Replace all occurrences of RELEASE_ASSERT in wtf with CHECK.

third_party/WebKit/Source/wtf/text/AtomicString.cpp

Index: third_party/WebKit/Source/wtf/text/AtomicString.cpp
diff --git a/third_party/WebKit/Source/wtf/text/AtomicString.cpp b/third_party/WebKit/Source/wtf/text/AtomicString.cpp
index 2885ad1be673344508dd790079d17c19905bf23c..58471cdce426e346344247d710b6e9ed81d2e2e3 100644
--- a/third_party/WebKit/Source/wtf/text/AtomicString.cpp
+++ b/third_party/WebKit/Source/wtf/text/AtomicString.cpp
@@ -445,7 +445,7 @@ void AtomicString::remove(StringImpl* r)
         iterator = findString<LChar>(r);
     else
         iterator = findString<UChar>(r);
-    RELEASE_ASSERT(iterator != atomicStrings().end());
+    CHECK(iterator != atomicStrings().end());
     atomicStrings().remove(iterator);
 }