Remove unused IPC::Message priority.

base/pickle.h

 // Copyright (c) 2012 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 BASE_PICKLE_H__
 #define BASE_PICKLE_H__
 
 #include <string>
 
 #include "base/base_export.h"
@@ skipping 96 matching lines @@
 
   // Initialize a Pickle object with the specified header size in bytes, which
   // must be greater-than-or-equal-to sizeof(Pickle::Header).  The header size
   // will be rounded up to ensure that the header size is 32bit-aligned.
   explicit Pickle(int header_size);
 
   // Initializes a Pickle from a const block of data.  The data is not copied;
   // instead the data is merely referenced by this Pickle.  Only const methods
   // should be used on the Pickle when initialized this way.  The header
   // padding size is deduced from the data length.
-  Pickle(const char* data, int data_len);
+  Pickle(const char* data, size_t data_len);
 
   // Initializes a Pickle as a deep copy of another Pickle.
   Pickle(const Pickle& other);
 
   // Note: There are no virtual methods in this class.  This destructor is
   // virtual as an element of defensive coding.  Other classes have derived from
   // this class, and there is a *chance* that they will cast into this base
   // class before destruction.  At least one such class does have a virtual
   // destructor, suggesting at least some need to call more derived destructors.
   virtual ~Pickle();
@@ skipping 226 matching lines @@
   // Allocation size of payload (or -1 if allocation is const).
   size_t capacity_;
   size_t variable_buffer_offset_;  // IF non-zero, then offset to a buffer.
 
   FRIEND_TEST_ALL_PREFIXES(PickleTest, Resize);
   FRIEND_TEST_ALL_PREFIXES(PickleTest, FindNext);
   FRIEND_TEST_ALL_PREFIXES(PickleTest, FindNextWithIncompleteHeader);
 };
 
 #endif  // BASE_PICKLE_H__