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

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

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "web/TextFinder.h"
 
 #include "bindings/core/v8/ExceptionStatePlaceholder.h"
 #include "core/dom/Document.h"
 #include "core/dom/NodeList.h"
 #include "core/dom/Range.h"
@@ skipping 415 matching lines @@
         WebUnitTestSupport* unitTestSupport() override { return ensureFallback().unitTestSupport(); }
         WebString defaultLocale() override { return ensureFallback().defaultLocale(); }
         WebCompositorSupport* compositorSupport() override { return ensureFallback().compositorSupport(); }
 
         double m_timeCounter;
     };
 
     TimeProxyPlatform m_proxyTimePlatform;
 };
 
+TEST_F(TextFinderTest, WhitespaceMatches)
+{
+    document().body()->setInnerHTML("<span>Some text </span> <input type='button' value='Button text'/><span>Some more text</span>", ASSERT_NO_EXCEPTION);
+
+    int identifier = 0;
+    WebString searchText(String(" "));
+    WebFindOptions findOptions; // Default.
+
+    textFinder().resetMatchCount();
+    textFinder().scopeStringMatches(identifier, searchText, findOptions, true);
+    while (textFinder().scopingInProgress())
+        runPendingTasks();
+
+    EXPECT_EQ(5, textFinder().totalMatchCount());
+}
+
 TEST_F(TextFinderFakeTimerTest, ScopeWithTimeouts)
 {
     // Make a long string.
     String text(Vector<UChar>(100));
     text.fill('a');
     String searchPattern("abc");
     // Make 4 substrings "abc" in text.
     text.insert(searchPattern, 1);
     text.insert(searchPattern, 10);
     text.insert(searchPattern, 50);
     text.insert(searchPattern, 90);
 
     document().body()->setInnerHTML(text, ASSERT_NO_EXCEPTION);
 
     int identifier = 0;
     WebFindOptions findOptions; // Default.
 
     textFinder().resetMatchCount();
 
     // There will be only one iteration before timeout, because increment
     // of the TimeProxyPlatform timer is greater than timeout threshold.
     textFinder().scopeStringMatches(identifier, searchPattern, findOptions, true);
     while (textFinder().scopingInProgress())
         runPendingTasks();
 
     EXPECT_EQ(4, textFinder().totalMatchCount());
 }
 
 } // namespace blink