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

content/browser/frame_host/render_frame_host_impl.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 CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_IMPL_H_
 #define CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 573 matching lines @@
   void OnRunJavaScriptMessage(const base::string16& message,
                               const base::string16& default_prompt,
                               const GURL& frame_url,
                               JavaScriptMessageType type,
                               IPC::Message* reply_msg);
   void OnRunBeforeUnloadConfirm(const GURL& frame_url,
                                 const base::string16& message,
                                 bool is_reload,
                                 IPC::Message* reply_msg);
   void OnTextSurroundingSelectionResponse(const base::string16& content,
-                                          size_t start_offset,
-                                          size_t end_offset);
+                                          uint32_t start_offset,
+                                          uint32_t end_offset);
   void OnDidAccessInitialDocument();
   void OnDidChangeOpener(int32_t opener_routing_id);
   void OnDidChangeName(const std::string& name);
   void OnEnforceStrictMixedContentChecking();
   void OnDidAssignPageId(int32_t page_id);
   void OnDidChangeSandboxFlags(int32_t frame_routing_id,
                                blink::WebSandboxFlags flags);
   void OnDidChangeFrameOwnerProperties(
       int32_t frame_routing_id,
       const blink::WebFrameOwnerProperties& frame_owner_properties);
@@ skipping 286 matching lines @@
 
   // NOTE: This must be the last member.
   base::WeakPtrFactory<RenderFrameHostImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_IMPL_H_