Move state machines to state_machines subdir

third_party/WebKit/Source/core/editing/BackspaceStateMachine.cpp

Index: third_party/WebKit/Source/core/editing/BackspaceStateMachine.cpp
diff --git a/third_party/WebKit/Source/core/editing/BackspaceStateMachine.cpp b/third_party/WebKit/Source/core/editing/BackspaceStateMachine.cpp
deleted file mode 100644
index 701c07d0a03426b47cd8239bb53b97ed55bf0a9d..0000000000000000000000000000000000000000
--- a/third_party/WebKit/Source/core/editing/BackspaceStateMachine.cpp
+++ /dev/null
@@ -1,59 +0,0 @@
-// Copyright 2016 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/BackspaceStateMachine.h"
-
-#include "wtf/text/Unicode.h"
-
-namespace blink {
-
-int BackspaceStateMachine::finalizeAndGetCodeUnitCountToBeDeleted()
-{
-    if (m_trailSurrogate != 0) {
-        // Unpaired trail surrogate. Removing broken surrogate.
-        ++m_codeUnitsToBeDeleted;
-        m_trailSurrogate = 0;
-    }
-    return m_codeUnitsToBeDeleted;
-}
-
-bool BackspaceStateMachine::updateState(UChar codeUnit)
-{
-    uint32_t codePoint = codeUnit;
-    if (U16_IS_LEAD(codeUnit)) {
-        if (m_trailSurrogate == 0) {
-            // Unpaired lead surrogate. Aborting with deleting broken surrogate.
-            ++m_codeUnitsToBeDeleted;
-            return true;
-        }
-        codePoint = U16_GET_SUPPLEMENTARY(codeUnit, m_trailSurrogate);
-        m_trailSurrogate = 0;
-    } else if (U16_IS_TRAIL(codeUnit)) {
-        if (m_trailSurrogate != 0) {
-            // Unpaired trail surrogate. Aborting with deleting broken
-            // surrogate.
-            return true;
-        }
-        m_trailSurrogate = codeUnit;
-        return false; // Needs surrogate lead.
-    } else {
-        if (m_trailSurrogate != 0) {
-            // Unpaired trail surrogate. Aborting with deleting broken
-            // surrogate.
-            return true;
-        }
-    }
-
-    // TODO(nona): Handle emoji sequences.
-    m_codeUnitsToBeDeleted = U16_LENGTH(codePoint);
-    return true;
-}
-
-void BackspaceStateMachine::reset()
-{
-    m_codeUnitsToBeDeleted = 0;
-    m_trailSurrogate = 0;
-}
-
-} // namespace blink