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

content/browser/renderer_host/render_widget_host_impl.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/browser/renderer_host/render_widget_host_impl.h"
 
 #include <math.h>
 #include <set>
 #include <utility>
 
@@ skipping 1294 matching lines @@
 
 const NativeWebKeyboardEvent*
     RenderWidgetHostImpl::GetLastKeyboardEvent() const {
   return input_router_->GetLastKeyboardEvent();
 }
 
 void RenderWidgetHostImpl::OnSelectionChanged(const base::string16& text,
                                               size_t offset,
                                               const gfx::Range& range) {
   if (view_)
-    view_->SelectionChanged(text, offset, range);
+    view_->SelectionChanged(text, static_cast<size_t>(offset), range);
 }
 
 void RenderWidgetHostImpl::OnSelectionBoundsChanged(
     const ViewHostMsg_SelectionBounds_Params& params) {
   if (view_) {
     view_->SelectionBoundsChanged(params);
   }
 }
 
 void RenderWidgetHostImpl::OnForwardCompositorProto(
@@ skipping 928 matching lines @@
 }
 
 #if defined(OS_WIN)
 gfx::NativeViewAccessible
     RenderWidgetHostImpl::GetParentNativeViewAccessible() {
   return delegate_ ? delegate_->GetParentNativeViewAccessible() : NULL;
 }
 #endif
 
 }  // namespace content