base: Remove the string logging from CHECK().

ppapi/shared_impl/media_stream_buffer_manager.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/shared_impl/media_stream_buffer_manager.h"
 
 #include <stddef.h>
 
 #include <utility>
 
@@ skipping 53 matching lines @@
   return buffer;
 }
 
 std::vector<int32_t> MediaStreamBufferManager::DequeueBuffers() {
   std::vector<int32_t> buffers(buffer_queue_.begin(), buffer_queue_.end());
   buffer_queue_.clear();
   return buffers;
 }
 
 void MediaStreamBufferManager::EnqueueBuffer(int32_t index) {
-  CHECK_GE(index, 0) << "Invalid buffer index";
-  CHECK_LT(index, number_of_buffers_) << "Invalid buffer index";
+  // Invalid buffer index
+  CHECK_GE(index, 0);
+  // Invalid buffer index
+  CHECK_LT(index, number_of_buffers_);
   buffer_queue_.push_back(index);
   delegate_->OnNewBufferEnqueued();
 }
 
 bool MediaStreamBufferManager::HasAvailableBuffer() {
   return !buffer_queue_.empty();
 }
 
 MediaStreamBuffer* MediaStreamBufferManager::GetBufferPointer(int32_t index) {
   if (index < 0 || index >= number_of_buffers_)
     return NULL;
   return buffers_[index];
 }
 
 }  // namespace ppapi