Revert of Add OpenTypeCapsSupport class

third_party/WebKit/Source/platform/fonts/opentype/OpenTypeCapsSupport.cpp

Index: third_party/WebKit/Source/platform/fonts/opentype/OpenTypeCapsSupport.cpp
diff --git a/third_party/WebKit/Source/platform/fonts/opentype/OpenTypeCapsSupport.cpp b/third_party/WebKit/Source/platform/fonts/opentype/OpenTypeCapsSupport.cpp
deleted file mode 100644
index bba64a56b121b822bce37b935a2920e53cfb5971..0000000000000000000000000000000000000000
--- a/third_party/WebKit/Source/platform/fonts/opentype/OpenTypeCapsSupport.cpp
+++ /dev/null
@@ -1,173 +0,0 @@
-// Copyright 2015 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 "platform/fonts/opentype/OpenTypeCapsSupport.h"
-
-namespace blink {
-
-OpenTypeCapsSupport::OpenTypeCapsSupport()
-    : m_harfBuzzFace(nullptr)
-    , m_requestedCaps(FontDescription::CapsNormal)
-    , m_fontSupport(FontSupport::Full)
-    , m_capsSynthesis(CapsSynthesis::None)
-{
-}
-
-OpenTypeCapsSupport::OpenTypeCapsSupport(const HarfBuzzFace* harfBuzzFace,
-    FontDescription::FontVariantCaps requestedCaps,
-    hb_script_t script)
-    : m_harfBuzzFace(harfBuzzFace)
-    , m_requestedCaps(requestedCaps)
-    , m_fontSupport(FontSupport::Full)
-    , m_capsSynthesis(CapsSynthesis::None)
-{
-    if (requestedCaps != FontDescription::CapsNormal)
-        determineFontSupport(script);
-}
-
-FontDescription::FontVariantCaps OpenTypeCapsSupport::fontFeatureToUse(
-    SmallCapsIterator::SmallCapsBehavior sourceTextCase)
-{
-    if (m_fontSupport == FontSupport::Full)
-        return m_requestedCaps;
-
-    if (m_fontSupport == FontSupport::Fallback) {
-        if (m_requestedCaps == FontDescription::FontVariantCaps::AllPetiteCaps)
-            return FontDescription::FontVariantCaps::AllSmallCaps;
-
-        if (m_requestedCaps == FontDescription::FontVariantCaps::PetiteCaps
-            || (m_requestedCaps == FontDescription::FontVariantCaps::Unicase
-            && sourceTextCase == SmallCapsIterator::SmallCapsSameCase))
-            return FontDescription::FontVariantCaps::SmallCaps;
-    }
-
-    return FontDescription::FontVariantCaps::CapsNormal;
-}
-
-bool OpenTypeCapsSupport::needsRunCaseSplitting()
-{
-    // Lack of titling case support is ignored, titling case is not synthesized.
