fix warnings around size_t/int

src/core/SkPicturePlayback.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include <new>
 #include "SkBBoxHierarchy.h"
 #include "SkPicturePlayback.h"
 #include "SkPictureRecord.h"
@@ skipping 292 matching lines @@
         }
     }
     return false;
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////////////////////////
 
 #include "SkStream.h"
 
-static void write_tag_size(SkWriteBuffer& buffer, uint32_t tag, uint32_t size) {
+static void write_tag_size(SkWriteBuffer& buffer, uint32_t tag, size_t size) {
     buffer.writeUInt(tag);
     buffer.writeUInt(size);
 }
 
-static void write_tag_size(SkWStream* stream, uint32_t tag,  uint32_t size) {
+static void write_tag_size(SkWStream* stream, uint32_t tag,  size_t size) {
     stream->write32(tag);
-    stream->write32(size);
+    stream->write32(SkToU32(size));
 }
 
 static size_t compute_chunk_size(SkFlattenable::Factory* array, int count) {
     size_t size = 4;  // for 'count'
 
     for (int i = 0; i < count; i++) {
         const char* name = SkFlattenable::FactoryToName(array[i]);
         if (NULL == name || 0 == *name) {
             size += SkWStream::SizeOfPackedUInt(0);
         } else {
@@ skipping 19 matching lines @@
     write_tag_size(stream, SK_PICT_FACTORY_TAG, (uint32_t) size);
     SkDEBUGCODE(size_t start = stream->bytesWritten());
     stream->write32(count);
 
     for (int i = 0; i < count; i++) {
         const char* name = SkFlattenable::FactoryToName(array[i]);
 //        SkDebugf("---- write factories [%d] %p <%s>\n", i, array[i], name);
         if (NULL == name || 0 == *name) {
             stream->writePackedUInt(0);
         } else {
-            uint32_t len = strlen(name);
+            size_t len = strlen(name);
             stream->writePackedUInt(len);
             stream->write(name, len);
         }
     }
 
     SkASSERT(size == (stream->bytesWritten() - start));
 }
 
 static void write_typefaces(SkWStream* stream, const SkRefCntSet& rec) {
     int count = rec.count();
@@ skipping 1408 matching lines @@
     for (index = 0; index < fPictureCount; index++)
         bufferPtr += snprintf(bufferPtr, DUMP_BUFFER_SIZE - (bufferPtr - pBuffer),
             "picture%p, ", fPictureRefs[index]);
     if (fPictureCount > 0)
         SkDebugf("%s0};\n", pBuffer);
 
     const_cast<SkPicturePlayback*>(this)->dumpStream();
 }
 
 #endif