Post a microtask to load <img> elements.

Source/core/loader/ImageLoader.cpp

Index: Source/core/loader/ImageLoader.cpp
diff --git a/Source/core/loader/ImageLoader.cpp b/Source/core/loader/ImageLoader.cpp
index f177dd996f833c9b8ce095731bff8715c335309c..e18333b930c7e7d03f9670adeb637e1bfc993ea1 100644
--- a/Source/core/loader/ImageLoader.cpp
+++ b/Source/core/loader/ImageLoader.cpp
@@ -28,6 +28,7 @@
 #include "core/events/EventSender.h"
 #include "core/fetch/CrossOriginAccessControl.h"
 #include "core/fetch/FetchRequest.h"
+#include "core/fetch/MemoryCache.h"
 #include "core/fetch/ResourceFetcher.h"
 #include "core/html/HTMLObjectElement.h"
 #include "core/html/parser/HTMLParserIdioms.h"
@@ -223,6 +224,24 @@ void ImageLoader::updateFromElementIgnoringPreviousError()
     updateFromElement();
 }
 
+bool ImageLoader::shouldLoadImmediately() const
+{
+    if (m_loadManually)
+        return true;
+
+    AtomicString attr = m_element->imageSourceURL();
+    if (attr.isNull() || stripLeadingAndTrailingHTMLSpaces(attr).isEmpty()) {
+        return true;
+    }
+
+    KURL url = m_element->document().completeURL(sourceURI(attr));
+    if (url.protocolIsData())
+        return true;

[abarth-chromium, 2014/04/01 23:57:14]

Why are data URLs special?

+    if (memoryCache()->resourceForURL(url))
+        return true;
+    return false;
+}
+
 void ImageLoader::notifyFinished(Resource* resource)
 {
     ASSERT(m_failedLoadURL.isEmpty());