Replaced TestNowSource with SimpleTestTickClock.

cc/surfaces/display_scheduler_unittest.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/surfaces/display_scheduler.h"
 
 #include "base/logging.h"
 #include "base/test/null_task_runner.h"
+#include "base/test/simple_test_tick_clock.h"
 #include "base/trace_event/trace_event.h"
 #include "cc/output/begin_frame_args.h"
 #include "cc/surfaces/display.h"
 #include "cc/test/scheduler_test_common.h"
-#include "cc/test/test_now_source.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace cc {
 namespace {
 
 class FakeDisplaySchedulerClient : public DisplaySchedulerClient {
  public:
   FakeDisplaySchedulerClient() : draw_and_swap_count_(0) {}
 
   ~FakeDisplaySchedulerClient() override {}
@@ skipping 37 matching lines @@
   int scheduler_begin_frame_deadline_count() {
     return scheduler_begin_frame_deadline_count_;
   }
 
  protected:
   int scheduler_begin_frame_deadline_count_;
 };
 
 class DisplaySchedulerTest : public testing::Test {
  public:
-  DisplaySchedulerTest() {
+  DisplaySchedulerTest() : now_src_(new base::SimpleTestTickClock()) {
     const int max_pending_swaps = 1;
-    now_src_ = TestNowSource::Create();
+    now_src_->Advance(base::TimeDelta::FromInternalValue(10000));
     null_task_runner_ = make_scoped_refptr(new base::NullTaskRunner);
     client_ = make_scoped_ptr(new FakeDisplaySchedulerClient);
     scheduler_ = make_scoped_ptr(
         new TestDisplayScheduler(client_.get(), &fake_begin_frame_source_,
                                  null_task_runner_, max_pending_swaps));
   }
 
   ~DisplaySchedulerTest() override {}
 
   void SetUp() override { scheduler_->SetRootSurfaceResourcesLocked(false); }
 
   void BeginFrameForTest() {
-    base::TimeTicks frame_time = now_src_->Now();
+    base::TimeTicks frame_time = now_src_->NowTicks();
     base::TimeDelta interval = BeginFrameArgs::DefaultInterval();
     base::TimeTicks deadline = frame_time + interval -
                                BeginFrameArgs::DefaultEstimatedParentDrawTime();
     fake_begin_frame_source_.TestOnBeginFrame(
         BeginFrameArgs::Create(BEGINFRAME_FROM_HERE, frame_time, deadline,
                                interval, BeginFrameArgs::NORMAL));
   }
 
  protected:
-  TestNowSource& now_src() { return *now_src_; }
+  base::SimpleTestTickClock& now_src() { return *now_src_; }
   FakeDisplaySchedulerClient& client() { return *client_; }
   DisplayScheduler& scheduler() { return *scheduler_; }
 
-  scoped_refptr<TestNowSource> now_src_;
+  scoped_ptr<base::SimpleTestTickClock> now_src_;
   scoped_refptr<base::NullTaskRunner> null_task_runner_;
 
   FakeBeginFrameSource fake_begin_frame_source_;
   scoped_ptr<FakeDisplaySchedulerClient> client_;
   scoped_ptr<TestDisplayScheduler> scheduler_;
 };
 
 TEST_F(DisplaySchedulerTest, EntireDisplayDamagedDrawsImmediately) {
   SurfaceId root_surface_id(1);
   BeginFrameForTest();
-  EXPECT_LT(now_src().Now(),
+  EXPECT_LT(now_src().NowTicks(),
             scheduler_->DesiredBeginFrameDeadlineTimeForTest());
   scheduler_->EntireDisplayDamaged(root_surface_id);
-  EXPECT_GE(now_src().Now(),
+  EXPECT_GE(now_src().NowTicks(),
             scheduler_->DesiredBeginFrameDeadlineTimeForTest());
 }
 
 TEST_F(DisplaySchedulerTest, SurfaceDamaged) {
   SurfaceId root_surface_id(0);
   SurfaceId sid1(1);
   SurfaceId sid2(2);
 
   // Set the root surface
   scheduler_->EntireDisplayDamaged(root_surface_id);
 
   // Get scheduler to detect surface 1 as active by drawing
   // two frames in a row with damage from surface 1.
   BeginFrameForTest();
   scheduler_->SurfaceDamaged(sid1);
   scheduler_->BeginFrameDeadlineForTest();
   BeginFrameForTest();
   scheduler_->SurfaceDamaged(sid1);
   scheduler_->BeginFrameDeadlineForTest();
 
   // Damage only from surface 2 (inactive) does not trigger deadline early.
   BeginFrameForTest();
   scheduler_->SurfaceDamaged(sid2);
-  EXPECT_LT(now_src().Now(),
+  EXPECT_LT(now_src().NowTicks(),
             scheduler_->DesiredBeginFrameDeadlineTimeForTest());
 
