Find In Page doesn't work properly when " " is searched

third_party/WebKit/Source/core/editing/iterators/TextIteratorTest.cpp

 /*
  * Copyright (c) 2013, 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 368 matching lines @@
         "<div id='div' contenteditable='true'>1<img src='foo.png'>3</div>";
     setBodyContent(bodyContent);
     document().view()->updateAllLifecyclePhases();
 
     Node* divNode = document().getElementById("div");
     RefPtrWillBeRawPtr<Range> range = Range::create(document(), divNode, 0, divNode, 3);
 
     EXPECT_EQ(3, TextIterator::rangeLength(range->startPosition(), range->endPosition()));
 }
 
+TEST_F(TextIteratorTest, WhitespaceCollapseForReplacedElements)
+{
+    static const char* bodyContent = "<span>Some text </span> <input type='button' value='Button text'/><span>Some more text</span>";
+    setBodyContent(bodyContent);
+    EXPECT_EQ("[Some text ][][Some more text]", iterate<DOMTree>(TextIteratorCollapseTrailingSpace));
+    EXPECT_EQ("[Some text ][][Button text][Some more text]", iterate<ComposedTree>(TextIteratorCollapseTrailingSpace));
+}
+
 TEST_F(TextIteratorTest, copyTextTo)
 {
     const char* bodyContent = "<a id=host><b id=one>one</b> not appeared <b id=two>two</b></a>";
     const char* shadowContent = "three <content select=#two></content> <content select=#one></content> zero";
     setBodyContent(bodyContent);
     setShadowContent(shadowContent, "host");
     updateLayoutAndStyleForPainting();
 
     Element* host = document().getElementById("host");
     const char* message = "|iter%d| should have emitted '%s'.";
@@ skipping 80 matching lines @@
     EXPECT_EQ('e', iter2.characterAt(2)) << message2;
     iter2.advance();
     EXPECT_EQ(' ', iter2.characterAt(0)) << message2;
     EXPECT_EQ('z', iter2.characterAt(1)) << message2;
     EXPECT_EQ('e', iter2.characterAt(2)) << message2;
     EXPECT_EQ('r', iter2.characterAt(3)) << message2;
     EXPECT_EQ('o', iter2.characterAt(4)) << message2;
 }
 
 } // namespace blink