Introduce IPC::Channel::Create*() to ensure it being heap-allocated.

ipc/ipc_send_fds_test.cc

Index: ipc/ipc_send_fds_test.cc
diff --git a/ipc/ipc_send_fds_test.cc b/ipc/ipc_send_fds_test.cc
index aeec8907a4f803b492c9759a90b75a8337e741c1..7e6a4e41e4622d9a6bd75d082b23c7a22dee01cc 100644
--- a/ipc/ipc_send_fds_test.cc
+++ b/ipc/ipc_send_fds_test.cc
@@ -134,10 +134,10 @@ int SendFdsClientCommon(const std::string& test_client_name,
   MyChannelDescriptorListener listener(expected_inode_num);
 
   // Set up IPC channel.
-  IPC::Channel channel(IPCTestBase::GetChannelName(test_client_name),
-                       IPC::Channel::MODE_CLIENT,
-                       &listener);
-  CHECK(channel.Connect());
+  scoped_ptr<IPC::Channel> channel(IPC::Channel::CreateClient(
+      IPCTestBase::GetChannelName(test_client_name),
+      &listener));
+  CHECK(channel->Connect());
 
   // Run message loop.
   base::MessageLoop::current()->Run();
@@ -233,14 +233,10 @@ class PipeChannelHelper {
 
   void Init() {
     IPC::ChannelHandle in_handle("IN");
-    in.reset(new IPC::Channel(in_handle,
-                              IPC::Channel::MODE_SERVER,
-                              &null_listener_));
+    in = IPC::Channel::CreateServer(in_handle, &null_listener_);
     base::FileDescriptor out_fd(in->TakeClientFileDescriptor(), false);
     IPC::ChannelHandle out_handle("OUT", out_fd);
-    out.reset(new IPC::Channel(out_handle,
-                               IPC::Channel::MODE_CLIENT,
-                               &cb_listener_));
+    out = IPC::Channel::CreateClient(out_handle, &cb_listener_);
     // PostTask the connect calls to make sure the callbacks happens
     // on the right threads.
     in_thread_->message_loop()->PostTask(