Avoid sync IPCs for FileSystem API

chrome/browser/content_settings/tab_specific_content_settings.cc

Index: chrome/browser/content_settings/tab_specific_content_settings.cc
diff --git a/chrome/browser/content_settings/tab_specific_content_settings.cc b/chrome/browser/content_settings/tab_specific_content_settings.cc
index e54d95839627cde3a55f39cf2f47d1da1211353b..1ca618283dda212622c9b7f5b7abe5ab110a7c4e 100644
--- a/chrome/browser/content_settings/tab_specific_content_settings.cc
+++ b/chrome/browser/content_settings/tab_specific_content_settings.cc
@@ -19,6 +19,7 @@
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/content_settings/content_settings_details.h"
 #include "chrome/browser/content_settings/content_settings_utils.h"
+#include "chrome/browser/content_settings/cookie_settings.h"
 #include "chrome/browser/content_settings/host_content_settings_map.h"
 #include "chrome/browser/prerender/prerender_manager.h"
 #include "chrome/browser/profiles/profile.h"
@@ -343,6 +344,26 @@ void TabSpecificContentSettings::OnContentAllowed(ContentSettingsType type) {
   }
 }
 
+void TabSpecificContentSettings::OnRequestFileSystemAccess(
+    const IPC::Message& message) {
+  int request_id;
+  GURL origin_url;
+  GURL top_origin_url;
+  if (!ChromeViewHostMsg_RequestFileSystemAccess::Read(
+      &message, &request_id, &origin_url, &top_origin_url))
+    return;
+
+  Profile* profile =
+      Profile::FromBrowserContext(web_contents()->GetBrowserContext());
+  scoped_refptr<CookieSettings> cookie_settings(
+      CookieSettings::Factory::GetForProfile(profile));
+  bool allowed =
+      cookie_settings->IsSettingCookieAllowed(origin_url, top_origin_url);
+  OnFileSystemAccessed(origin_url, !allowed);
+  Send(new ChromeViewMsg_RequestFileSystemAccessResponse(
+          message.routing_id(), request_id, allowed));
+}
+
 void TabSpecificContentSettings::OnCookiesRead(
     const GURL& url,
     const GURL& frame_url,
@@ -640,6 +661,8 @@ bool TabSpecificContentSettings::OnMessageReceived(
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(TabSpecificContentSettings, message)
     IPC_MESSAGE_HANDLER(ChromeViewHostMsg_ContentBlocked, OnContentBlocked)
+    IPC_MESSAGE_HANDLER_GENERIC(ChromeViewHostMsg_RequestFileSystemAccess,

[jochen (gone - plz use gerrit), 2014/03/10 15:31:30]

this should be handled in chrome_render_message_filter instead

+                                OnRequestFileSystemAccess(message))
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;