Support API aliases

extensions/renderer/script_context.cc

 // Copyright 2014 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/script_context.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/strings/string_split.h"
@@ skipping 203 matching lines @@
     web_frame_->requestExecuteV8Function(v8_context(), function, global, argc,
                                          argv, nullptr);
   } else {
     // TODO(devlin): This probably isn't safe.
     function->Call(global, argc, argv);
   }
 }
 
 Feature::Availability ScriptContext::GetAvailability(
     const std::string& api_name) {
+  return GetAvailability(api_name, true);
+}
+
+Feature::Availability ScriptContext::GetAvailability(
+    const std::string& api_name,
+    bool allow_alias) {
   DCHECK(thread_checker_.CalledOnValidThread());
   if (base::StartsWith(api_name, "test", base::CompareCase::SENSITIVE)) {
     bool allowed = base::CommandLine::ForCurrentProcess()->
                        HasSwitch(::switches::kTestType);
     Feature::AvailabilityResult result =
         allowed ? Feature::IS_AVAILABLE : Feature::MISSING_COMMAND_LINE_SWITCH;
     return Feature::Availability(result,
                                  allowed ? "" : "Only allowed in tests");
   }
   // Hack: Hosted apps should have the availability of messaging APIs based on
   // the URL of the page (which might have access depending on some extension
   // with externally_connectable), not whether the app has access to messaging
   // (which it won't).
   const Extension* extension = extension_.get();
   if (extension && extension->is_hosted_app() &&
       (api_name == "runtime.connect" || api_name == "runtime.sendMessage")) {
     extension = NULL;
   }
-  return ExtensionAPI::GetSharedInstance()->IsAvailable(api_name, extension,
-                                                        context_type_, url());
+  return ExtensionAPI::GetSharedInstance()->IsAvailable(
+      api_name, extension, context_type_, url(), allow_alias);
 }
 
 void ScriptContext::DispatchEvent(const char* event_name,
                                   v8::Local<v8::Array> args) const {
   DCHECK(thread_checker_.CalledOnValidThread());
   v8::HandleScope handle_scope(isolate());
   v8::Context::Scope context_scope(v8_context());
 
   v8::Local<v8::Value> argv[] = {v8::String::NewFromUtf8(isolate(), event_name),
                                  args};
   module_system_->CallModuleMethodSafe(kEventBindings, "dispatchEvent",
                                        arraysize(argv), argv);
 }
 
 std::string ScriptContext::GetContextTypeDescription() const {
   DCHECK(thread_checker_.CalledOnValidThread());
   return GetContextTypeDescriptionString(context_type_);
 }
 
 std::string ScriptContext::GetEffectiveContextTypeDescription() const {
   DCHECK(thread_checker_.CalledOnValidThread());
   return GetContextTypeDescriptionString(effective_context_type_);
 }
 
-bool ScriptContext::IsAnyFeatureAvailableToContext(const Feature& api) {
+bool ScriptContext::IsAnyFeatureAvailableToContext(const Feature& api,
+                                                   bool allow_alias) {
   DCHECK(thread_checker_.CalledOnValidThread());
   // TODO(lazyboy): Decide what we should do for SERVICE_WORKER_CONTEXT.
   GURL url = context_type() == Feature::SERVICE_WORKER_CONTEXT
                  ? url_
                  : GetDataSourceURLForFrame(web_frame());
   return ExtensionAPI::GetSharedInstance()->IsAnyFeatureAvailableToContext(
-      api, extension(), context_type(), url);
+      api, extension(), context_type(), url, allow_alias);
 }
 
 // static
 GURL ScriptContext::GetDataSourceURLForFrame(const blink::WebFrame* frame) {
   // Normally we would use frame->document().url() to determine the document's
   // URL, but to decide whether to inject a content script, we use the URL from
   // the data source. This "quirk" helps prevents content scripts from
   // inadvertently adding DOM elements to the compose iframe in Gmail because
   // the compose iframe's dataSource URL is about:blank, but the document URL
   // changes to match the parent document after Gmail document.writes into
@@ skipping 226 matching lines @@
     v8::Local<v8::Value> argv[]) {
   return context_->CallFunction(function, argc, argv);
 }
 
 gin::ContextHolder* ScriptContext::Runner::GetContextHolder() {
   v8::HandleScope handle_scope(context_->isolate());
   return gin::PerContextData::From(context_->v8_context())->context_holder();
 }
 
 }  // namespace extensions