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

components/web_cache/renderer/web_cache_render_process_observer.cc

 // Copyright 2014 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 "components/web_cache/renderer/web_cache_render_process_observer.h"
 
 #include <limits>
 
 #include "components/web_cache/common/web_cache_messages.h"
 #include "third_party/WebKit/public/web/WebCache.h"
@@ skipping 42 matching lines @@
                             pending_cache_max_dead_capacity_,
                             pending_cache_capacity_);
   }
 }
 
 void WebCacheRenderProcessObserver::OnRenderProcessShutdown() {
   webkit_initialized_ = false;
 }
 
 void WebCacheRenderProcessObserver::OnSetCacheCapacities(
-    size_t min_dead_capacity,
-    size_t max_dead_capacity,
-    size_t capacity) {
+    uint32_t min_dead_capacity,
+    uint32_t max_dead_capacity,
+    uint32_t capacity) {
   if (!webkit_initialized_) {
     pending_cache_min_dead_capacity_ = min_dead_capacity;
     pending_cache_max_dead_capacity_ = max_dead_capacity;
     pending_cache_capacity_ = capacity;
     return;
   }
 
   WebCache::setCapacities(
       min_dead_capacity, max_dead_capacity, capacity);
 }
 
 void WebCacheRenderProcessObserver::OnClearCache(bool on_navigation) {
   if (on_navigation || !webkit_initialized_)
     clear_cache_pending_ = true;
   else
     WebCache::clear();
 }
 
 }  // namespace web_cache