Add compile time checks against longs being used in IPC structs on 32 bit Android.

extensions/common/stack_frame.h

 // Copyright 2013 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 EXTENSIONS_COMMON_STACK_FRAME_H_
 #define EXTENSIONS_COMMON_STACK_FRAME_H_
 
 #include <stddef.h>
 
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
 
 namespace extensions {
 
 struct StackFrame {
   StackFrame();
   StackFrame(const StackFrame& frame);
-  StackFrame(size_t line_number,
-             size_t column_number,
+  StackFrame(uint32_t line_number,
+             uint32_t column_number,
              const base::string16& source,
              const base::string16& function);
   ~StackFrame();
 
   // Construct a stack frame from a reported plain-text frame.
   static scoped_ptr<StackFrame> CreateFromText(
       const base::string16& frame_text);
 
   bool operator==(const StackFrame& rhs) const;
 
-  size_t line_number;
-  size_t column_number;
+  uint32_t line_number;
+  uint32_t column_number;
   base::string16 source;
   base::string16 function;  // optional
 };
 
 typedef std::vector<StackFrame> StackTrace;
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_COMMON_STACK_FRAME_H_