Move platform abstraction to base library

src/libplatform/task-queue.cc

Index: src/libplatform/task-queue.cc
diff --git a/src/libplatform/task-queue.cc b/src/libplatform/task-queue.cc
index e618cb70b009287a04193adff6dd507dded2cdec..a5d08f1a14dbc9b1bb62f45d631219cccf0ab5cd 100644
--- a/src/libplatform/task-queue.cc
+++ b/src/libplatform/task-queue.cc
@@ -4,8 +4,7 @@
 
 #include "src/libplatform/task-queue.h"
 
-// TODO(jochen): We should have our own version of checks.h.
-#include "src/checks.h"
+#include "src/base/logging.h"
 
 namespace v8 {
 namespace internal {
@@ -14,14 +13,14 @@ TaskQueue::TaskQueue() : process_queue_semaphore_(0), terminated_(false) {}
 
 
 TaskQueue::~TaskQueue() {
-  LockGuard<Mutex> guard(&lock_);
+  base::LockGuard<base::Mutex> guard(&lock_);
   ASSERT(terminated_);
   ASSERT(task_queue_.empty());
 }
 
 
 void TaskQueue::Append(Task* task) {
-  LockGuard<Mutex> guard(&lock_);
+  base::LockGuard<base::Mutex> guard(&lock_);
   ASSERT(!terminated_);
   task_queue_.push(task);
   process_queue_semaphore_.Signal();
@@ -31,7 +30,7 @@ void TaskQueue::Append(Task* task) {
 Task* TaskQueue::GetNext() {
   for (;;) {
     {
-      LockGuard<Mutex> guard(&lock_);
+      base::LockGuard<base::Mutex> guard(&lock_);
       if (!task_queue_.empty()) {
         Task* result = task_queue_.front();
         task_queue_.pop();
@@ -48,7 +47,7 @@ Task* TaskQueue::GetNext() {
 
 
 void TaskQueue::Terminate() {
-  LockGuard<Mutex> guard(&lock_);
+  base::LockGuard<base::Mutex> guard(&lock_);
   ASSERT(!terminated_);
   terminated_ = true;
   process_queue_semaphore_.Signal();