Revert "Fix data view accessors to throw execptions on offsets bigger than size_t."

src/v8conversions.h

Index: src/v8conversions.h
diff --git a/src/v8conversions.h b/src/v8conversions.h
index 17c05065180996b6a51a478daf3d14c0e4dcdd2b..d3da9f8bb86db798e9ca5ad017a197b7bd5240d0 100644
--- a/src/v8conversions.h
+++ b/src/v8conversions.h
@@ -55,39 +55,26 @@ double StringToDouble(UnicodeCache* unicode_cache,
 // Converts a string into an integer.
 double StringToInt(UnicodeCache* unicode_cache, String* str, int radix);
 
-inline bool TryNumberToSize(Isolate* isolate,
-                            Object* number, size_t* result) {
+// Converts a number into size_t.
+inline size_t NumberToSize(Isolate* isolate,
+                           Object* number) {
   SealHandleScope shs(isolate);
   if (number->IsSmi()) {
     int value = Smi::cast(number)->value();
-    ASSERT(Smi::kMaxValue <= std::numeric_limits<size_t>::max());
-    if (value >= 0) {
-      *result = static_cast<size_t>(value);
-      return true;
-    }
-    return false;
+    CHECK_GE(value, 0);
+    ASSERT(
+      static_cast<unsigned>(Smi::kMaxValue)
+        <= std::numeric_limits<size_t>::max());
+    return static_cast<size_t>(value);
   } else {
     ASSERT(number->IsHeapNumber());
     double value = HeapNumber::cast(number)->value();
-    if (value >= 0 &&
-        value <= std::numeric_limits<size_t>::max()) {
-      *result = static_cast<size_t>(value);
-      return true;
-    } else {
-      return false;
-    }
+    CHECK(value >= 0 &&
+          value <= std::numeric_limits<size_t>::max());
+    return static_cast<size_t>(value);
   }
 }
 
-// Converts a number into size_t.
-inline size_t NumberToSize(Isolate* isolate,
-                           Object* number) {
-  size_t result;
-  bool is_valid = TryNumberToSize(isolate, number, &result);
-  CHECK(is_valid);
-  return result;
-}
-
 } }  // namespace v8::internal
 
 #endif  // V8_V8CONVERSIONS_H_