Add DocumentMarkerList implementation classes

third_party/WebKit/Source/core/editing/markers/TextMatchMarker.cpp

Index: third_party/WebKit/Source/core/editing/markers/TextMatchMarker.cpp
diff --git a/third_party/WebKit/Source/core/editing/markers/TextMatchMarker.cpp b/third_party/WebKit/Source/core/editing/markers/TextMatchMarker.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..efa13dba9e321d7a6c708a1694f77288b37f1db4
--- /dev/null
+++ b/third_party/WebKit/Source/core/editing/markers/TextMatchMarker.cpp
@@ -0,0 +1,42 @@
+// Copyright 2017 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 "core/editing/markers/TextMatchMarker.h"
+
+#include "core/dom/Range.h"
+
+namespace blink {
+
+TextMatchMarker::TextMatchMarker(unsigned start_offset,
+                                 unsigned end_offset,
+                                 DocumentMarker::MatchStatus match_status)
+    : DocumentMarker(start_offset, end_offset, match_status),
+      state_(State::kInvalid) {}
+
+void TextMatchMarker::UpdateRenderedRectIfNeeded(const Node& node) {
+  if (!IsValid())
+    UpdateRenderedRect(node);
+}
+
+void TextMatchMarker::UpdateRenderedRect(const Node& node) {
+  Range* range = Range::Create(node.GetDocument());
+  // The offsets of the marker may be out-dated, so check for exceptions.
+  DummyExceptionStateForTesting exceptionState;
+  range->setStart(&const_cast<Node&>(node), StartOffset(), exceptionState);
+  if (!exceptionState.HadException()) {
+    range->setEnd(&const_cast<Node&>(node), EndOffset(),
+                  IGNORE_EXCEPTION_FOR_TESTING);
+  }
+
+  if (!exceptionState.HadException()) {
+    // TODO(yosin): Once we have a |EphemeralRange| version of
+    // |boundingBox()|, we should use it instead of |Range| version.
+    SetRenderedRect(LayoutRect(range->BoundingBox()));
+  } else {
+    NullifyRenderedRect();
+  }
+  range->Dispose();
+}
+
+}  // namespace blink