Make plugin elements return false from canStartSelection.

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

Index: third_party/WebKit/Source/web/tests/WebViewTest.cpp
diff --git a/third_party/WebKit/Source/web/tests/WebViewTest.cpp b/third_party/WebKit/Source/web/tests/WebViewTest.cpp
index 905d7365cc9cec5397c4eedc2e66a98e6d0254fb..bd5d857378eebe3fc270fc1241d2d70d9113bfe8 100644
--- a/third_party/WebKit/Source/web/tests/WebViewTest.cpp
+++ b/third_party/WebKit/Source/web/tests/WebViewTest.cpp
@@ -1651,6 +1651,26 @@ TEST_F(WebViewTest, LongPressEmptyDivAlwaysShow)
     EXPECT_EQ(WebInputEventResult::HandledSystem, webView->handleInputEvent(event));
 }
 
+TEST_F(WebViewTest, LongPressPlugin)
+{
+    URLTestHelpers::registerMockedURLFromBaseURL(WebString::fromUTF8(m_baseURL.c_str()),
+        WebString::fromUTF8("long_press_embed.html"));
+
+    WebViewImpl* webView = m_webViewHelper.initializeAndLoad(m_baseURL + "long_press_embed.html", true);
+    webView->settingsImpl()->setAlwaysShowContextMenuOnTouch(true);
+    webView->resize(WebSize(500, 300));
+    webView->updateAllLifecyclePhases();
+    runPendingTasks();
+
+    WebGestureEvent event;
+    event.type = WebInputEvent::GestureLongPress;
+    event.sourceDevice = WebGestureDeviceTouchscreen;
+    event.x = 100;
+    event.y = 100;
+
+    EXPECT_NE(WebInputEventResult::HandledSystem, webView->handleInputEvent(event));
+}
+
 TEST_F(WebViewTest, LongPressImage)
 {
     URLTestHelpers::registerMockedURLFromBaseURL(WebString::fromUTF8(m_baseURL.c_str()),