Revert of IPC Fuzzer: Make ChannelMojo work when --enable-channel-mojo is...

Revert of IPC Fuzzer: Make ChannelMojo work when --enable-channel-mojo is givne (patchset #1 id:1 of https://codereview.chromium.org/885143002/)

Reason for revert:
The flag was wrong. It needs finer configuration.

Original issue's description:
> IPC Fuzzer: Make ChannelMojo work when --enable-channel-mojo is given
>
> This adds an option to enable ChannelMojo on ipc_fuzzer.
>
> R=inferno@chormium.org, mbarbella@chromium.org
> BUG=453571
>
> Committed: https://crrev.com/9b1b6da70aab6c78bbecb5f86081ec5abc101f86
> Cr-Commit-Position: refs/heads/master@{#313840}

TBR=inferno@chormium.org,tsepez@chromium.org,mbarbella@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=453571

Review URL: https://codereview.chromium.org/893603004

Cr-Commit-Position: refs/heads/master@{#313953}

tools/ipc_fuzzer/replay/replay.gyp

@@ -12,7 +12,6 @@
       'type': 'executable',
       'dependencies': [
         '../message_lib/message_lib.gyp:ipc_message_lib',
-        '../../../ipc/mojo/ipc_mojo.gyp:ipc_mojo'
       ],
       'sources': [
         'replay.cc',

tools/ipc_fuzzer/replay/replay_process.cc

@@ -14,7 +14,6 @@
 #include "chrome/common/chrome_switches.h"
 #include "ipc/ipc_descriptors.h"
 #include "ipc/ipc_switches.h"
-#include "ipc/mojo/ipc_channel_mojo.h"
 
 namespace ipc_fuzzer {
 
@@ -67,19 +66,10 @@ void ReplayProcess::OpenChannel() {
       base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
           switches::kProcessChannelID);
 
-  bool should_use_mojo = base::CommandLine::ForCurrentProcess()->HasSwitch(
-      "enable-channel-mojo");
-  if (should_use_mojo) {
-    channel_ = IPC::ChannelProxy::Create(
-        IPC::ChannelMojo::CreateClientFactory(channel_name),
-        this,
-        io_thread_.message_loop_proxy());
-  } else {
-    channel_ = IPC::ChannelProxy::Create(channel_name,
-                                         IPC::Channel::MODE_CLIENT,
-                                         this,
-                                         io_thread_.message_loop_proxy());
-  }
+  channel_ = IPC::ChannelProxy::Create(channel_name,
+                                       IPC::Channel::MODE_CLIENT,
+                                       this,
+                                       io_thread_.message_loop_proxy());
 }
 
 bool ReplayProcess::OpenTestcase() {