Change ProcessThread's task type to be the one from TaskQueue.

webrtc/modules/utility/source/process_thread_impl.cc

Index: webrtc/modules/utility/source/process_thread_impl.cc
diff --git a/webrtc/modules/utility/source/process_thread_impl.cc b/webrtc/modules/utility/source/process_thread_impl.cc
index 4e3606ca08f6d24d973bcaaa16b0cf0c7a3473f7..66534dedeab0785d5bcddf304faabbe9b5dc3c21 100644
--- a/webrtc/modules/utility/source/process_thread_impl.cc
+++ b/webrtc/modules/utility/source/process_thread_impl.cc
@@ -11,6 +11,7 @@
 #include "webrtc/modules/utility/source/process_thread_impl.h"
 
 #include "webrtc/base/checks.h"
+#include "webrtc/base/task_queue.h"
 #include "webrtc/base/timeutils.h"
 #include "webrtc/modules/include/module.h"
 #include "webrtc/system_wrappers/include/logging.h"
@@ -119,7 +120,7 @@ void ProcessThreadImpl::WakeUp(Module* module) {
   wake_up_->Set();
 }
 
-void ProcessThreadImpl::PostTask(std::unique_ptr<ProcessTask> task) {
+void ProcessThreadImpl::PostTask(std::unique_ptr<rtc::QueuedTask> task) {
   // Allowed to be called on any thread.
   {
     rtc::CritScope lock(&lock_);
@@ -218,7 +219,7 @@ bool ProcessThreadImpl::Process() {
     }
 
     while (!queue_.empty()) {
-      ProcessTask* task = queue_.front();
+      rtc::QueuedTask* task = queue_.front();
       queue_.pop();
       lock_.Leave();
       task->Run();