[Extensions Bindings] Add an ExceptionHandler class

extensions/renderer/bindings/api_last_error.cc

 // Copyright 2017 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 "extensions/renderer/bindings/api_last_error.h"
 
 #include "gin/converter.h"
 #include "gin/data_object_builder.h"
 #include "gin/handle.h"
 #include "gin/object_template_builder.h"
@@ skipping 95 matching lines @@
       isolate, gin::StringToSymbol(isolate, kScriptSuppliedValueKey));
   v8::Maybe<bool> set_private =
       holder->SetPrivate(context, script_value_key, value);
   if (!set_private.IsJust() || !set_private.FromJust())
     NOTREACHED();
 }
 
 }  // namespace
 
 APILastError::APILastError(const GetParent& get_parent,
-                           const AddConsoleError& add_console_error)
+                           const binding::AddConsoleError& add_console_error)
     : get_parent_(get_parent), add_console_error_(add_console_error) {}
 APILastError::APILastError(APILastError&& other) = default;
 APILastError::~APILastError() = default;
 
 void APILastError::SetError(v8::Local<v8::Context> context,
                             const std::string& error) {
   v8::Isolate* isolate = context->GetIsolate();
   DCHECK(isolate);
   v8::HandleScope handle_scope(isolate);
 
@@ skipping 146 matching lines @@
   v8::Isolate* isolate = context->GetIsolate();
   v8::Local<v8::String> key = gin::StringToSymbol(isolate, kLastErrorProperty);
   // This CreateDataProperty() can fail, but there's nothing to do if it does
   // (the exception will be caught by the TryCatch in SetError()).
   ignore_result(secondary_parent->CreateDataProperty(
       context, key,
       gin::DataObjectBuilder(isolate).Set("message", error).Build()));
 }
 
 }  // namespace extensions