pdfviewer: measure mem usage, command line flags library.

experimental/PdfViewer/pdfparser/native/SkPdfNativeTokenizer.cpp

Index: experimental/PdfViewer/pdfparser/native/SkPdfNativeTokenizer.cpp
===================================================================
--- experimental/PdfViewer/pdfparser/native/SkPdfNativeTokenizer.cpp	(revision 9990)
+++ experimental/PdfViewer/pdfparser/native/SkPdfNativeTokenizer.cpp	(working copy)
@@ -651,6 +651,7 @@
 }
 
 SkPdfObject* SkPdfAllocator::allocBlock() {
+    fSizeInBytes += BUFFER_SIZE * sizeof(SkPdfObject);
     return new SkPdfObject[BUFFER_SIZE];
 }
 
@@ -675,6 +676,7 @@
         fHistory.push(fCurrent);
         fCurrent = allocBlock();
         fCurrentUsed = 0;
+        fSizeInBytes += sizeof(SkPdfObject*);
     }
     fCurrentUsed++;
     return &fCurrent[fCurrentUsed - 1];