gpu: Maintain the deferred log messages separately from the IPC messages.

content/gpu/gpu_child_thread.cc

Index: content/gpu/gpu_child_thread.cc
diff --git a/content/gpu/gpu_child_thread.cc b/content/gpu/gpu_child_thread.cc
index 72c88b9b0510985c189c789ce41f2f2dad336412..51249fd9cc7becfe0b2db5c0912d111d2a4dfe4e 100644
--- a/content/gpu/gpu_child_thread.cc
+++ b/content/gpu/gpu_child_thread.cc
@@ -186,10 +186,6 @@ GpuChildThread::GpuChildThread(
 }
 
 GpuChildThread::~GpuChildThread() {
-  while (!deferred_messages_.empty()) {
-    delete deferred_messages_.front();
-    deferred_messages_.pop();
-  }
 }
 
 void GpuChildThread::Shutdown() {
@@ -319,7 +315,8 @@ void GpuChildThread::OnInitialize(const gpu::GpuPreferences& gpu_preferences) {
   gpu_info_.initialization_time = base::Time::Now() - process_start_time_;
   Send(new GpuHostMsg_Initialized(!dead_on_arrival_, gpu_info_));
   while (!deferred_messages_.empty()) {
-    Send(deferred_messages_.front());
+    const LogMessage& log = deferred_messages_.front();
+    Send(new GpuHostMsg_OnLogMessage(log.severity, log.header, log.message));
     deferred_messages_.pop();
   }