PPAPI: Implement synchronous postMessage

content/renderer/pepper/v8_var_converter.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/pepper/v8_var_converter.h"
 
 #include <map>
 #include <stack>
 #include <string>
 
@@ skipping 393 matching lines @@
   result.success = FromV8ValueInternal(val, context, &result.var);
   if (!result.success)
     resource_converter_->Reset();
   result.completed_synchronously = !resource_converter_->NeedsFlush();
   if (!result.completed_synchronously)
     resource_converter_->Flush(base::Bind(callback, result.var));
 
   return result;
 }
 
+bool V8VarConverter::FromV8ValueSync(
+    v8::Handle<v8::Value> val,
+    v8::Handle<v8::Context> context,
+    ppapi::ScopedPPVar* result_var) {
+  bool success = FromV8ValueInternal(val, context, result_var);
+  if (!success || resource_converter_->NeedsFlush()) {
+    resource_converter_->Reset();
+    return false;
+  }
+  return true;
+}
+
 bool V8VarConverter::FromV8ValueInternal(
     v8::Handle<v8::Value> val,
     v8::Handle<v8::Context> context,
     ppapi::ScopedPPVar* result_var) {
   v8::Context::Scope context_scope(context);
   v8::HandleScope handle_scope(context->GetIsolate());
 
   HandleVarMap visited_handles;
   ParentHandleSet parent_handles;
 
@@ skipping 119 matching lines @@
             std::string(*name_utf8, name_utf8.length()), child_var);
         DCHECK(success);
       }
     }
   }
   *result_var = root;
   return true;
 }
 
 }  // namespace content