Adds WebElement::imageContents()

Source/web/tests/WebFrameTest.cpp

 /*
  * Copyright (C) 2010 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 3448 matching lines @@
     WebViewImpl* webViewImpl = static_cast<WebViewImpl*>(m_webView);
     WebCore::FrameLoadRequest frameRequest(0, WebCore::ResourceRequest(static_cast<WebViewImpl*>(m_webView)->page()->mainFrame()->document()->url()));
     webViewImpl->page()->mainFrame()->loader()->load(frameRequest);
     Platform::current()->unitTestSupport()->serveAsynchronousMockedRequests();
 
     EXPECT_TRUE(client.frameLoadTypeSameSeen());
     m_webView->close();
     m_webView = 0;
 }
 
+TEST_F(WebFrameTest, WebNodeImageContents)
+{
+    m_webView = FrameTestHelpers::createWebViewAndLoad("about:blank", true);
+    WebFrame* frame = m_webView->mainFrame();
+
+    static const char bluePNG[] = "<img src=\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAYAAACNMs+9AAAAGElEQVQYV2NkYPj/n4EIwDiqEF8oUT94AFIQE/cCn90IAAAAAElFTkSuQmCC\">";
+
+    // Load up the image and test that we can extract the contents.
+    WebCore::KURL testURL = toKURL("about:blank");
+    frame->loadHTMLString(bluePNG, testURL);
+    runPendingTasks();
+
+    WebNode node = frame->document().body().firstChild();
+    EXPECT_TRUE(node.isElementNode());
+    WebElement element = node.to<WebElement>();
+    WebImage image = element.imageContents();
+    ASSERT_FALSE(image.isNull());
+    EXPECT_EQ(image.size().width, 10);
+    EXPECT_EQ(image.size().height, 10);
+    SkBitmap bitmap = image.getSkBitmap();
+    SkAutoLockPixels locker(bitmap);
+    EXPECT_EQ(bitmap.getColor(0, 0), SK_ColorBLUE);
+}
 
 } // namespace