WIP: Introduce CompressibleString

third_party/WebKit/Source/wtf/wtf.gypi

 # For GN compatibility, this file can not have any conditions.
 {
     'variables': {
         'wtf_files': [
             'ASCIICType.cpp',
             'ASCIICType.h',
             'AddressSanitizer.h',
             'AddressSpaceRandomization.cpp',
             'AddressSpaceRandomization.h',
             'Alias.cpp',
@@ skipping 153 matching lines @@
             'text/AtomicString.cpp',
             'text/AtomicString.h',
             'text/AtomicStringCF.cpp',
             'text/AtomicStringHash.h',
             'text/Base64.cpp',
             'text/Base64.h',
             'text/CString.cpp',
             'text/CString.h',
             'text/CharacterNames.h',
             'text/Collator.h',
+            'text/CompressableString.cpp',
+            'text/CompressableString.h',
             'text/IntegerToStringConversion.h',
             'text/StringBuffer.h',
             'text/StringBuilder.cpp',
             'text/StringBuilder.h',
             'text/StringCF.cpp',
             'text/StringConcatenate.cpp',
             'text/StringConcatenate.h',
             'text/StringHash.h',
             'text/StringImpl.cpp',
             'text/StringImpl.h',
@@ skipping 55 matching lines @@
             'text/StringOperatorsTest.cpp',
             'text/TextCodecReplacementTest.cpp',
             'text/TextCodecUTF8Test.cpp',
             'text/WTFStringTest.cpp',
         ],
         'wtf_unittest_helper_files': [
             'testing/WTFTestPrinters.cpp',
         ],
     },
 }