Replace ASSERT with DCHECK in modules/accessibility

third_party/WebKit/Source/modules/accessibility/AXSpinButton.cpp

Index: third_party/WebKit/Source/modules/accessibility/AXSpinButton.cpp
diff --git a/third_party/WebKit/Source/modules/accessibility/AXSpinButton.cpp b/third_party/WebKit/Source/modules/accessibility/AXSpinButton.cpp
index 89405eca5a7e6b76a06320993a00296a8919984f..46207b2e8b0b9b4accac4757e757165d4d7c1af6 100644
--- a/third_party/WebKit/Source/modules/accessibility/AXSpinButton.cpp
+++ b/third_party/WebKit/Source/modules/accessibility/AXSpinButton.cpp
@@ -38,7 +38,7 @@ AXSpinButton::AXSpinButton(AXObjectCacheImpl& axObjectCache)
     : AXMockObject(axObjectCache), m_spinButtonElement(nullptr) {}
 
 AXSpinButton::~AXSpinButton() {
-  ASSERT(!m_spinButtonElement);
+  DCHECK(!m_spinButtonElement);
 }
 
 DEFINE_TRACE(AXSpinButton) {
@@ -68,7 +68,7 @@ AccessibilityRole AXSpinButton::roleValue() const {
 }
 
 void AXSpinButton::addChildren() {
-  ASSERT(!isDetached());
+  DCHECK(!isDetached());
   m_haveChildren = true;
 
   AXSpinButtonPart* incrementor =
@@ -85,7 +85,7 @@ void AXSpinButton::addChildren() {
 }
 
 void AXSpinButton::step(int amount) {
-  ASSERT(m_spinButtonElement);
+  DCHECK(m_spinButtonElement);
   if (!m_spinButtonElement)
     return;