frame is opaque.
-        DCHECK(m_frameGenerator);
-        return createFrameImageAtIndex(index, !m_frameGenerator->hasAlpha(index));
-    }
-
-    if (!m_actualDecoder || m_actualDecoder->failed())
-        return nullptr;
-
-    ImageFrame* frame = m_actualDecoder->frameBufferAtIndex(index);
-    if (!frame || frame->getStatus() == ImageFrame::FrameEmpty)
-        return nullptr;
-
-    return fromSkSp(SkImage::MakeFromBitmap(frame->bitmap()));
+    DCHECK(index < m_frameData.size());
+    DeferredFrameData* frameData = &m_frameData[index];
+    if (m_actualDecoder)
+        frameData->m_frameBytes = m_actualDecoder->frameBytesAtIndex(index);
+    else
+        frameData->m_frameBytes = m_size.area() * sizeof(ImageFrame::PixelData);
+    // ImageFrameGenerator has the latest known alpha state. There will be a
+    // performance boost if this frame is opaque.
+    DCHECK(m_frameGenerator);
+    return createFrameImageAtIndex(index, !m_frameGenerator->hasAlpha(index));
 }
 
 PassRefPtr<SharedBuffer> DeferredImageDecoder::data()