Browser tag shim

chrome/renderer/extensions/extension_dispatcher.cc

 // Copyright (c) 2012 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 "chrome/renderer/extensions/extension_dispatcher.h"
 
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/string_piece.h"
@@ skipping 577 matching lines @@
   source_map_.RegisterSource("fileSystem",
                              IDR_FILE_SYSTEM_CUSTOM_BINDINGS_JS);
   source_map_.RegisterSource("i18n", IDR_I18N_CUSTOM_BINDINGS_JS);
   source_map_.RegisterSource("input.ime", IDR_INPUT_IME_CUSTOM_BINDINGS_JS);
   source_map_.RegisterSource("omnibox", IDR_OMNIBOX_CUSTOM_BINDINGS_JS);
   source_map_.RegisterSource("pageActions",
                              IDR_PAGE_ACTIONS_CUSTOM_BINDINGS_JS);
   source_map_.RegisterSource("pageAction", IDR_PAGE_ACTION_CUSTOM_BINDINGS_JS);
   source_map_.RegisterSource("pageCapture",
                              IDR_PAGE_CAPTURE_CUSTOM_BINDINGS_JS);
-  source_map_.RegisterSource("platformApp", IDR_PLATFORM_APP_JS);
   source_map_.RegisterSource("runtime", IDR_RUNTIME_CUSTOM_BINDINGS_JS);
   source_map_.RegisterSource("storage", IDR_STORAGE_CUSTOM_BINDINGS_JS);
   source_map_.RegisterSource("tabs", IDR_TABS_CUSTOM_BINDINGS_JS);
   source_map_.RegisterSource("tts", IDR_TTS_CUSTOM_BINDINGS_JS);
   source_map_.RegisterSource("ttsEngine", IDR_TTS_ENGINE_CUSTOM_BINDINGS_JS);
   source_map_.RegisterSource("types", IDR_TYPES_CUSTOM_BINDINGS_JS);
   source_map_.RegisterSource("webRequest", IDR_WEB_REQUEST_CUSTOM_BINDINGS_JS);
   source_map_.RegisterSource("webRequestInternal",
                              IDR_WEB_REQUEST_INTERNAL_CUSTOM_BINDINGS_JS);
   source_map_.RegisterSource("webstore", IDR_WEBSTORE_CUSTOM_BINDINGS_JS);
+
+  // Platform app sources that are not API-specific..
+  source_map_.RegisterSource("browserTag", IDR_BROWSER_TAG_JS);
+  source_map_.RegisterSource("platformApp", IDR_PLATFORM_APP_JS);
 }
 
 void ExtensionDispatcher::PopulateLazyBindingsMap() {
   lazy_bindings_map_["app"] = InstallAppBindings;
   lazy_bindings_map_["webstore"] = InstallWebstoreBindings;
 }
 
 void ExtensionDispatcher::InstallBindings(ModuleSystem* module_system,
                                           v8::Handle<v8::Context> v8_context,
                                           const std::string& api) {
@@ skipping 93 matching lines @@
       const std::set<std::string>& apis = context->GetAvailableExtensionAPIs();
       for (std::set<std::string>::const_iterator i = apis.begin();
            i != apis.end(); ++i) {
         InstallBindings(module_system.get(), v8_context, *i);
       }
 
       break;
     }
   }
 
-  // Inject custom JS into the platform app context to block certain features
-  // of the document and window.
-  if (IsWithinPlatformApp(frame))
+  if (IsWithinPlatformApp(frame)) {
+    // Inject custom JS into the platform app context to block certain features
+    // of the document and window.
     module_system->Require("platformApp");
 
+    if (extension &&
+        extension->HasAPIPermission(ExtensionAPIPermission::kBrowserTag)) {
+      module_system->Require("browserTag");
+    }
+  }
+
   context->set_module_system(module_system.Pass());
 
   int manifest_version = 1;
   if (extension)
     manifest_version = extension->manifest_version();
   context->DispatchOnLoadEvent(
       is_extension_process_,
       ChromeRenderProcessObserver::is_incognito_process(),
       manifest_version);
 
@@ skipping 278 matching lines @@
   // APIs, they don't get extension bindings injected. If we end up here it
   // means that a sandboxed page somehow managed to invoke an API anyway, so
   // we should abort.
   WebKit::WebFrame* frame = context->web_frame();
   ExtensionURLInfo url_info(frame->document().securityOrigin(),
       UserScriptSlave::GetDataSourceURLForFrame(frame));
   CHECK(!extensions_.IsSandboxedPage(url_info));
 
   return true;
 }