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

chrome/common/render_messages.cc

Index: chrome/common/render_messages.cc
diff --git a/chrome/common/render_messages.cc b/chrome/common/render_messages.cc
index 1573a2cf310af62eb533b4a47e1eb7ecb5567d15..a06ceb3e0e5d9a1d53174bbd52cd24b5c7ee5b98 100644
--- a/chrome/common/render_messages.cc
+++ b/chrome/common/render_messages.cc
@@ -27,4 +27,29 @@ void ParamTraits<ContentSettingsPattern>::Log(
   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