Change CachingWordShapeIterator to delimit CJK characters

third_party/WebKit/Source/platform/fonts/Character.cpp

 /*
  * Copyright (C) 2014 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 15 matching lines @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "platform/fonts/Character.h"
 
 #include "wtf/StdLibExtras.h"
 #include "wtf/text/StringBuilder.h"
 #include <algorithm>
+#include <unicode/uscript.h>
 
 using namespace WTF;
 using namespace Unicode;
 
 namespace blink {
 
 static const UChar32 cjkIsolatedSymbolsArray[] = {
     // 0x2C7 Caron, Mandarin Chinese 3rd Tone
     0x2C7,
     // 0x2CA Modifier Letter Acute Accent, Mandarin Chinese 2nd Tone
@@ skipping 458 matching lines @@
 String Character::normalizeSpaces(const LChar* characters, unsigned length)
 {
     return normalizeSpacesInternal(characters, length);
 }
 
 String Character::normalizeSpaces(const UChar* characters, unsigned length)
 {
     return normalizeSpacesInternal(characters, length);
 }
 
+bool Character::isCommonOrInheritedScript(UChar32 character)
+{
+    UErrorCode status = U_ZERO_ERROR;
+    UScriptCode script = uscript_getScript(character, &status);
+    return U_SUCCESS(status) && (script == USCRIPT_COMMON || script == USCRIPT_INHERITED);
+}
+
 } // namespace blink