Added functionality to chrome://net-internals/#chromeos page that user

chromeos/dbus/debug_daemon_client.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 <fcntl.h>
 #include <unistd.h>
 
 #include "chromeos/dbus/debug_daemon_client.h"
 
 #include "base/bind.h"
@@ skipping 132 matching lines @@
         weak_ptr_factory_(this),
         pipe_reader_(NULL) {
     debugdaemon_proxy_ = bus->GetObjectProxy(
         debugd::kDebugdServiceName,
         dbus::ObjectPath(debugd::kDebugdServicePath));
   }
 
   virtual ~DebugDaemonClientImpl() {}
 
   // DebugDaemonClient override.
+  virtual void SetDebugMode(const std::string& subsystem,
+                            const SetDebugModeCallback& callback) OVERRIDE {
+    dbus::MethodCall method_call(debugd::kDebugdInterface,
+                                 debugd::kSetDebugMode);
+    dbus::MessageWriter writer(&method_call);
+    writer.AppendString(subsystem);
+    debugdaemon_proxy_->CallMethod(
+        &method_call,
+        dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
+        base::Bind(&DebugDaemonClientImpl::OnSetDebugMode,
+                   weak_ptr_factory_.GetWeakPtr(),
+                   callback));
+  }
+
   virtual void StartSystemTracing() OVERRIDE {
     dbus::MethodCall method_call(
         debugd::kDebugdInterface,
         debugd::kSystraceStart);
     dbus::MessageWriter writer(&method_call);
     writer.AppendString("all"); // TODO(sleffler) parameterize category list
 
     DVLOG(1) << "Requesting a systrace start";
     debugdaemon_proxy_->CallMethod(
         &method_call,
@@ skipping 39 matching lines @@
         dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
         base::Bind(&DebugDaemonClientImpl::OnRequestStopSystemTracing,
                    weak_ptr_factory_.GetWeakPtr()));
 
     pipe_reader_->CloseWriteFD();  // close our copy of fd after send
 
     return true;
   }
 
  private:
+  // Called when a response for SetDebugMode() is received.
+  void OnSetDebugMode(const SetDebugModeCallback& callback,
+                      dbus::Response* response) {
+    if (!response) {
+      LOG(ERROR) << "Failed to change debug mode";
+      callback.Run(false);
+    } else {
+      callback.Run(true);
+    }
+  }
+
   // Called when a response for StartSystemTracing() is received.
   void OnStartSystemTracing(dbus::Response* response) {
     if (!response) {
       LOG(ERROR) << "Failed to request systrace start";
       return;
     }
   }
 
   // Called when a response for RequestStopSystemTracing() is received.
   void OnRequestStopSystemTracing(dbus::Response* response) {
@@ skipping 15 matching lines @@
   scoped_ptr<PipeReader> pipe_reader_;
   StopSystemTracingCallback callback_;
 
   DISALLOW_COPY_AND_ASSIGN(DebugDaemonClientImpl);
 };
 
 // The DebugDaemonClient implementation used on Linux desktop,
 // which does nothing.
 class DebugDaemonClientStubImpl : public DebugDaemonClient {
   // DebugDaemonClient overrides.
+  virtual void SetDebugMode(const std::string& subsystem,
+                            const SetDebugModeCallback& callback) OVERRIDE {
+    callback.Run(false);
+  }
   virtual void StartSystemTracing() OVERRIDE {}
   virtual bool RequestStopSystemTracing(const StopSystemTracingCallback&
       callback) OVERRIDE {
     std::string no_data;
     callback.Run(base::RefCountedString::TakeString(&no_data));
     return true;
   }
 };
 
 DebugDaemonClient::DebugDaemonClient() {
@@ skipping 11 matching lines @@
 // static
 DebugDaemonClient* DebugDaemonClient::Create(DBusClientImplementationType type,
                                    dbus::Bus* bus) {
   if (type == REAL_DBUS_CLIENT_IMPLEMENTATION)
     return new DebugDaemonClientImpl(bus);
   DCHECK_EQ(STUB_DBUS_CLIENT_IMPLEMENTATION, type);
   return new DebugDaemonClientStubImpl();
 }
 
 }  // namespace chromeos