[DevTools] Move IO and Tracing to new generator.

content/browser/devtools/protocol_string.h

Index: content/browser/devtools/protocol_string.h
diff --git a/content/browser/devtools/protocol_string.h b/content/browser/devtools/protocol_string.h
index 8541aba1ae746acf9f361f503a3166acdc895014..1d3d2edf13478fbbcd59d01e783e42870dfbf412 100644
--- a/content/browser/devtools/protocol_string.h
+++ b/content/browser/devtools/protocol_string.h
@@ -13,6 +13,10 @@
 #include "base/strings/string_number_conversions.h"
 #include "content/common/content_export.h"
 
+namespace base {
+class Value;
+}
+
 namespace content {
 namespace protocol {
 
@@ -43,7 +47,10 @@ class CONTENT_EXPORT StringUtil {
     return base::IntToString(number);
   }
   static String fromDouble(double number) {
-    return base::DoubleToString(number);
+    String s = base::DoubleToString(number);
+    if (!s.empty() && s[0] == '.')
+      s = "0" + s;
+    return s;
   }
   static const size_t kNotFound = static_cast<size_t>(-1);
   static void builderReserve(StringBuilder& builder, unsigned capacity) {
@@ -52,6 +59,10 @@ class CONTENT_EXPORT StringUtil {
   static std::unique_ptr<protocol::Value> parseJSON(const String&);
 };
 
+std::unique_ptr<protocol::Value> toProtocolValue(
+    const base::Value* value, int depth);
+std::unique_ptr<base::Value> toBaseValue(protocol::Value* value, int depth);
+
 }  // namespace protocol
 }  // namespace content