-    return m_fontSupport != FontSupport::Full
-        && m_requestedCaps != FontDescription::TitlingCaps;
-}
-
-bool OpenTypeCapsSupport::needsSyntheticFont(
-    SmallCapsIterator::SmallCapsBehavior runCase)
-{
-    if (m_fontSupport == FontSupport::Full)
-        return false;
-
-    if (m_requestedCaps == FontDescription::TitlingCaps)
-        return false;
-
-    if (m_fontSupport == FontSupport::None) {
-        if (runCase == SmallCapsIterator::SmallCapsUppercaseNeeded
-            && (m_capsSynthesis == CapsSynthesis::LowerToSmallCaps
-            || m_capsSynthesis == CapsSynthesis::BothToSmallCaps))
-            return true;
-
-        if (runCase == SmallCapsIterator::SmallCapsSameCase
-            && (m_capsSynthesis == CapsSynthesis::UpperToSmallCaps
-            || m_capsSynthesis == CapsSynthesis::BothToSmallCaps)) {
-            return true;
-        }
-    }
-
-    return false;
-}
-
-CaseMapIntend OpenTypeCapsSupport::needsCaseChange(
-    SmallCapsIterator::SmallCapsBehavior runCase)
-{
-    CaseMapIntend caseMapIntend = CaseMapIntend::KeepSameCase;
-
-    if (m_fontSupport == FontSupport::Full)
-        return caseMapIntend;
-
-    switch (runCase) {
-    case SmallCapsIterator::SmallCapsSameCase:
-        caseMapIntend = m_fontSupport == FontSupport::Fallback
-            && (m_capsSynthesis == CapsSynthesis::BothToSmallCaps
-            || m_capsSynthesis == CapsSynthesis::UpperToSmallCaps)
-            ? CaseMapIntend::LowerCase
-            : CaseMapIntend::KeepSameCase;
-        break;
-    case SmallCapsIterator::SmallCapsUppercaseNeeded:
-        caseMapIntend = m_fontSupport != FontSupport::Fallback
-            && (m_capsSynthesis == CapsSynthesis::LowerToSmallCaps
-            || m_capsSynthesis == CapsSynthesis::BothToSmallCaps)
-            ? CaseMapIntend::UpperCase
-            : CaseMapIntend::KeepSameCase;
-        break;
-    default:
-        break;
-    }
-    return caseMapIntend;
-}
-
-void OpenTypeCapsSupport::determineFontSupport(hb_script_t script)
-{
-    switch (m_requestedCaps) {
-    case FontDescription::SmallCaps:
-        if (!supportsOpenTypeFeature(script, HB_TAG('s', 'm', 'c', 'p'))) {
-            m_fontSupport = FontSupport::None;
-            m_capsSynthesis = CapsSynthesis::LowerToSmallCaps;
-        }
-        break;
-    case FontDescription::AllSmallCaps:
-        if (!(supportsOpenTypeFeature(script, HB_TAG('s', 'm', 'c', 'p'))
-            && supportsOpenTypeFeature(
-                script,
-                HB_TAG('c', '2', 's', 'c')))) {
-            m_fontSupport = FontSupport::None;
-            m_capsSynthesis = CapsSynthesis::BothToSmallCaps;
-        }
-        break;
-    case FontDescription::PetiteCaps:
-        if (!supportsOpenTypeFeature(script, HB_TAG('p', 'c', 'a', 'p'))) {
-            if (supportsOpenTypeFeature(script, HB_TAG('s', 'm', 'c', 'p'))) {
-                m_fontSupport = FontSupport::Fallback;
-            } else {
-                m_fontSupport = FontSupport::None;
-                m_capsSynthesis = CapsSynthesis::LowerToSmallCaps;
-            }
-        }
-        break;
-    case FontDescription::AllPetiteCaps:
-        if (!(supportsOpenTypeFeature(script, HB_TAG('p', 'c', 'a', 'p'))
-            && supportsOpenTypeFeature(
-            script,
-            HB_TAG('c', '2', 'p', 'c')))) {
-            if (supportsOpenTypeFeature(script, HB_TAG('s', 'm', 'c', 'p'))
-                && supportsOpenTypeFeature(
-                script,
-                HB_TAG('c', '2', 's', 'c'))) {
-                m_fontSupport = FontSupport::Fallback;
-            } else {
-                m_fontSupport = FontSupport::None;
-                m_capsSynthesis = CapsSynthesis::BothToSmallCaps;
-            }
-        }
-        break;
-    case FontDescription::Unicase:
-        if (!supportsOpenTypeFeature(script, HB_TAG('u', 'n', 'i', 'c'))) {
-            m_capsSynthesis = CapsSynthesis::UpperToSmallCaps;
-            if (supportsOpenTypeFeature(script, HB_TAG('s', 'm', 'c', 'p'))) {
-                m_fontSupport = FontSupport::Fallback;
-            } else {
-                m_fontSupport = FontSupport::None;
-            }
-        }
-        break;
-    case FontDescription::TitlingCaps:
-        if (!supportsOpenTypeFeature(script, HB_TAG('t', 'i', 't', 'l'))) {
-            m_fontSupport = FontSupport::None;
-        }
-        break;
-    default:
-        ASSERT_NOT_REACHED();
-    }
-}
-
-} // namespace blink