[Not committed] Make image load completion async and remove EventSender from ImageLoader

third_party/WebKit/Source/web/tests/sim/SimRequest.cpp

Index: third_party/WebKit/Source/web/tests/sim/SimRequest.cpp
diff --git a/third_party/WebKit/Source/web/tests/sim/SimRequest.cpp b/third_party/WebKit/Source/web/tests/sim/SimRequest.cpp
index 31ff3b6c0890c590bcab81c28c13d723b94fef09..07ce0f0ccd665a8689b7a5d63c5b47bdc0a548ac 100644
--- a/third_party/WebKit/Source/web/tests/sim/SimRequest.cpp
+++ b/third_party/WebKit/Source/web/tests/sim/SimRequest.cpp
@@ -4,6 +4,7 @@
 
 #include "web/tests/sim/SimRequest.h"
 
+#include "platform/testing/UnitTestHelpers.h"
 #include "platform/weborigin/KURL.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebURLLoaderClient.h"
@@ -69,6 +70,9 @@ void SimRequest::finish()
         m_client->didFinishLoading(m_loader, 0, m_totalEncodedDataLength);
     }
     reset();
+
+    // Pump the message loop to process the load event.
+    testing::runPendingTasks();
 }
 
 void SimRequest::complete(const String& data)