diff --git a/fpdfsdk/fpdfxfa/cxfa_fwladaptertimermgr.cpp b/fpdfsdk/fpdfxfa/cxfa_fwladaptertimermgr.cpp
index 769401e..36c8b03 100644
--- a/fpdfsdk/fpdfxfa/cxfa_fwladaptertimermgr.cpp
+++ b/fpdfsdk/fpdfxfa/cxfa_fwladaptertimermgr.cpp
@@ -50,8 +50,7 @@
 CXFA_FWLAdapterTimerMgr::~CXFA_FWLAdapterTimerMgr() = default;
 
 CFWL_TimerInfo* CXFA_FWLAdapterTimerMgr::Start(CFWL_Timer* pTimer,
-                                               uint32_t dwElapse,
-                                               bool bImmediately) {
+                                               uint32_t dwElapse) {
   if (!g_TimerArray)
     g_TimerArray = new std::vector<std::unique_ptr<CFWL_TimerInfo>>;
 
diff --git a/fpdfsdk/fpdfxfa/cxfa_fwladaptertimermgr.h b/fpdfsdk/fpdfxfa/cxfa_fwladaptertimermgr.h
index 3c477b8..f8aaeca 100644
--- a/fpdfsdk/fpdfxfa/cxfa_fwladaptertimermgr.h
+++ b/fpdfsdk/fpdfxfa/cxfa_fwladaptertimermgr.h
@@ -19,9 +19,7 @@
   explicit CXFA_FWLAdapterTimerMgr(TimerHandlerIface* pTimerHandler);
   ~CXFA_FWLAdapterTimerMgr() override;
 
-  CFWL_TimerInfo* Start(CFWL_Timer* pTimer,
-                        uint32_t dwElapse,
-                        bool bImmediately) override;
+  CFWL_TimerInfo* Start(CFWL_Timer* pTimer, uint32_t dwElapse) override;
   void Stop(CFWL_TimerInfo* pTimerInfo) override;
 
  private:
diff --git a/xfa/fwl/cfwl_caret.cpp b/xfa/fwl/cfwl_caret.cpp
index 9380f9e..4dfcb02 100644
--- a/xfa/fwl/cfwl_caret.cpp
+++ b/xfa/fwl/cfwl_caret.cpp
@@ -63,7 +63,7 @@
     pOldTimerInfo->StopTimer();
   }
 
-  m_pTimerInfo = m_pTimer->StartTimer(kBlinkPeriodMs, true);
+  m_pTimerInfo = m_pTimer->StartTimer(kBlinkPeriodMs);
   RemoveStates(FWL_WGTSTATE_Invisible);
   SetStates(kStateHighlight);
 }
diff --git a/xfa/fwl/cfwl_scrollbar.cpp b/xfa/fwl/cfwl_scrollbar.cpp
index 9c9eec1..dc911f2 100644
--- a/xfa/fwl/cfwl_scrollbar.cpp
+++ b/xfa/fwl/cfwl_scrollbar.cpp
@@ -357,7 +357,7 @@
     DoMouseDown(4, m_rtMaxTrack, m_iMaxTrackState, point);
 
   if (!SendEvent())
-    m_pTimerInfo = m_Timer.StartTimer(FWL_SCROLLBAR_Elapse, true);
+    m_pTimerInfo = m_Timer.StartTimer(FWL_SCROLLBAR_Elapse);
 }
 
 void CFWL_ScrollBar::OnLButtonUp(const CFX_PointF& point) {
@@ -472,5 +472,5 @@
   }
 
   if (!pScrollBar->SendEvent())
-    pScrollBar->m_pTimerInfo = StartTimer(0, true);
+    pScrollBar->m_pTimerInfo = StartTimer(0);
 }
diff --git a/xfa/fwl/cfwl_timer.cpp b/xfa/fwl/cfwl_timer.cpp
index 8e82834..fd35e06 100644
--- a/xfa/fwl/cfwl_timer.cpp
+++ b/xfa/fwl/cfwl_timer.cpp
@@ -15,7 +15,7 @@
 
 CFWL_Timer::~CFWL_Timer() {}
 
-CFWL_TimerInfo* CFWL_Timer::StartTimer(uint32_t dwElapse, bool bImmediately) {
+CFWL_TimerInfo* CFWL_Timer::StartTimer(uint32_t dwElapse) {
   CFWL_App::AdapterIface* pAdapterNative =
       m_pWidget->GetOwnerApp()->GetAdapterNative();
   if (!pAdapterNative)
@@ -27,5 +27,5 @@
   if (!m_pAdapterTimerMgr)
     return nullptr;
 
-  return m_pAdapterTimerMgr->Start(this, dwElapse, bImmediately);
+  return m_pAdapterTimerMgr->Start(this, dwElapse);
 }
diff --git a/xfa/fwl/cfwl_timer.h b/xfa/fwl/cfwl_timer.h
index 586c2f3..49a1328 100644
--- a/xfa/fwl/cfwl_timer.h
+++ b/xfa/fwl/cfwl_timer.h
@@ -22,7 +22,7 @@
   virtual ~CFWL_Timer();
 
   virtual void Run(CFWL_TimerInfo* hTimer) = 0;
-  CFWL_TimerInfo* StartTimer(uint32_t dwElapse, bool bImmediately);
+  CFWL_TimerInfo* StartTimer(uint32_t dwElapse);
 
  protected:
   UnownedPtr<CFWL_Widget> m_pWidget;
diff --git a/xfa/fwl/ifwl_adaptertimermgr.h b/xfa/fwl/ifwl_adaptertimermgr.h
index afa87c4..106de53 100644
--- a/xfa/fwl/ifwl_adaptertimermgr.h
+++ b/xfa/fwl/ifwl_adaptertimermgr.h
@@ -13,9 +13,7 @@
  public:
   virtual ~IFWL_AdapterTimerMgr() = default;
 
-  virtual CFWL_TimerInfo* Start(CFWL_Timer* pTimer,
-                                uint32_t dwElapse,
-                                bool bImmediately) = 0;
+  virtual CFWL_TimerInfo* Start(CFWL_Timer* pTimer, uint32_t dwElapse) = 0;
   virtual void Stop(CFWL_TimerInfo* pTimerInfo) = 0;
 };