Introduce TextBuffer as Output Type of copyTextTo() for Text Iterators

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

Index: third_party/WebKit/Source/core/editing/iterators/SimplifiedBackwardsTextIteratorTest.cpp
diff --git a/third_party/WebKit/Source/core/editing/iterators/SimplifiedBackwardsTextIteratorTest.cpp b/third_party/WebKit/Source/core/editing/iterators/SimplifiedBackwardsTextIteratorTest.cpp
index f2fa09cd6f09fcdcf165ed8bdb885944d012dda6..b7fe1f2a1ac57801e611247a123989e111e89567 100644
--- a/third_party/WebKit/Source/core/editing/iterators/SimplifiedBackwardsTextIteratorTest.cpp
+++ b/third_party/WebKit/Source/core/editing/iterators/SimplifiedBackwardsTextIteratorTest.cpp
@@ -18,11 +18,11 @@ template <typename Strategy>
 static String extractString(const Element& element)
 {
     const EphemeralRangeTemplate<Strategy> range = EphemeralRangeTemplate<Strategy>::rangeOfContents(element);
-    Vector<UChar> buffer;
+    BackwardsTextBuffer buffer;
     for (SimplifiedBackwardsTextIteratorAlgorithm<Strategy> it(range.startPosition(), range.endPosition()); !it.atEnd(); it.advance()) {
         it.copyTextTo(buffer);
     }
-    return String(buffer);
+    return String(buffer.data(), buffer.size());
 }
 
 TEST_F(SimplifiedBackwardsTextIteratorTest, SubrangeWithReplacedElements)
@@ -103,42 +103,42 @@ TEST_F(SimplifiedBackwardsTextIteratorTest, copyTextTo)
 
     EphemeralRangeTemplate<EditingStrategy> range1(EphemeralRangeTemplate<EditingStrategy>::rangeOfContents(*host));
     SimplifiedBackwardsTextIteratorAlgorithm<EditingStrategy> backIter1(range1.startPosition(), range1.endPosition());
-    Vector<UChar> output1;
+    BackwardsTextBuffer output1;
     backIter1.copyTextTo(output1, 0, 2);
-    EXPECT_EQ("wo", String(output1)) << String::format(message, 1, "wo").utf8().data();
+    EXPECT_EQ("wo", String(output1.data(), output1.size())) << String::format(message, 1, "wo").utf8().data();
     backIter1.copyTextTo(output1, 2, 1);
-    EXPECT_EQ("two", String(output1)) << String::format(message, 1, "two").utf8().data();
+    EXPECT_EQ("two", String(output1.data(), output1.size())) << String::format(message, 1, "two").utf8().data();
     backIter1.advance();
     backIter1.copyTextTo(output1, 0, 1);
-    EXPECT_EQ("etwo", String(output1)) << String::format(message, 1, "etwo").utf8().data();
+    EXPECT_EQ("etwo", String(output1.data(), output1.size())) << String::format(message, 1, "etwo").utf8().data();
     backIter1.copyTextTo(output1, 1, 2);
-    EXPECT_EQ("onetwo", String(output1)) << String::format(message, 1, "onetwo").utf8().data();
+    EXPECT_EQ("onetwo", String(output1.data(), output1.size())) << String::format(message, 1, "onetwo").utf8().data();
 
     EphemeralRangeTemplate<EditingInComposedTreeStrategy> range2(EphemeralRangeTemplate<EditingInComposedTreeStrategy>::rangeOfContents(*host));
     SimplifiedBackwardsTextIteratorAlgorithm<EditingInComposedTreeStrategy> backIter2(range2.startPosition(), range2.endPosition());
-    Vector<UChar> output2;
+    BackwardsTextBuffer output2;
     backIter2.copyTextTo(output2, 0, 2);
-    EXPECT_EQ("ro", String(output2)) << String::format(message, 2, "ro").utf8().data();
+    EXPECT_EQ("ro", String(output2.data(), output2.size())) << String::format(message, 2, "ro").utf8().data();
     backIter2.copyTextTo(output2, 2, 3);
-    EXPECT_EQ(" zero", String(output2)) << String::format(message, 2, " zero").utf8().data();
+    EXPECT_EQ(" zero", String(output2.data(), output2.size())) << String::format(message, 2, " zero").utf8().data();
     backIter2.advance();
     backIter2.copyTextTo(output2, 0, 1);
-    EXPECT_EQ("e zero", String(output2)) << String::format(message, 2, "e zero").utf8().data();
+    EXPECT_EQ("e zero", String(output2.data(), output2.size())) << String::format(message, 2, "e zero").utf8().data();
     backIter2.copyTextTo(output2, 1, 2);
-    EXPECT_EQ("one zero", String(output2)) << String::format(message, 2, "one zero").utf8().data();
+    EXPECT_EQ("one zero", String(output2.data(), output2.size())) << String::format(message, 2, "one zero").utf8().data();
     backIter2.advance();
     backIter2.copyTextTo(output2, 0, 1);
-    EXPECT_EQ(" one zero", String(output2)) << String::format(message, 2, " one zero").utf8().data();
+    EXPECT_EQ(" one zero", String(output2.data(), output2.size())) << String::format(message, 2, " one zero").utf8().data();
     backIter2.advance();
     backIter2.copyTextTo(output2, 0, 2);
-    EXPECT_EQ("wo one zero", String(output2)) << String::format(message, 2, "wo one zero").utf8().data();
+    EXPECT_EQ("wo one zero", String(output2.data(), output2.size())) << String::format(message, 2, "wo one zero").utf8().data();
     backIter2.copyTextTo(output2, 2, 1);
-    EXPECT_EQ("two one zero", String(output2)) << String::format(message, 2, "two one zero").utf8().data();
+    EXPECT_EQ("two one zero", String(output2.data(), output2.size())) << String::format(message, 2, "two one zero").utf8().data();
     backIter2.advance();
     backIter2.copyTextTo(output2, 0, 3);
-    EXPECT_EQ("ee two one zero", String(output2)) << String::format(message, 2, "ee two one zero").utf8().data();
+    EXPECT_EQ("ee two one zero", String(output2.data(), output2.size())) << String::format(message, 2, "ee two one zero").utf8().data();
     backIter2.copyTextTo(output2, 3, 3);
-    EXPECT_EQ("three two one zero", String(output2)) << String::format(message, 2, "three two one zero").utf8().data();
+    EXPECT_EQ("three two one zero", String(output2.data(), output2.size())) << String::format(message, 2, "three two one zero").utf8().data();
 }
 
 TEST_F(SimplifiedBackwardsTextIteratorTest, CopyWholeCodePoints)
@@ -151,7 +151,7 @@ TEST_F(SimplifiedBackwardsTextIteratorTest, CopyWholeCodePoints)
 
     EphemeralRange range(EphemeralRange::rangeOfContents(document()));
     SimplifiedBackwardsTextIterator iter(range.startPosition(), range.endPosition());
-    Vector<UChar> buffer;
+    BackwardsTextBuffer buffer;
     EXPECT_EQ(1, iter.copyTextTo(buffer, 0, 1)) << "Should emit 1 UChar for '.'.";
     EXPECT_EQ(2, iter.copyTextTo(buffer, 1, 1)) << "Should emit 2 UChars for 'U+13141'.";
     EXPECT_EQ(2, iter.copyTextTo(buffer, 3, 2)) << "Should emit 2 UChars for 'U+13140'.";