Add the ability for DevTools to wrap network transactions.

chrome/browser/devtools/devtools_network_controller.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 "chrome/browser/devtools/devtools_network_controller.h"
+
+#include "chrome/browser/devtools/devtools_network_transaction.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/profiles/profile_io_data.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/browser/resource_context.h"
+
+namespace {
+
+const char kDevToolsRequestInitiator[] = "X-DevTools-Request-Initiator";
+
+}  // namespace
+
+DevToolsNetworkController::DevToolsNetworkController() {
+}
+
+DevToolsNetworkController::~DevToolsNetworkController() {
+}
+
+void DevToolsNetworkController::AddTransaction(
+    DevToolsNetworkTransaction* transaction) {
+  transactions_.insert(transaction);

[pfeldman, 2014/04/23 13:00:28]

DCHECK every method on the IO thread please.

[eustas, 2014/04/29 08:14:42]

Done. But I've used thread checker to avoid compexity in unit tests.

+}
+
+void DevToolsNetworkController::RemoveTransaction(
+    DevToolsNetworkTransaction* transaction) {
+  DCHECK(transactions_.find(transaction) != transactions_.end());
+  transactions_.erase(transaction);
+}
+
+// static
+void DevToolsNetworkController::DisableNetwork(
+    Profile* profile,
+    const std::string& client_id,
+    bool disable_network) {
+  DCHECK(profile);
+  content::ResourceContext* resource_context = profile->GetResourceContext();
+  DCHECK(resource_context);
+  content::BrowserThread::PostTask(
+      content::BrowserThread::IO,
+      FROM_HERE,
+      base::Bind(
+          &DevToolsNetworkController::DisableNetworkOnIO,
+          resource_context,
+          client_id,
+          disable_network));
+}
+
+// static
+void DevToolsNetworkController::DisableNetworkOnIO(
+    content::ResourceContext* resource_context,
+    const std::string& client_id,
+    bool disable_network) {
+  DCHECK(resource_context);
+  DevToolsNetworkController* controller = ProfileIOData::FromResourceContext(
+      resource_context)->network_controller();
+  DCHECK(controller);
+  controller->DisableNetwork(client_id, disable_network);
+}
+
+void DevToolsNetworkController::DisableNetwork(
+    const std::string& client_id,
+    bool disable_network) {
+  if (!disable_network) {
+    clients_.erase(client_id);
+    return;
+  }
+  clients_.insert(client_id);
+
+  // Iterate over a copy of set, because failing of transaction could result in
+  // creating a new one, or (theoretically) destroying one.
+  Transactions old_transactions(transactions_);
+  for (Transactions::iterator it = old_transactions.begin();
+       it != old_transactions.end(); ++it) {
+    if (transactions_.find(*it) == transactions_.end())
+      continue;
+    if (!(*it)->request() || (*it)->failed())
+      continue;
+    if (ShouldFail((*it)->request()))
+      (*it)->Fail();
+  }
+}
+
+bool DevToolsNetworkController::ShouldFail(
+    const net::HttpRequestInfo* request) {
+  DCHECK(request);
+  if (clients_.empty())
+    return false;
+
+  if (request->extra_headers.HasHeader(kDevToolsRequestInitiator))
+    return false;
+
+  // TODO: Add domain blacklist.
+
+  return true;
+}