Replace ASSERT, ASSERT_NOT_REACHED, and RELEASE_ASSERT in core/css/

third_party/WebKit/Source/core/css/CSSPaintImageGenerator.cpp

Index: third_party/WebKit/Source/core/css/CSSPaintImageGenerator.cpp
diff --git a/third_party/WebKit/Source/core/css/CSSPaintImageGenerator.cpp b/third_party/WebKit/Source/core/css/CSSPaintImageGenerator.cpp
index cab9792a612da0d4738d8de18b2452e24780ebc5..4fb80a738d0f6742bf01f6469cff3be479d6d30e 100644
--- a/third_party/WebKit/Source/core/css/CSSPaintImageGenerator.cpp
+++ b/third_party/WebKit/Source/core/css/CSSPaintImageGenerator.cpp
@@ -16,7 +16,7 @@ CSSPaintImageGenerator::CSSPaintImageGeneratorCreateFunction s_createFunction =
 // static
 void CSSPaintImageGenerator::init(
     CSSPaintImageGeneratorCreateFunction createFunction) {
-  ASSERT(!s_createFunction);
+  DCHECK(!s_createFunction);
   s_createFunction = createFunction;
 }
 
@@ -24,7 +24,7 @@ void CSSPaintImageGenerator::init(
 CSSPaintImageGenerator* CSSPaintImageGenerator::create(const String& name,
                                                        Document& document,
                                                        Observer* observer) {
-  ASSERT(s_createFunction);
+  DCHECK(s_createFunction);
   return s_createFunction(name, document, observer);
 }