pdfviewer: load files with missing xref (we need in order to help with testing, as most good pdfx i…

experimental/PdfViewer/pdfparser/native/SkPdfObject.h

 #ifndef EXPERIMENTAL_PDFVIEWER_PDFPARSER_NATIVE_SKPDFOBJECT_H_
 #define EXPERIMENTAL_PDFVIEWER_PDFPARSER_NATIVE_SKPDFOBJECT_H_
 
 #include <stdint.h>
 #include <string.h>
 #include <string>
 #include "SkTDArray.h"
 #include "SkTDict.h"
 #include "SkRect.h"
 #include "SkMatrix.h"
@@ skipping 509 matching lines @@
     }
 
     bool isKeywordReference() const {
         return fObjectType == kKeyword_PdfObjectType && fStr.fBytes == 1 && fStr.fBuffer[0] == 'R';
     }
 
     bool isKeyword() const {
         return fObjectType == kKeyword_PdfObjectType;
     }
 
+    bool isKeyword(const char* keyword) const {
+        if (!isKeyword()) {
+            return false;
+        }
+
+        if (strlen(keyword) != fStr.fBytes) {
+            return false;
+        }
+
+        if (strncmp(keyword, (const char*)fStr.fBuffer, fStr.fBytes) != 0) {
+            return false;
+        }
+
+        return true;
+    }
+
     bool isName() const {
         return fObjectType == kName_PdfObjectType;
     }
 
     bool isName(const char* name) const {
         return fObjectType == kName_PdfObjectType && fStr.fBytes == strlen(name) && strncmp((const char*)fStr.fBuffer, name, fStr.fBytes) == 0;
     }
 
     bool isArray() const {
         return fObjectType == kArray_PdfObjectType;
@@ skipping 370 matching lines @@
     SkPdfName() : SkPdfObject() {
         SkPdfObject::makeName((const unsigned char*)"", this);
     }
 public:
     SkPdfName(char* name) : SkPdfObject() {
         this->makeName((const unsigned char*)name, this);
     }
 };
 
 #endif  // EXPERIMENTAL_PDFVIEWER_PDFPARSER_NATIVE_SKPDFOBJECT_H_