Avoid image resource leaks in frame-related unit tests.

third_party/WebKit/Source/web/tests/FrameTestHelpers.cpp

 /*
  * Copyright (C) 2011 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 233 matching lines @@
 {
     reset();
 
     if (!webFrameClient)
         webFrameClient = defaultWebFrameClient();
     if (!webViewClient)
         webViewClient = defaultWebViewClient();
     m_webView = WebViewImpl::create(webViewClient);
     m_webView->settings()->setJavaScriptEnabled(enableJavascript);
     m_webView->settings()->setPluginsEnabled(true);
+    // Enable (mocked) network loads of image URLs, as this simplifies
+    // the completion of resource loads upon test shutdown & helps avoid
+    // dormant loads trigger Resource leaks for image loads.
+    //
+    // Consequently, all external image resources must be mocked.
+    m_webView->settings()->setLoadsImagesAutomatically(true);
     if (updateSettingsFunc)
         updateSettingsFunc(m_webView->settings());
     else
         m_webView->settings()->setDeviceSupportsMouse(false);
     if (m_settingOverrider)
         m_settingOverrider->overrideSettings(m_webView->settings());
 
     m_webView->setDefaultPageScaleLimits(1, 4);
     m_webView->setMainFrame(WebLocalFrameImpl::create(WebTreeScopeType::Document, webFrameClient));
 
@@ skipping 75 matching lines @@
 }
 
 void TestWebViewClient::initializeLayerTreeView()
 {
     m_layerTreeView = adoptPtr(Platform::current()->unitTestSupport()->createLayerTreeViewForTesting());
     ASSERT(m_layerTreeView);
 }
 
 } // namespace FrameTestHelpers
 } // namespace blink