Draw the caps lock indicator manually, rather than using WKDrawCapsLockIndicator.

Source/core/platform/mac/WebCoreSystemInterface.h

 /*
  * Copyright 2006, 2007, 2008, 2009, 2010 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 12 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
  */
 
 #ifndef WebCoreSystemInterface_h
 #define WebCoreSystemInterface_h
 
 #include <objc/objc.h>
 
 typedef const struct __CFDictionary * CFDictionaryRef;
 typedef struct CGSize CGSize;
-typedef struct CGRect CGRect;
 typedef struct CGAffineTransform CGAffineTransform;
-typedef struct CGContext *CGContextRef;
 typedef struct CGFont *CGFontRef;
 typedef unsigned short CGGlyph;
 
 typedef const struct __CTFont * CTFontRef;
 typedef const struct __CTLine * CTLineRef;
 typedef struct _NSRange NSRange;
 
 typedef UInt16 ATSGlyphRef;
 
 OBJC_CLASS NSFont;
 OBJC_CLASS NSString;
 
 extern "C" {
 
-extern void WKDrawCapsLockIndicator(CGContextRef, CGRect);
 extern NSFont* WKGetFontInLanguageForRange(NSFont*, NSString*, NSRange);
 extern NSFont* WKGetFontInLanguageForCharacter(NSFont*, UniChar);
 extern BOOL WKGetGlyphTransformedAdvances(CGFontRef, NSFont*, CGAffineTransform*, ATSGlyphRef*, CGSize* advance);
 extern bool WKGetVerticalGlyphsForCharacters(CTFontRef, const UniChar[], CGGlyph[], size_t);
 extern CTLineRef WKCreateCTLineWithUniCharProvider(const UniChar* (*provide)(CFIndex stringIndex, CFIndex* charCount, CFDictionaryRef* attributes, void*), void (*dispose)(const UniChar* chars, void*), void*);
 
 }  // extern "C"
 
 #endif