cc: Add BeginFrameArgs

cc/scheduler/scheduler_state_machine.cc

Index: cc/scheduler/scheduler_state_machine.cc
diff --git a/cc/scheduler/scheduler_state_machine.cc b/cc/scheduler/scheduler_state_machine.cc
index fda6e6b5881526c1757cb742fbf24eabfe010632..3bfba3ccf0bef972b3fbddbd5c2834b3afedbe0b 100644
--- a/cc/scheduler/scheduler_state_machine.cc
+++ b/cc/scheduler/scheduler_state_machine.cc
@@ -29,6 +29,7 @@ SchedulerStateMachine::SchedulerStateMachine(const SchedulerSettings& settings)
       expect_immediate_begin_frame_for_main_thread_(false),
       main_thread_needs_layer_textures_(false),
       inside_begin_frame_(false),
+      last_begin_frame_args_(BeginFrameArgs::CreateInvalid()),
       visible_(false),
       can_start_(false),
       can_draw_(false),
@@ -84,7 +85,12 @@ std::string SchedulerStateMachine::ToString() {
   base::StringAppendF(&str, "inside_begin_frame_ = %d; ",
       inside_begin_frame_);
   base::StringAppendF(&str, "last_frame_time_ = %"PRId64"; ",
-      (last_frame_time_ - base::TimeTicks()).InMilliseconds());
+      (last_begin_frame_args_.frame_time() - base::TimeTicks())
+          .InMilliseconds());
+  base::StringAppendF(&str, "last_deadline_ = %"PRId64"; ",
+      (last_begin_frame_args_.deadline() - base::TimeTicks()).InMilliseconds());
+  base::StringAppendF(&str, "last_interval_ = %"PRId64"; ",
+      last_begin_frame_args_.interval().InMilliseconds());
   base::StringAppendF(&str, "visible_ = %d; ", visible_);
   base::StringAppendF(&str, "can_start_ = %d; ", can_start_);
   base::StringAppendF(&str, "can_draw_ = %d; ", can_draw_);
@@ -362,12 +368,9 @@ bool SchedulerStateMachine::BeginFrameNeededByImplThread() const {
          output_surface_state_ == OUTPUT_SURFACE_ACTIVE;
 }
 
-void SchedulerStateMachine::DidEnterBeginFrame() {
+void SchedulerStateMachine::DidEnterBeginFrame(BeginFrameArgs args) {
   inside_begin_frame_ = true;
-}
-
-void SchedulerStateMachine::SetFrameTime(base::TimeTicks frame_time) {
-  last_frame_time_ = frame_time;
+  last_begin_frame_args_ = args;
 }
 
 void SchedulerStateMachine::DidLeaveBeginFrame() {