Use console.log to report NaCl errors in Chrome instead of alerts

src/trusted/plugin/npapi/browser_impl_npapi.h

 /*
  * Copyright 2010 The Native Client Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can
  * be found in the LICENSE file.
  */
 
 
 // NPAPI implementation of the interface to call browser functionality.
 
 #ifndef NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_NPAPI_BROWSER_IMPL_NPAPI_H_
@@ skipping 25 matching lines @@
   // Functions for communication with the browser.
   virtual uintptr_t StringToIdentifier(const nacl::string& str);
   // Convert an identifier to a string.
   virtual nacl::string IdentifierToString(uintptr_t ident);
 
   // Pops up an alert box.  Returns false if that failed for any reason.
   virtual bool Alert(InstanceIdentifier instance_id,
                      const nacl::string& text);
 
   // Evaluate a JavaScript string in the browser.
-  virtual bool EvalString(InstanceIdentifier plugin_identifier,
+  virtual bool EvalString(InstanceIdentifier instance_id,
                           const nacl::string& handler_string);
 
+  // Write to the JavaScript console. Currently works in Chrome only, generates
+  // an alert in other browsers.
+  virtual bool AddToConsole(InstanceIdentifier instance_id,
+                            const nacl::string& text);
+
   // Gets the full URL of the current page.
   bool GetFullURL(InstanceIdentifier instance_id,
                   nacl::string* full_url);
 
   // Creates a browser scriptable handle for a given portable handle.
   virtual ScriptableHandle* NewScriptableHandle(PortableHandle* handle);
 
  private:
   NACL_DISALLOW_COPY_AND_ASSIGN(BrowserImplNpapi);
 };
 
 // Convert from the API-independent instance identifier to the NPAPI NPP.
 NPP InstanceIdentifierToNPP(InstanceIdentifier id);
 // Convert from the NPAPI NPP type to the API-independent instance identifier.
 InstanceIdentifier NPPToInstanceIdentifier(NPP npp);
 
 }  // namespace plugin
 
 #endif  // NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_NPAPI_BROWSER_IMPL_NPAPI_H_