   // Damage from surface 1 triggers deadline early.
   scheduler_->SurfaceDamaged(sid1);
-  EXPECT_GE(now_src().Now(),
+  EXPECT_GE(now_src().NowTicks(),
             scheduler_->DesiredBeginFrameDeadlineTimeForTest());
   scheduler_->BeginFrameDeadlineForTest();
 
   // Make both surface 1 and 2 active.
   BeginFrameForTest();
   scheduler_->SurfaceDamaged(sid2);
   scheduler_->SurfaceDamaged(sid1);
   scheduler_->BeginFrameDeadlineForTest();
 
   // Deadline doesn't trigger early until surface 1 and 2 are both damaged.
   BeginFrameForTest();
-  EXPECT_LT(now_src().Now(),
+  EXPECT_LT(now_src().NowTicks(),
             scheduler_->DesiredBeginFrameDeadlineTimeForTest());
   scheduler_->SurfaceDamaged(sid1);
-  EXPECT_LT(now_src().Now(),
+  EXPECT_LT(now_src().NowTicks(),
             scheduler_->DesiredBeginFrameDeadlineTimeForTest());
   scheduler_->SurfaceDamaged(sid2);
-  EXPECT_GE(now_src().Now(),
+  EXPECT_GE(now_src().NowTicks(),
             scheduler_->DesiredBeginFrameDeadlineTimeForTest());
   scheduler_->BeginFrameDeadlineForTest();
 
   // Make the system idle
   BeginFrameForTest();
   scheduler_->BeginFrameDeadlineForTest();
   BeginFrameForTest();
   scheduler_->BeginFrameDeadlineForTest();
 
   // Deadline should trigger early if child surfaces are idle and
   // we get damage on the root surface.
   BeginFrameForTest();
-  EXPECT_LT(now_src().Now(),
+  EXPECT_LT(now_src().NowTicks(),
             scheduler_->DesiredBeginFrameDeadlineTimeForTest());
   scheduler_->SurfaceDamaged(root_surface_id);
-  EXPECT_GE(now_src().Now(),
+  EXPECT_GE(now_src().NowTicks(),
             scheduler_->DesiredBeginFrameDeadlineTimeForTest());
   scheduler_->BeginFrameDeadlineForTest();
 }
 
 TEST_F(DisplaySchedulerTest, OutputSurfaceLost) {
   SurfaceId sid1(1);
 
   // DrawAndSwap normally.
   BeginFrameForTest();
-  EXPECT_LT(now_src().Now(),
+  EXPECT_LT(now_src().NowTicks(),
             scheduler_->DesiredBeginFrameDeadlineTimeForTest());
   EXPECT_EQ(0, client_->draw_and_swap_count());
   scheduler_->SurfaceDamaged(sid1);
   scheduler_->BeginFrameDeadlineForTest();
   EXPECT_EQ(1, client_->draw_and_swap_count());
 
   // Deadline triggers immediately on OutputSurfaceLost.
   BeginFrameForTest();
-  EXPECT_LT(now_src().Now(),
+  EXPECT_LT(now_src().NowTicks(),
             scheduler_->DesiredBeginFrameDeadlineTimeForTest());
   scheduler_->OutputSurfaceLost();
-  EXPECT_GE(now_src().Now(),
+  EXPECT_GE(now_src().NowTicks(),
             scheduler_->DesiredBeginFrameDeadlineTimeForTest());
 
   // Deadline does not DrawAndSwap after OutputSurfaceLost.
   EXPECT_EQ(1, client_->draw_and_swap_count());
   scheduler_->SurfaceDamaged(sid1);
   scheduler_->BeginFrameDeadlineForTest();
   EXPECT_EQ(1, client_->draw_and_swap_count());
 }
 
 TEST_F(DisplaySchedulerTest, RootSurfaceResourcesLocked) {
   SurfaceId sid1(1);
   base::TimeTicks late_deadline;
 
   // DrawAndSwap normally.
   BeginFrameForTest();
-  EXPECT_LT(now_src().Now(),
+  EXPECT_LT(now_src().NowTicks(),
             scheduler_->DesiredBeginFrameDeadlineTimeForTest());
   EXPECT_EQ(0, client_->draw_and_swap_count());
   scheduler_->SurfaceDamaged(sid1);
   scheduler_->BeginFrameDeadlineForTest();
   EXPECT_EQ(1, client_->draw_and_swap_count());
 
   // Deadline triggers late while root resources are locked.
-  late_deadline = now_src().Now() + BeginFrameArgs::DefaultInterval();
+  late_deadline = now_src().NowTicks() + BeginFrameArgs::DefaultInterval();
   BeginFrameForTest();
   scheduler_->SurfaceDamaged(sid1);
   EXPECT_GT(late_deadline, scheduler_->DesiredBeginFrameDeadlineTimeForTest());
   scheduler_->SetRootSurfaceResourcesLocked(true);
   EXPECT_EQ(late_deadline, scheduler_->DesiredBeginFrameDeadlineTimeForTest());
 
