Switch a bunch of remaining filters to derive from BrowserMessageFilters so t...

chrome/browser/renderer_host/blob_dispatcher_host.cc

-// Copyright (c) 2010 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/browser/renderer_host/blob_dispatcher_host.h"
-
-#include "chrome/browser/browser_thread.h"
-#include "chrome/browser/child_process_security_policy.h"
-#include "chrome/browser/chrome_blob_storage_context.h"
-#include "chrome/common/render_messages.h"
-#include "googleurl/src/gurl.h"
-#include "ipc/ipc_message.h"
-#include "webkit/blob/blob_data.h"
-#include "webkit/blob/blob_storage_controller.h"
-
-BlobDispatcherHost::BlobDispatcherHost(
-    int process_id,
-    ChromeBlobStorageContext* blob_storage_context)
-    : process_id_(process_id),
-      blob_storage_context_(blob_storage_context) {
-}
-
-BlobDispatcherHost::~BlobDispatcherHost() {
-}
-
-void BlobDispatcherHost::Shutdown() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-
-  // Unregister all the blob URLs that are previously registered in this
-  // process.
-  for (base::hash_set<std::string>::const_iterator iter = blob_urls_.begin();
-       iter != blob_urls_.end(); ++iter) {
-    blob_storage_context_->controller()->UnregisterBlobUrl(GURL(*iter));
-  }
-}
-
-bool BlobDispatcherHost::OnMessageReceived(const IPC::Message& message,
-                                           bool* msg_is_ok) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-
-  *msg_is_ok = true;
-  bool handled = true;
-  IPC_BEGIN_MESSAGE_MAP_EX(BlobDispatcherHost, message, *msg_is_ok)
-    IPC_MESSAGE_HANDLER(ViewHostMsg_RegisterBlobUrl, OnRegisterBlobUrl)
-    IPC_MESSAGE_HANDLER(ViewHostMsg_RegisterBlobUrlFrom, OnRegisterBlobUrlFrom)
-    IPC_MESSAGE_HANDLER(ViewHostMsg_UnregisterBlobUrl, OnUnregisterBlobUrl)
-    IPC_MESSAGE_UNHANDLED(handled = false)
-  IPC_END_MESSAGE_MAP()
-  return handled;
-}
-
-// Check if the child process has been granted permission to register the files.
-bool BlobDispatcherHost::CheckPermission(
-    webkit_blob::BlobData* blob_data) const {
-  ChildProcessSecurityPolicy* policy =
-      ChildProcessSecurityPolicy::GetInstance();
-  for (std::vector<webkit_blob::BlobData::Item>::const_iterator iter =
-           blob_data->items().begin();
-       iter != blob_data->items().end(); ++iter) {
-    if (iter->type() == webkit_blob::BlobData::TYPE_FILE) {
-      if (!policy->CanReadFile(process_id_, iter->file_path()))
-        return false;
-    }
-  }
-  return true;
-}
-
-void BlobDispatcherHost::OnRegisterBlobUrl(
-    const GURL& url, const scoped_refptr<webkit_blob::BlobData>& blob_data) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-  if (!CheckPermission(blob_data.get()))
-    return;
-  blob_storage_context_->controller()->RegisterBlobUrl(url, blob_data);
-  blob_urls_.insert(url.spec());
-}
-
-void BlobDispatcherHost::OnRegisterBlobUrlFrom(
-    const GURL& url, const GURL& src_url) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-  blob_storage_context_->controller()->RegisterBlobUrlFrom(url, src_url);
-  blob_urls_.insert(url.spec());
-}
-
-void BlobDispatcherHost::OnUnregisterBlobUrl(const GURL& url) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-  blob_storage_context_->controller()->UnregisterBlobUrl(url);
-  blob_urls_.erase(url.spec());
-}