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

content/browser/frame_host/render_frame_host_impl.cc

Index: content/browser/frame_host/render_frame_host_impl.cc
diff --git a/content/browser/frame_host/render_frame_host_impl.cc b/content/browser/frame_host/render_frame_host_impl.cc
index 4759476e4d89231d134de32523cb463050ccf66a..e3718ee61deae906201f8e2134739954b529c06c 100644
--- a/content/browser/frame_host/render_frame_host_impl.cc
+++ b/content/browser/frame_host/render_frame_host_impl.cc
@@ -1393,8 +1393,8 @@ void RenderFrameHostImpl::OnRunBeforeUnloadConfirm(
 
 void RenderFrameHostImpl::OnTextSurroundingSelectionResponse(
     const base::string16& content,
-    size_t start_offset,
-    size_t end_offset) {
+    uint32_t start_offset,
+    uint32_t end_offset) {
   render_view_host_->OnTextSurroundingSelectionResponse(
       content, start_offset, end_offset);
 }