Motown: Stop requiring size when releasing payload buffers.

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

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MOJO_SERVICES_MEDIA_COMMON_CPP_FIFO_ALLOCATOR_H_
 #define MOJO_SERVICES_MEDIA_COMMON_CPP_FIFO_ALLOCATOR_H_
 
 #include <cstdint>
 #include <limits>
 
@@ skipping 59 matching lines @@
 
   // Resets the buffer manager to its initial state (no regions allocated)
   // with a new buffer size. Also deletes all the regions in the lookaside.
   void Reset(uint64_t size);
 
   // Allocates a region and returns its offset or kNullOffset if the allocation
   // could not be performed.
   uint64_t AllocateRegion(uint64_t size);
 
   // Releases a previously-allocated region.
-  void ReleaseRegion(uint64_t size, uint64_t offset);
+  void ReleaseRegion(uint64_t offset);
 
  private:
   // List element to track allocated and free regions.
   struct Region {
     bool allocated;
     uint64_t size;
     uint64_t offset;
 
     // Intrusive list pointers.
     Region* prev;
     Region* next;
   };
 
   // Releases the specified region if it's found between begin (inclusive) and
   // end (exclusive).
-  bool Release(uint64_t size, uint64_t offset, Region* begin, Region* end);
+  bool Release(uint64_t offset, Region* begin, Region* end);
 
   // Advances the active region to one that's at least the specified size.
   // Returns false if none could be found.
   bool AdvanceActive(uint64_t size);
 
   // Does the above for the interval between begin (inclusive) and end
   // (exclusive).
   bool AdvanceActive(uint64_t size, Region* begin, Region* end);
 
   // Inserts a zero-sized region after active_ and makes that the active region.
@@ skipping 29 matching lines @@
   Region* free_;
 
   // Unallocated region from which allocations are currently being made.
   Region* active_;
 };
 
 }  // namespace media
 }  // namespace mojo
 
 #endif  // MOJO_SERVICES_MEDIA_COMMON_CPP_FIFO_ALLOCATOR_H_