Replace ASSERT with DCHECK in modules/fetch.

third_party/WebKit/Source/modules/fetch/Headers.cpp

Index: third_party/WebKit/Source/modules/fetch/Headers.cpp
diff --git a/third_party/WebKit/Source/modules/fetch/Headers.cpp b/third_party/WebKit/Source/modules/fetch/Headers.cpp
index 0b2b43392e82096c0f1a494c59ff116825db99d5..05ef64aa82bdfcc4057818929168ac0b19f0d135 100644
--- a/third_party/WebKit/Source/modules/fetch/Headers.cpp
+++ b/third_party/WebKit/Source/modules/fetch/Headers.cpp
@@ -250,7 +250,7 @@ void Headers::set(const String& name,
 }
 
 void Headers::fillWith(const Headers* object, ExceptionState& exceptionState) {
-  ASSERT(m_headerList->size() == 0);
+  DCHECK(m_headerList->size() == 0);

[tkent, 2017/04/08 02:29:54]

Use DCHECK_EQ.

   // "To fill a Headers object (|this|) with a given object (|object|), run
   // these steps:"
   // "1. If |object| is a Headers object, copy its header list as
@@ -267,7 +267,7 @@ void Headers::fillWith(const Headers* object, ExceptionState& exceptionState) {
 
 void Headers::fillWith(const Vector<Vector<String>>& object,
                        ExceptionState& exceptionState) {
-  ASSERT(!m_headerList->size());
+  DCHECK(!m_headerList->size());
   // "2. Otherwise, if |object| is a sequence, then for each |header| in
   //     |object|, run these substeps:
   //    1. If |header| does not contain exactly two items, throw a
@@ -287,7 +287,7 @@ void Headers::fillWith(const Vector<Vector<String>>& object,
 
 void Headers::fillWith(const Dictionary& object,
                        ExceptionState& exceptionState) {
-  ASSERT(!m_headerList->size());
+  DCHECK(!m_headerList->size());
   const Vector<String>& keys = object.getPropertyNames(exceptionState);
   if (exceptionState.hadException() || !keys.size())
     return;