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

chrome/common/render_messages.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 "chrome/common/render_messages.h"
 
 #include "chrome/common/content_settings_pattern_serializer.h"
 
 namespace IPC {
 
 void ParamTraits<ContentSettingsPattern>::Write(
     Message* m, const ContentSettingsPattern& pattern) {
   ContentSettingsPatternSerializer::WriteToMessage(pattern, m);
 }
 
 bool ParamTraits<ContentSettingsPattern>::Read(
     const Message* m,
     base::PickleIterator* iter,
     ContentSettingsPattern* pattern) {
   return ContentSettingsPatternSerializer::ReadFromMessage(m, iter, pattern);
 }
 
 void ParamTraits<ContentSettingsPattern>::Log(
     const ContentSettingsPattern& p, std::string* l) {
   l->append("<ContentSettingsPattern: ");
   l->append(p.ToString());
   l->append(">");
 }
 
+void ParamTraits<blink::WebCache::UsageStats>::Write(
+    Message* m, const blink::WebCache::UsageStats& u) {
+  m->WriteSizeT(u.minDeadCapacity);
+  m->WriteSizeT(u.maxDeadCapacity);
+  m->WriteSizeT(u.capacity);
+  m->WriteSizeT(u.liveSize);
+  m->WriteSizeT(u.deadSize);
+}
+
+bool ParamTraits<blink::WebCache::UsageStats>::Read(
+    const Message* m,
+    base::PickleIterator* iter,
+    blink::WebCache::UsageStats* u) {
+  return iter->ReadSizeT(&u->minDeadCapacity) &&
+         iter->ReadSizeT(&u->maxDeadCapacity) &&
+         iter->ReadSizeT(&u->capacity) &&
+         iter->ReadSizeT(&u->liveSize) &&
+         iter->ReadSizeT(&u->deadSize);
+}
+
+void ParamTraits<blink::WebCache::UsageStats>::Log(
+    const blink::WebCache::UsageStats& p, std::string* l) {
+  l->append("<blink::WebCache::UsageStats>");
+}
+
 }  // namespace IPC