Fix Windows compilation after r15750

BUG=None
TBR=yangguo@chromium.org

Review URL: https://codereview.chromium.org/19778003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15753 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/circular-queue.cc

@@ -35,7 +35,7 @@ namespace internal {
 
 SamplingCircularQueue::SamplingCircularQueue(size_t record_size_in_bytes,
                                              size_t desired_chunk_size_in_bytes,
-                                             int buffer_size_in_chunks)
+                                             unsigned buffer_size_in_chunks)
     : record_size_(record_size_in_bytes / sizeof(Cell)),
       chunk_size_in_bytes_(desired_chunk_size_in_bytes / record_size_in_bytes *
                         record_size_in_bytes + sizeof(Cell)),
@@ -46,7 +46,7 @@ SamplingCircularQueue::SamplingCircularQueue(size_t record_size_in_bytes,
   ASSERT(chunk_size_ * sizeof(Cell) == chunk_size_in_bytes_);
   ASSERT(buffer_size_in_chunks > 2);
   // Mark all chunks as clear.
-  for (int i = 0; i < buffer_size_; i += chunk_size_) {
+  for (size_t i = 0; i < buffer_size_; i += chunk_size_) {
     buffer_[i] = kClear;
   }
 

src/circular-queue.h

@@ -47,7 +47,7 @@ class SamplingCircularQueue {
   // Executed on the application thread.
   SamplingCircularQueue(size_t record_size_in_bytes,
                         size_t desired_chunk_size_in_bytes,
-                        int buffer_size_in_chunks);
+                        unsigned buffer_size_in_chunks);
   ~SamplingCircularQueue();
 
   // Enqueue returns a pointer to a memory location for storing the next
@@ -88,10 +88,10 @@ class SamplingCircularQueue {
 
   INLINE(void WrapPositionIfNeeded(Cell** pos));
 
-  const int record_size_;
+  const size_t record_size_;
   const size_t chunk_size_in_bytes_;
-  const int chunk_size_;
-  const int buffer_size_;
+  const size_t chunk_size_;
+  const size_t buffer_size_;
   Cell* buffer_;
   byte* positions_;
   ProducerPosition* producer_pos_;