pdfviewer: measure mem usage, command line flags library.

experimental/PdfViewer/pdfparser/native/SkPdfNativeTokenizer.h

Index: experimental/PdfViewer/pdfparser/native/SkPdfNativeTokenizer.h
===================================================================
--- experimental/PdfViewer/pdfparser/native/SkPdfNativeTokenizer.h	(revision 9988)
+++ experimental/PdfViewer/pdfparser/native/SkPdfNativeTokenizer.h	(working copy)
@@ -83,9 +83,11 @@
     int fCurrentUsed;
 
     SkPdfObject* allocBlock();
+    size_t fSizeInBytes;
 
 public:
     SkPdfAllocator() {
+        fSizeInBytes = sizeof(*this);
         fCurrent = allocBlock();
         fCurrentUsed = 0;
     }
@@ -98,8 +100,13 @@
     void* alloc(size_t bytes) {
         void* data = malloc(bytes);
         fHandles.push(data);
+        fSizeInBytes += bytes;
         return data;
     }
+
+    size_t bytesUsed() {
+        return fSizeInBytes;
+    }
 };
 
 class SkNativeParsedPDF;