   // Deadline does not DrawAndSwap while root resources are locked.
   EXPECT_EQ(1, client_->draw_and_swap_count());
   scheduler_->SurfaceDamaged(sid1);
   scheduler_->BeginFrameDeadlineForTest();
   EXPECT_EQ(1, client_->draw_and_swap_count());
 
   //  Deadline triggers normally when root resources are unlocked.
-  late_deadline = now_src().Now() + BeginFrameArgs::DefaultInterval();
+  late_deadline = now_src().NowTicks() + BeginFrameArgs::DefaultInterval();
   BeginFrameForTest();
   scheduler_->SurfaceDamaged(sid1);
   EXPECT_EQ(late_deadline, scheduler_->DesiredBeginFrameDeadlineTimeForTest());
   scheduler_->SetRootSurfaceResourcesLocked(false);
   EXPECT_EQ(base::TimeTicks(),
             scheduler_->DesiredBeginFrameDeadlineTimeForTest());
 
   EXPECT_EQ(1, client_->draw_and_swap_count());
   scheduler_->BeginFrameDeadlineForTest();
   EXPECT_EQ(2, client_->draw_and_swap_count());
 }
 
 TEST_F(DisplaySchedulerTest, DidSwapBuffers) {
   SurfaceId sid1(1);
   SurfaceId sid2(2);
   base::TimeTicks late_deadline;
 
   // Get scheduler to detect surface 1 and 2 as active.
   BeginFrameForTest();
   scheduler_->SurfaceDamaged(sid1);
   scheduler_->SurfaceDamaged(sid2);
   scheduler_->BeginFrameDeadlineForTest();
   BeginFrameForTest();
   scheduler_->SurfaceDamaged(sid1);
   scheduler_->SurfaceDamaged(sid2);
   scheduler_->BeginFrameDeadlineForTest();
 
   // DrawAndSwap normally.
   BeginFrameForTest();
-  EXPECT_LT(now_src().Now(),
+  EXPECT_LT(now_src().NowTicks(),
             scheduler_->DesiredBeginFrameDeadlineTimeForTest());
   EXPECT_EQ(2, client_->draw_and_swap_count());
   scheduler_->SurfaceDamaged(sid1);
   scheduler_->SurfaceDamaged(sid2);
   scheduler_->BeginFrameDeadlineForTest();
   EXPECT_EQ(3, client_->draw_and_swap_count());
   scheduler_->DidSwapBuffers();
 
   // Deadline triggers early when swap throttled.
   BeginFrameForTest();
   // Damage surface 1, but not surface 2 so we avoid triggering deadline
   // early because all surfaces are ready.
   scheduler_->SurfaceDamaged(sid1);
   EXPECT_EQ(scheduler_->DesiredBeginFrameDeadlineTimeForTest(),
             base::TimeTicks());
 
   // Don't draw and swap in deadline while swap throttled.
   EXPECT_EQ(3, client_->draw_and_swap_count());
   scheduler_->BeginFrameDeadlineForTest();
   EXPECT_EQ(3, client_->draw_and_swap_count());
 
   // Deadline triggers normally once not swap throttled.
   // Damage from previous BeginFrame should cary over, so don't damage again.
-  late_deadline = now_src().Now() + BeginFrameArgs::DefaultInterval();
+  late_deadline = now_src().NowTicks() + BeginFrameArgs::DefaultInterval();
   scheduler_->DidSwapBuffersComplete();
   BeginFrameForTest();
   EXPECT_GT(scheduler_->DesiredBeginFrameDeadlineTimeForTest(),
-            now_src().Now());
+            now_src().NowTicks());
   EXPECT_LT(scheduler_->DesiredBeginFrameDeadlineTimeForTest(), late_deadline);
   // Still waiting for surface 2. Once it updates, deadline should trigger
   // immediately again.
   scheduler_->SurfaceDamaged(sid2);
   EXPECT_EQ(scheduler_->DesiredBeginFrameDeadlineTimeForTest(),
             base::TimeTicks());
   // Draw and swap now that we aren't throttled.
   EXPECT_EQ(3, client_->draw_and_swap_count());
   scheduler_->BeginFrameDeadlineForTest();
   EXPECT_EQ(4, client_->draw_and_swap_count());
@@ skipping 26 matching lines @@
 
   scheduler_->SetRootSurfaceResourcesLocked(true);
   EXPECT_EQ(count++, scheduler_->scheduler_begin_frame_deadline_count());
 
   scheduler_->OutputSurfaceLost();
   EXPECT_EQ(count++, scheduler_->scheduler_begin_frame_deadline_count());
 }
 
 }  // namespace
 }  // namespace cc