base: Remove the string logging from CHECK().

content/renderer/media/cdm/pepper_cdm_wrapper_impl.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 "ppapi/features/features.h"
 
 #if BUILDFLAG(ENABLE_PEPPER_CDMS)
 #include "content/renderer/media/cdm/pepper_cdm_wrapper_impl.h"
 
 #include <utility>
@@ skipping 45 matching lines @@
 
   // Only Pepper plugins are supported, so it must ultimately be a ppapi object.
   PepperWebPluginImpl* ppapi_plugin = static_cast<PepperWebPluginImpl*>(plugin);
   scoped_refptr<PepperPluginInstanceImpl> plugin_instance =
       ppapi_plugin->instance();
   if (!plugin_instance.get())
     return std::unique_ptr<PepperCdmWrapper>();
 
   GURL plugin_url(plugin_instance->container()->document().url());
   GURL plugin_security_origin = plugin_url.GetOrigin();
-  CHECK_EQ(security_origin, plugin_security_origin)
-      << "Pepper instance has a different origin than the EME call.";
+  // Pepper instance has a different origin than the EME call.
+  CHECK_EQ(security_origin, plugin_security_origin);
 
   if (!plugin_instance->GetContentDecryptorDelegate())
     return std::unique_ptr<PepperCdmWrapper>();
 
   return std::unique_ptr<PepperCdmWrapper>(
       new PepperCdmWrapperImpl(std::move(helper_plugin), plugin_instance));
 }
 
 PepperCdmWrapperImpl::PepperCdmWrapperImpl(
     ScopedHelperPlugin helper_plugin,
@@ skipping 12 matching lines @@
   helper_plugin_.reset();
 }
 
 ContentDecryptorDelegate* PepperCdmWrapperImpl::GetCdmDelegate() {
   return plugin_instance_->GetContentDecryptorDelegate();
 }
 
 }  // namespace content
 
 #endif  // BUILDFLAG(ENABLE_PEPPER_CDMS)