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

extensions/renderer/extensions_render_frame_observer.cc

 // Copyright 2014 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.
 
 #include "extensions/renderer/extensions_render_frame_observer.h"
 
 #include <stddef.h>
 
 #include "base/strings/string_split.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 67 matching lines @@
     : content::RenderFrameObserver(render_frame) {
 }
 
 ExtensionsRenderFrameObserver::~ExtensionsRenderFrameObserver() {
 }
 
 void ExtensionsRenderFrameObserver::DetailedConsoleMessageAdded(
     const base::string16& message,
     const base::string16& source,
     const base::string16& stack_trace_string,
-    int32_t line_number,
+    uint32_t line_number,
     int32_t severity_level) {
   base::string16 trimmed_message = message;
   StackTrace stack_trace = GetStackTraceFromMessage(
       &trimmed_message,
       source,
       stack_trace_string,
       line_number);
   Send(new ExtensionHostMsg_DetailedConsoleMessageAdded(
       routing_id(), trimmed_message, source, stack_trace, severity_level));
 }
 
 }  // namespace extensions