Motown: Stop requiring size when releasing payload buffers.

mojo/services/media/common/cpp/shared_media_buffer_allocator.h

Index: mojo/services/media/common/cpp/shared_media_buffer_allocator.h
diff --git a/mojo/services/media/common/cpp/shared_media_buffer_allocator.h b/mojo/services/media/common/cpp/shared_media_buffer_allocator.h
index 994e83fdfd259bc431f19447a3dd3c75e94cf1cc..3700a139256ddfd726ff22094ba63355b43f0cce 100644
--- a/mojo/services/media/common/cpp/shared_media_buffer_allocator.h
+++ b/mojo/services/media/common/cpp/shared_media_buffer_allocator.h
@@ -36,9 +36,9 @@ class SharedMediaBufferAllocator : public MappedSharedBuffer {
 
   // Releases a region of the buffer previously allocated by calling
   // AllocateRegionByOffset.
-  void ReleaseRegionByOffset(uint64_t size, uint64_t offset) {
+  void ReleaseRegionByOffset(uint64_t offset) {
     std::lock_guard<std::mutex> lock(lock_);
-    fifo_allocator_.ReleaseRegion(size, offset);
+    fifo_allocator_.ReleaseRegion(offset);
   }
 
   // Allocates a region of the buffer returning a pointer. If the requested
@@ -49,8 +49,8 @@ class SharedMediaBufferAllocator : public MappedSharedBuffer {
 
   // Releases a region of the buffer previously allocated by calling
   // AllocateRegion.
-  void ReleaseRegion(uint64_t size, void* ptr) {
-    ReleaseRegionByOffset(size, OffsetFromPtr(ptr));
+  void ReleaseRegion(void* ptr) {
+    ReleaseRegionByOffset(OffsetFromPtr(ptr));
   }
 
  protected: