Fix for WebView accessible resources.

extensions/browser/renderer_startup_helper.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/browser/renderer_startup_helper.h"
 
 #include "base/values.h"
 #include "components/keyed_service/content/browser_context_dependency_manager.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/render_process_host.h"
 #include "extensions/browser/extension_function_dispatcher.h"
 #include "extensions/browser/extension_registry.h"
 #include "extensions/browser/extensions_browser_client.h"
+#include "extensions/browser/guest_view/web_view/web_view_guest.h"
 #include "extensions/common/extension_messages.h"
 #include "extensions/common/extension_set.h"
 #include "extensions/common/extensions_client.h"
 #include "ui/base/webui/web_ui_util.h"
 
 using content::BrowserContext;
 
 namespace extensions {
 
 RendererStartupHelper::RendererStartupHelper(BrowserContext* browser_context)
@@ skipping 40 matching lines @@
     if (!ext->is_theme()) {
       // TODO(kalman): Only include tab specific permissions for extension
       // processes, no other process needs it, so it's mildly wasteful.
       // I am not sure this is possible to know this here, at such a low
       // level of the stack. Perhaps site isolation can help.
       bool include_tab_permissions = true;
       loaded_extensions.push_back(
           ExtensionMsg_Loaded_Params(ext.get(), include_tab_permissions));
     }
   }
+  std::string webview_partition_id = WebViewGuest::GetPartitionID(process);
+  if (!webview_partition_id.empty()) {
+    process->Send(new ExtensionMsg_SetWebViewPartitionID(
+        WebViewGuest::GetPartitionID(process)));
+  }

[not at google - send to devlin, 2015/08/31 21:52:51]

Take care where you put new code. In the original code, lines 59-75 are to do
with sending the ExtensionMsg_Loaded IPC, and this new code interrupts that. I'd
put it before the new code, and please comment it.

[paulmeyer, 2015/09/02 13:43:57]

Done.

   process->Send(new ExtensionMsg_Loaded(loaded_extensions));
 }
 
 //////////////////////////////////////////////////////////////////////////////
 
 // static
 RendererStartupHelper* RendererStartupHelperFactory::GetForBrowserContext(
     BrowserContext* context) {
   return static_cast<RendererStartupHelper*>(
       GetInstance()->GetServiceForBrowserContext(context, true));
@@ skipping 22 matching lines @@
     BrowserContext* context) const {
   // Redirected in incognito.
   return ExtensionsBrowserClient::Get()->GetOriginalContext(context);
 }
 
 bool RendererStartupHelperFactory::ServiceIsCreatedWithBrowserContext() const {
   return true;
 }
 
 }  // namespace extensions