[scheduler] Remove blink::scheduler::TaskQueue from public API.

third_party/WebKit/Source/platform/scheduler/child/idle_helper_unittest.cc

Index: third_party/WebKit/Source/platform/scheduler/child/idle_helper_unittest.cc
diff --git a/third_party/WebKit/Source/platform/scheduler/child/idle_helper_unittest.cc b/third_party/WebKit/Source/platform/scheduler/child/idle_helper_unittest.cc
index 95f4fecb8e0ff1100019a82753f80e51a653ddf5..db533c54abd02c18463d8c51f9206a5e6f88af2a 100644
--- a/third_party/WebKit/Source/platform/scheduler/child/idle_helper_unittest.cc
+++ b/third_party/WebKit/Source/platform/scheduler/child/idle_helper_unittest.cc
@@ -13,7 +13,7 @@
 #include "base/test/simple_test_tick_clock.h"
 #include "cc/test/ordered_simple_task_runner.h"
 #include "platform/scheduler/base/real_time_domain.h"
-#include "public/platform/scheduler/base/task_queue.h"
+#include "platform/scheduler/base/task_queue.h"
 #include "platform/scheduler/base/task_queue_manager.h"
 #include "platform/scheduler/base/test_time_source.h"
 #include "platform/scheduler/child/scheduler_helper.h"
@@ -199,7 +199,7 @@ class BaseIdleHelperTest : public testing::Test {
         idle_helper_(new IdleHelperForTest(
             scheduler_helper_.get(),
             required_quiescence_duration_before_long_idle_period)),
-        default_task_runner_(scheduler_helper_->DefaultTaskRunner()),
+        default_task_runner_(scheduler_helper_->DefaultTaskQueue()),
         idle_task_runner_(idle_helper_->IdleTaskRunner()) {
     clock_->Advance(base::TimeDelta::FromMicroseconds(5000));
   }