cc: Make animations tick regardless of drawing.

cc/scheduler/scheduler_state_machine_unittest.cc

 // Copyright 2011 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/scheduler/scheduler_state_machine.h"
 
 #include "cc/scheduler/scheduler.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace cc {
@@ skipping 1059 matching lines @@
 
   state.DidEnterVSync();
   EXPECT_EQ(SchedulerStateMachine::ACTION_NONE, state.NextAction());
   state.SetNeedsForcedRedraw(true);
   EXPECT_EQ(SchedulerStateMachine::ACTION_DRAW_FORCED, state.NextAction());
   state.UpdateState(state.NextAction());
   state.DidDrawIfPossibleCompleted(true);
   state.DidLeaveVSync();
 }
 
+TEST(SchedulerStateMachineTest, ReportIfNotDrawing) {
+  SchedulerSettings default_scheduler_settings;
+  SchedulerStateMachine state(default_scheduler_settings);
+
+  state.SetCanDraw(true);
+  state.SetVisible(true);
+  EXPECT_FALSE(state.DrawSuspendedUntilCommit());
+
+  state.SetCanDraw(false);
+  state.SetVisible(true);
+  EXPECT_TRUE(state.DrawSuspendedUntilCommit());
+
+  state.SetCanDraw(true);
+  state.SetVisible(false);
+  EXPECT_TRUE(state.DrawSuspendedUntilCommit());
+
+  state.SetCanDraw(false);
+  state.SetVisible(false);
+  EXPECT_TRUE(state.DrawSuspendedUntilCommit());
+
+  state.SetCanDraw(true);
+  state.SetVisible(true);
+  EXPECT_FALSE(state.DrawSuspendedUntilCommit());
+}
+
+TEST(SchedulerStateMachineTest, ReportIfNotDrawingFromAcquiredTextures) {
+  SchedulerSettings default_scheduler_settings;
+  SchedulerStateMachine state(default_scheduler_settings);
+  state.SetCanBeginFrame(true);
+  state.SetCanDraw(true);
+  state.SetVisible(true);
+  EXPECT_FALSE(state.DrawSuspendedUntilCommit());
+
+  state.SetMainThreadNeedsLayerTextures();
+  EXPECT_EQ(
+      SchedulerStateMachine::ACTION_ACQUIRE_LAYER_TEXTURES_FOR_MAIN_THREAD,
+      state.NextAction());
+  state.UpdateState(state.NextAction());
+  EXPECT_TRUE(state.DrawSuspendedUntilCommit());
+
+  EXPECT_EQ(SchedulerStateMachine::ACTION_BEGIN_FRAME, state.NextAction());
+
+  state.UpdateState(state.NextAction());
+  EXPECT_TRUE(state.DrawSuspendedUntilCommit());
+
+  EXPECT_EQ(SchedulerStateMachine::ACTION_NONE, state.NextAction());
+
+  state.BeginFrameComplete();
+  EXPECT_TRUE(state.DrawSuspendedUntilCommit());
+
+  EXPECT_EQ(SchedulerStateMachine::ACTION_COMMIT, state.NextAction());
+
+  state.UpdateState(state.NextAction());
+  EXPECT_FALSE(state.DrawSuspendedUntilCommit());
+}
+
 }  // namespace
 }  // namespace cc