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

content/renderer/text_input_client_observer.cc

 // Copyright (c) 2012 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 "content/renderer/text_input_client_observer.h"
 
 #include <stddef.h>
 
 #include "base/memory/scoped_ptr.h"
 #include "build/build_config.h"
@@ skipping 47 matching lines @@
       mac::AttributedStringCoder::Encode(string));
   Send(new TextInputClientReplyMsg_GotStringAtPoint(
       routing_id(), *encoded.get(), baselinePoint));
 #else
   NOTIMPLEMENTED();
 #endif
 }
 
 void TextInputClientObserver::OnCharacterIndexForPoint(gfx::Point point) {
   blink::WebPoint web_point(point);
-  size_t index = webview()->focusedFrame()->characterIndexForPoint(web_point);
+  uint32_t index = static_cast<uint32_t>(
+      webview()->focusedFrame()->characterIndexForPoint(web_point));
   Send(new TextInputClientReplyMsg_GotCharacterIndexForPoint(routing_id(),
       index));
 }
 
 void TextInputClientObserver::OnFirstRectForCharacterRange(gfx::Range range) {
   gfx::Rect rect;
 #if defined(ENABLE_PLUGINS)
   if (render_view_impl_->focused_pepper_plugin()) {
     rect = render_view_impl_->focused_pepper_plugin()->GetCaretBounds();
   } else
@@ skipping 22 matching lines @@
   scoped_ptr<const mac::AttributedStringCoder::EncodedString> encoded(
       mac::AttributedStringCoder::Encode(string));
   Send(new TextInputClientReplyMsg_GotStringForRange(routing_id(),
       *encoded.get(), baselinePoint));
 #else
   NOTIMPLEMENTED();
 #endif
 }
 
 }  // namespace content