Revert CompressibleString (and its UMA)

third_party/WebKit/Source/platform/text/CompressibleString.h

Index: third_party/WebKit/Source/platform/text/CompressibleString.h
diff --git a/third_party/WebKit/Source/platform/text/CompressibleString.h b/third_party/WebKit/Source/platform/text/CompressibleString.h
deleted file mode 100644
index 0ab99cf644b5376a25ab29af06e406fc2bbb752b..0000000000000000000000000000000000000000
--- a/third_party/WebKit/Source/platform/text/CompressibleString.h
+++ /dev/null
@@ -1,120 +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.
-
-#ifndef CompressibleString_h
-#define CompressibleString_h
-
-#include "platform/PlatformExport.h"
-#include "wtf/RefCounted.h"
-#include "wtf/text/Unicode.h"
-#include "wtf/text/WTFString.h"
-
-namespace blink {
-
-// TODO(hajimehoshi): Now these classes are in platform/text to use UMA. Move
-// them to wtf/text.
-
-class PLATFORM_EXPORT CompressibleStringImpl final : public RefCounted<CompressibleStringImpl> {
-    WTF_MAKE_NONCOPYABLE(CompressibleStringImpl);
-public:
-    static void compressAll();
-
-    CompressibleStringImpl()
-        : m_string()
-        , m_isCompressed(false)
-    {
-    }
-
-    explicit CompressibleStringImpl(PassRefPtr<StringImpl>);
-    ~CompressibleStringImpl();
-
-    bool isEmpty() const { return originalLength() == 0; }
-
-    bool isCompressed() const { return m_isCompressed; }
-    unsigned originalLength() const { return m_string.length(); }
-    bool is8Bit() const { return m_string.is8Bit(); }
-
-    unsigned originalContentSizeInBytes() const
-    {
-        if (is8Bit())
-            return originalLength() * sizeof(LChar);
-        return originalLength() * sizeof(UChar);
-    }
-
-    // TODO(hajimehoshi): Update this once we implement compression.
-    unsigned currentSizeInBytes() const
-    {
-        return originalContentSizeInBytes();
-    }
-
-    const String& toString()
-    {
-        if (UNLIKELY(isCompressed()))
-            decompressString();
-        return m_string;
-    }
-
-    const LChar* characters8()
-    {
-        return toString().characters8();
-    }
-
-    const UChar* characters16()
-    {
-        return toString().characters16();
-    }
-
-    void compressString();
-    void decompressString();
-
-private:
-    String m_string;
-    bool m_isCompressed;
-};
-
-class PLATFORM_EXPORT CompressibleString final {
-public:
-    CompressibleString()
-        : m_impl(nullptr)
-    {
-    }
-
-    CompressibleString(const CompressibleString& rhs)
-        : m_impl(rhs.m_impl)
-    {
-    }
-
-    explicit CompressibleString(PassRefPtr<StringImpl> impl)
-        : m_impl(impl ? adoptRef(new CompressibleStringImpl(impl)) : nullptr)
-    {
-    }
-
-    bool isNull() const { return !m_impl; }
-    bool isEmpty() const { return isNull() || m_impl->isEmpty(); }
-    unsigned length() const { return m_impl ? m_impl->originalLength() : 0; }
-
-    unsigned currentSizeInBytes() const { return m_impl ? m_impl->currentSizeInBytes() : 0; }
-
-    bool isCompressed() const { return m_impl ? m_impl->isCompressed() : false; }
-    bool is8Bit() const { return m_impl ? m_impl->is8Bit() : false; }
-
-    const String& toString() const { return m_impl ? m_impl->toString() : emptyString(); }
-    const LChar* characters8() const { return m_impl ? m_impl->characters8() : nullptr; }
-    const UChar* characters16() const { return m_impl ? m_impl->characters16() : nullptr; }
-
-    CompressibleStringImpl* impl() const { return m_impl.get(); }
-
-private:
-    void compressString() const { m_impl->compressString(); }
-    void decompressString() const { m_impl->decompressString(); }
-
-    mutable RefPtr<CompressibleStringImpl> m_impl;
-};
-
-} // namespace blink
-
-using blink::CompressibleString;
-using blink::CompressibleStringImpl;
-
-#endif