Adds option for JSON reader to allow invalid utf characters

base/values.cc

Index: base/values.cc
diff --git a/base/values.cc b/base/values.cc
index f00a03f8d3097896b7176052368cfdbb7fbfb8dd..407f9c5edcc55c28dc84436941f55f74a18fd3d2 100644
--- a/base/values.cc
+++ b/base/values.cc
@@ -253,7 +253,8 @@ bool FundamentalValue::Equals(const Value* other) const {
 
 StringValue::StringValue(StringPiece in_value)
     : Value(TYPE_STRING), value_(in_value.as_string()) {
-  DCHECK(IsStringUTF8(in_value));
+  // NOTE: no DCHECK that |in_value| is valid utf-8. We explicitly allow invalid

[sky, 2016/11/03 19:14:14]

My rationale here for removing the DCHECK is that UTF16ToUTF8 below basically
continues on with invalid input.

+  // utf-8.
 }
 
 StringValue::StringValue(const string16& in_value)