[ABANDONED] Move multipart/x-mixed-replace related code to ImageResource

third_party/WebKit/Source/core/html/ImageDocument.cpp

Index: third_party/WebKit/Source/core/html/ImageDocument.cpp
diff --git a/third_party/WebKit/Source/core/html/ImageDocument.cpp b/third_party/WebKit/Source/core/html/ImageDocument.cpp
index ad9df679eb1a2e5c64e2c1298c0e23b10304a231..f39bea07eed4b0320be02b80620ad0b1f8602bf2 100644
--- a/third_party/WebKit/Source/core/html/ImageDocument.cpp
+++ b/third_party/WebKit/Source/core/html/ImageDocument.cpp
@@ -201,7 +201,7 @@ PassRefPtrWillBeRawPtr<DocumentParser> ImageDocument::createParser()
     return ImageDocumentParser::create(this);
 }
 
-void ImageDocument::createDocumentStructure(bool loadingMultipartContent)
+void ImageDocument::createDocumentStructure()
 {
     RefPtrWillBeRawPtr<HTMLHtmlElement> rootElement = HTMLHtmlElement::create(*this);
     appendChild(rootElement);
@@ -209,13 +209,6 @@ void ImageDocument::createDocumentStructure(bool loadingMultipartContent)
 
     if (frame())
         frame()->loader().dispatchDocumentElementAvailable();
-    // Normally, ImageDocument creates an HTMLImageElement that doesn't actually load
-    // anything, and the ImageDocument routes the main resource data into the HTMLImageElement's
-    // ImageResource. However, the main resource pipeline doesn't know how to handle multipart content.
-    // For multipart content, we instead stop streaming data through the main resource and re-request
-    // the data directly.
-    if (loadingMultipartContent)
-        loader()->stopLoading();
 
     RefPtrWillBeRawPtr<HTMLHeadElement> head = HTMLHeadElement::create(*this);
     RefPtrWillBeRawPtr<HTMLMetaElement> meta = HTMLMetaElement::create(*this);
@@ -231,12 +224,11 @@ void ImageDocument::createDocumentStructure(bool loadingMultipartContent)
 
     m_imageElement = HTMLImageElement::create(*this);
     m_imageElement->setAttribute(styleAttr, "-webkit-user-select: none");
-    // If the image is multipart, we neglect to mention to the HTMLImageElement that it's in an
-    // ImageDocument, so that it requests the image normally.
-    if (!loadingMultipartContent)
-        m_imageElement->setLoadingImageDocument();
+    m_imageElement->setLoadingImageDocument();
     m_imageElement->setSrc(url().string());
     body->appendChild(m_imageElement.get());
+    if (loader())
+        m_imageElement->cachedImage()->responseReceived(loader()->response(), nullptr);
 
     if (shouldShrinkToFit()) {
         // Add event listeners
@@ -249,8 +241,6 @@ void ImageDocument::createDocumentStructure(bool loadingMultipartContent)
 
     rootElement->appendChild(head);
     rootElement->appendChild(body);
-    if (loadingMultipartContent)
-        finishedParsing();
 }
 
 float ImageDocument::scale() const
@@ -415,11 +405,10 @@ void ImageDocument::windowSizeChanged(ScaleType type)
 
 ImageResource* ImageDocument::cachedImage()
 {
-    bool loadingMultipartContent = loader() && loader()->loadingMultipartContent();
     if (!m_imageElement)
-        createDocumentStructure(loadingMultipartContent);
+        createDocumentStructure();
 
-    return loadingMultipartContent ? nullptr : m_imageElement->cachedImage();
+    return m_imageElement->cachedImage();
 }
 
 bool ImageDocument::shouldShrinkToFit() const