Plumb activation time to main

cc/output/begin_frame_args_unittest.cc

Index: cc/output/begin_frame_args_unittest.cc
diff --git a/cc/output/begin_frame_args_unittest.cc b/cc/output/begin_frame_args_unittest.cc
index 65e0e9f66a48b79d89bc9a2811efe97ce019b193..66c4b0c5500791fa00e8854b0ca4e6f14066b3cd 100644
--- a/cc/output/begin_frame_args_unittest.cc
+++ b/cc/output/begin_frame_args_unittest.cc
@@ -97,7 +97,8 @@ TEST(BeginFrameArgsTest, Create) {
   EXPECT_TRUE(args1.on_critical_path);
 
   BeginFrameArgs args2 = BeginFrameArgs::Create(
-      BEGINFRAME_FROM_HERE, 123, 10, base::TimeTicks::FromInternalValue(1),
+      BEGINFRAME_FROM_HERE, 123, 10, BeginFrameArgs::kDefaultSourceFrameNumber,
+      base::TimeTicks::FromInternalValue(1),
       base::TimeTicks::FromInternalValue(2),
       base::TimeDelta::FromInternalValue(3), BeginFrameArgs::NORMAL);
   EXPECT_TRUE(args2.IsValid()) << args2;