Replace ASSERT with DCHECK in core/svg/

third_party/WebKit/Source/core/svg/SVGTextContentElement.cpp

Index: third_party/WebKit/Source/core/svg/SVGTextContentElement.cpp
diff --git a/third_party/WebKit/Source/core/svg/SVGTextContentElement.cpp b/third_party/WebKit/Source/core/svg/SVGTextContentElement.cpp
index aca2e19f769bf77b34e33ec2ca1ad17c165a2784..a34a32e6bbee3029ebeb5235e66ec4411363284a 100644
--- a/third_party/WebKit/Source/core/svg/SVGTextContentElement.cpp
+++ b/third_party/WebKit/Source/core/svg/SVGTextContentElement.cpp
@@ -212,7 +212,7 @@ void SVGTextContentElement::selectSubString(unsigned charnum,
   if (nchars > numberOfChars - charnum)
     nchars = numberOfChars - charnum;
 
-  ASSERT(document().frame());
+  DCHECK(document().frame());
 
   // Find selection start
   VisiblePosition start = VisiblePosition::firstPositionInNode(
@@ -296,7 +296,7 @@ SVGTextContentElement* SVGTextContentElement::elementFromLineLayoutItem(
     return nullptr;
 
   SVGElement* element = toSVGElement(lineLayoutItem.node());
-  ASSERT(element);
+  DCHECK(element);
   return isSVGTextContentElement(*element) ? toSVGTextContentElement(element)
                                            : 0;
 }