Throw exception on invalid string length instead of OOM.

src/uri.h

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 246 matching lines @@
         escaped_length += 6;
       } else if (IsNotEscaped(c)) {
         escaped_length++;
       } else {
         escaped_length += 3;
       }
 
       // We don't allow strings that are longer than a maximal length.
       ASSERT(String::kMaxLength < 0x7fffffff - 6);  // Cannot overflow.
       if (escaped_length > String::kMaxLength) {
-        isolate->context()->mark_out_of_memory();
+        AllowHeapAllocation allocate_error_and_return;
+        isolate->ThrowInvalidStringLength();
         return Handle<String>::null();
       }
     }
   }
 
   // No length change implies no change.  Return original string if no change.
   if (escaped_length == length) return string;
 
   Handle<SeqOneByteString> dest =
       isolate->factory()->NewRawOneByteString(escaped_length);
@@ skipping 22 matching lines @@
       }
     }
   }
 
   return dest;
 }
 
 } }  // namespace v8::internal
 
 #endif  // V8_URI_H_