Add new skpinfo tool

src/core/SkPicture.cpp

Index: src/core/SkPicture.cpp
===================================================================
--- src/core/SkPicture.cpp	(revision 13626)
+++ src/core/SkPicture.cpp	(working copy)
@@ -360,7 +360,7 @@
     SkASSERT(sizeof(kMagic) == 8);
     memcpy(header, kMagic, sizeof(kMagic));
 
-    // Set piture info after magic bytes in the header
+    // Set picture info after magic bytes in the header
     SkPictInfo* info = (SkPictInfo*)(((char*)header) + sizeof(kMagic));
     info->fVersion = CURRENT_PICTURE_VERSION;
     info->fWidth = fWidth;
@@ -382,7 +382,7 @@
     }
 
     char header[kHeaderSize];
-    createHeader(&header);
+    this->createHeader(&header);
     stream->write(header, kHeaderSize);
     if (playback) {
         stream->writeBool(true);
@@ -404,7 +404,7 @@
     }
 
     char header[kHeaderSize];
-    createHeader(&header);
+    this->createHeader(&header);
     buffer.writeByteArray(header, kHeaderSize);
     if (playback) {
         buffer.writeBool(true);