Make sure plugin element is focused in PluginDocument.

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

Index: third_party/WebKit/Source/web/tests/WebPluginContainerTest.cpp
diff --git a/third_party/WebKit/Source/web/tests/WebPluginContainerTest.cpp b/third_party/WebKit/Source/web/tests/WebPluginContainerTest.cpp
index d42df5345541324848ec384263889fd9732f45a6..72cad6fb531b043ce985c4ce95aafd19a1a972fb 100644
--- a/third_party/WebKit/Source/web/tests/WebPluginContainerTest.cpp
+++ b/third_party/WebKit/Source/web/tests/WebPluginContainerTest.cpp
@@ -159,6 +159,22 @@ TEST_F(WebPluginContainerTest, WindowToLocalPointTest)
     ASSERT_EQ(10, point4.y);
 }
 
+TEST_F(WebPluginContainerTest, PluginDocumentPluginIsFocused)
+{
+    URLTestHelpers::registerMockedURLFromBaseURL(WebString::fromUTF8(m_baseURL.c_str()), WebString::fromUTF8("test.pdf"), WebString::fromUTF8("application/pdf"));
+
+    TestPluginWebFrameClient pluginWebFrameClient; // Must outlive webViewHelper.
+    FrameTestHelpers::WebViewHelper webViewHelper;
+    WebView* webView = webViewHelper.initializeAndLoad(m_baseURL + "test.pdf", true, &pluginWebFrameClient);
+    ASSERT(webView);
+    webView->layout();
+
+    WebDocument document = webView->mainFrame()->document();
+    EXPECT_TRUE(document.isPluginDocument());
+    WebPluginContainer* pluginContainer = getWebPluginContainer(webView, "plugin");
+    EXPECT_EQ(document.focusedElement(), pluginContainer->element());
+}
+
 TEST_F(WebPluginContainerTest, PrintOnePage)
 {
     URLTestHelpers::registerMockedURLFromBaseURL(WebString::fromUTF8(m_baseURL.c_str()), WebString::fromUTF8("test.pdf"), WebString::fromUTF8("application/pdf"));