Nuke WebPassOwnPtr<T> and replace it with std::unique_ptr<T>.

components/scheduler/renderer/renderer_web_scheduler_impl.cc

Index: components/scheduler/renderer/renderer_web_scheduler_impl.cc
diff --git a/components/scheduler/renderer/renderer_web_scheduler_impl.cc b/components/scheduler/renderer/renderer_web_scheduler_impl.cc
index 4faa08173e2bb1cf11d241fb8cadba5622e41235..cb837b37fcbf4c6d67f6e76c8ae4d42e10a5e748 100644
--- a/components/scheduler/renderer/renderer_web_scheduler_impl.cc
+++ b/components/scheduler/renderer/renderer_web_scheduler_impl.cc
@@ -4,12 +4,14 @@
 
 #include "components/scheduler/renderer/renderer_web_scheduler_impl.h"
 
+#include <memory>
+
 #include "base/command_line.h"
+#include "base/memory/ptr_util.h"
 #include "components/scheduler/base/task_queue.h"
 #include "components/scheduler/common/scheduler_switches.h"
 #include "components/scheduler/renderer/renderer_scheduler_impl.h"
 #include "components/scheduler/renderer/web_view_scheduler_impl.h"
-#include "third_party/WebKit/public/platform/WebPassOwnPtr.h"
 
 namespace scheduler {
 
@@ -32,10 +34,10 @@ void RendererWebSchedulerImpl::resumeTimerQueue() {
   renderer_scheduler_->ResumeTimerQueue();
 }
 
-blink::WebPassOwnPtr<blink::WebViewScheduler>
+std::unique_ptr<blink::WebViewScheduler>
 RendererWebSchedulerImpl::createWebViewScheduler(blink::WebView* web_view) {
   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
-  return blink::adoptWebPtr(new WebViewSchedulerImpl(
+  return base::WrapUnique(new WebViewSchedulerImpl(
       web_view, renderer_scheduler_,
       command_line->HasSwitch(switches::kDisableBackgroundTimerThrottling)));
 }