Pass Callback to TaskRunner by value and consume it on invocation (1)

components/memory_pressure/memory_pressure_monitor_unittest.cc

Index: components/memory_pressure/memory_pressure_monitor_unittest.cc
diff --git a/components/memory_pressure/memory_pressure_monitor_unittest.cc b/components/memory_pressure/memory_pressure_monitor_unittest.cc
index 139c19e1e0b2d1e0b4a92060bc9e0eb84e529fb5..e295c8359634bfa80633b8bbc7d53376fe932c0c 100644
--- a/components/memory_pressure/memory_pressure_monitor_unittest.cc
+++ b/components/memory_pressure/memory_pressure_monitor_unittest.cc
@@ -5,6 +5,7 @@
 #include "components/memory_pressure/memory_pressure_monitor.h"
 
 #include <memory>
+#include <utility>
 
 #include "base/bind.h"
 #include "base/task_runner.h"
@@ -35,10 +36,8 @@ using testing::_;
 // counting confuses gmock.
 class LenientMockTaskRunner {
  public:
-  MOCK_METHOD3(PostDelayedTask,
-               bool(const tracked_objects::Location&,
-                    const base::Closure&,
-                    base::TimeDelta));
+  MOCK_METHOD2(PostDelayedTask,
+               bool(const tracked_objects::Location&, base::TimeDelta));
 };
 using MockTaskRunner = testing::StrictMock<LenientMockTaskRunner>;
 
@@ -49,9 +48,9 @@ class TaskRunnerProxy : public base::TaskRunner {
   explicit TaskRunnerProxy(MockTaskRunner* mock) : mock_(mock) {}
   bool RunsTasksOnCurrentThread() const override { return true; }
   bool PostDelayedTask(const tracked_objects::Location& location,
-                       const base::Closure& closure,
+                       base::Closure closure,
                        base::TimeDelta delta) override {
-    return mock_->PostDelayedTask(location, closure, delta);
+    return mock_->PostDelayedTask(location, delta);
   }
 
  private:
@@ -169,7 +168,7 @@ class MemoryPressureMonitorTest : public testing::Test {
   // Sets expectations for tasks scheduled via |mock_task_runner_|.
   void ExpectTaskPosted(int delay_ms) {
     base::TimeDelta delay = base::TimeDelta::FromMilliseconds(delay_ms);
-    EXPECT_CALL(mock_task_runner_, PostDelayedTask(_, _, delay))
+    EXPECT_CALL(mock_task_runner_, PostDelayedTask(_, delay))
         .WillOnce(testing::Return(true));
   }