Make empty selection behavior behave like Android EditText.

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

 /*
  * Copyright (C) 2011, 2012 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 1590 matching lines @@
 TEST_F(WebViewTest, LongPressSelection)
 {
     URLTestHelpers::registerMockedURLFromBaseURL(WebString::fromUTF8(m_baseURL.c_str()), WebString::fromUTF8("longpress_selection.html"));
 
     WebView* webView = m_webViewHelper.initializeAndLoad(m_baseURL + "longpress_selection.html", true);
     webView->resize(WebSize(500, 300));
     webView->updateAllLifecyclePhases();
     runPendingTasks();
 
     WebString target = WebString::fromUTF8("target");
+    WebString blanklinestextbox = WebString::fromUTF8("blanklinestextbox");
     WebString onselectstartfalse = WebString::fromUTF8("onselectstartfalse");
     WebLocalFrameImpl* frame = toWebLocalFrameImpl(webView->mainFrame());
 
     EXPECT_TRUE(tapElementById(webView, WebInputEvent::GestureLongPress, onselectstartfalse));
     EXPECT_EQ("", std::string(frame->selectionAsText().utf8().data()));
+    EXPECT_TRUE(tapElementById(webView, WebInputEvent::GestureLongPress, blanklinestextbox));
+    EXPECT_EQ("", std::string(frame->selectionAsText().utf8().data()));
     EXPECT_TRUE(tapElementById(webView, WebInputEvent::GestureLongPress, target));
     EXPECT_EQ("testword", std::string(frame->selectionAsText().utf8().data()));
 }
 
 TEST_F(WebViewTest, BlinkCaretOnTypingAfterLongPress)
 {
     URLTestHelpers::registerMockedURLFromBaseURL(WebString::fromUTF8(m_baseURL.c_str()), WebString::fromUTF8("blink_caret_on_typing_after_long_press.html"));
 
     WebView* webView = m_webViewHelper.initializeAndLoad(m_baseURL + "blink_caret_on_typing_after_long_press.html", true);
     webView->resize(WebSize(640, 480));
@@ skipping 1584 matching lines @@
     result = WebSubstringUtil::attributedSubstringInRange(frame, 5, 5, &baselinePoint);
     ASSERT_TRUE(!!result);
 
     point = WebPoint(baselinePoint.x, frameView->height() - baselinePoint.y);
     result = WebSubstringUtil::attributedWordAtPoint(webView, point, baselinePoint);
     ASSERT_TRUE(!!result);
 }
 #endif
 
 } // namespace blink