[Extenisons Bindings] Don't throw unchecked errors; add console errors

extensions/renderer/script_context.h

Index: extensions/renderer/script_context.h
diff --git a/extensions/renderer/script_context.h b/extensions/renderer/script_context.h
index 43b511478070024808a6e7bdb83dbf349d140b6a..bb9945d2fcd139d77fb4d8823fabff0a915d0bbb 100644
--- a/extensions/renderer/script_context.h
+++ b/extensions/renderer/script_context.h
@@ -14,6 +14,7 @@
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/threading/thread_checker.h"
+#include "content/public/common/console_message_level.h"
 #include "extensions/common/features/feature.h"
 #include "extensions/common/permissions/api_permission_set.h"
 #include "extensions/renderer/module_system.h"
@@ -212,6 +213,11 @@ class ScriptContext : public RequestSender::Source {
   // no exception thrown), false if it does not (i.e. an exception was thrown).
   bool HasAccessOrThrowError(const std::string& name);
 
+  // Adds a message to the associated RenderFrame's console. If there is no
+  // RenderFrame, LOG()s the message instead.
+  void AddMessageToConsole(content::ConsoleMessageLevel level,
+                           const std::string& message);
+
   // Returns a string representation of this ScriptContext, for debugging.
   std::string GetDebugString() const;