pdfviewer: code cleanup - remove STL usage

experimental/PdfViewer/SkPdfUtils.h

 #ifndef __DEFINED__SkPdfUtils
 #define __DEFINED__SkPdfUtils
 
 #include "SkMatrix.h"
 #include "SkRect.h"
 #include "SkPdfConfig.h"
+#include "SkString.h"
 
 class SkPdfArray;
 class SkPdfContext;
 class SkCanvas;
 class SkPdfNativeObject;
 
 // TODO(edisonn): temporary code, to report how much of the PDF we actually think we rendered.
 enum SkPdfResult {
     kOK_SkPdfResult,
     kPartial_SkPdfResult,
@@ skipping 18 matching lines @@
         str->fBuffer = (const unsigned char*)sz;
         str->fBytes = strlen(sz);
     }
 
     bool equals(const char* sz) {
         return strncmp((const char*)fBuffer, sz, fBytes) == 0 && fBytes == strlen(sz);
 
     }
 };
 
+// TODO(edisonn): hack to make code generation simpler. Alternatively we can update the
+// generate_code.py not to rely on != operator
+bool operator !=(const SkString& first, const char* second);
+
 SkMatrix SkMatrixFromPdfArray(SkPdfArray* pdfArray);
 
 SkPdfResult doType3Char(SkPdfContext* pdfContext, SkCanvas* canvas, const SkPdfNativeObject* skobj, SkRect bBox, SkMatrix matrix, double textSize);
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 //
 // TRACE functions
 //
 #ifdef PDF_TRACE
 void SkTraceMatrix(const SkMatrix& matrix, const char* sz);
 void SkTraceRect(const SkRect& rect, const char* sz);
 #else
 #define SkTraceMatrix(a,b)
 #define SkTraceRect(a,b)
 #endif
 
 #endif   // __DEFINED__SkPdfUtils