gpu: Introduce GpuInit.

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 a0ba2b6bcdb30e2a123819c408b0fc8cfdf663f1..10201cabd226c2c7eaee72b22891eb4592745abf 100644
--- a/content/gpu/gpu_child_thread.cc
+++ b/content/gpu/gpu_child_thread.cc
@@ -146,12 +146,12 @@ GpuChildThread::GpuChildThread(
     gpu::GpuWatchdogThread* watchdog_thread,
     bool dead_on_arrival,
     const gpu::GPUInfo& gpu_info,
-    const DeferredMessages& deferred_messages,
+    std::vector<gpu::GpuInitLogMessage> deferred_messages,
     gpu::GpuMemoryBufferFactory* gpu_memory_buffer_factory)
     : ChildThreadImpl(GetOptions(gpu_memory_buffer_factory)),
       dead_on_arrival_(dead_on_arrival),
       gpu_info_(gpu_info),
-      deferred_messages_(deferred_messages),
+      deferred_messages_(std::move(deferred_messages)),
       in_browser_process_(false),
       gpu_memory_buffer_factory_(gpu_memory_buffer_factory) {
   watchdog_thread_ = watchdog_thread;
@@ -190,12 +190,7 @@ GpuChildThread::GpuChildThread(
   g_thread_safe_sender.Get() = thread_safe_sender();
 }
 
-GpuChildThread::~GpuChildThread() {
-  while (!deferred_messages_.empty()) {
-    delete deferred_messages_.front();
-    deferred_messages_.pop();
-  }
-}
+GpuChildThread::~GpuChildThread() {}
 
 void GpuChildThread::Shutdown() {
   ChildThreadImpl::Shutdown();
@@ -331,10 +326,9 @@ void GpuChildThread::OnInitialize(const gpu::GpuPreferences& gpu_preferences) {
   // take a significant amount of time.
   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());
-    deferred_messages_.pop();
-  }
+  for (const auto& msg : deferred_messages_)
+    Send(new GpuHostMsg_OnLogMessage(msg.severity, msg.header, msg.message));
+  deferred_messages_.clear();
 
   if (dead_on_arrival_) {
     LOG(ERROR) << "Exiting GPU process due to errors during initialization";