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

content/browser/frame_host/render_frame_host_impl.h

Index: content/browser/frame_host/render_frame_host_impl.h
diff --git a/content/browser/frame_host/render_frame_host_impl.h b/content/browser/frame_host/render_frame_host_impl.h
index 61c61a32b0a6a3e0b1853a8b27610bbaa3ace65e..87c8f01a329ce329ed5d62a9744af49ce65596c4 100644
--- a/content/browser/frame_host/render_frame_host_impl.h
+++ b/content/browser/frame_host/render_frame_host_impl.h
@@ -591,8 +591,8 @@ class CONTENT_EXPORT RenderFrameHostImpl
                                 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);