Don't disable MemoryPressureListener when MemoryCoordinator is enabled

content/browser/memory/memory_coordinator_impl.cc

 // Copyright 2016 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 "content/browser/memory/memory_coordinator_impl.h"
 
 #include "base/memory/memory_coordinator_client_registry.h"
 #include "base/memory/ptr_util.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/process/process_handle.h"
@@ skipping 255 matching lines @@
     return false;
 
   // Set |can_purge_after| to the maximum value to suppress another purge
   // request until the child process goes foreground and then goes background
   // again.
   iter->second.can_purge_after = base::TimeTicks::Max();
   handle->child()->PurgeMemory();
   return true;
 }
 
-void MemoryCoordinatorImpl::RecordMemoryPressure(
-    base::MemoryPressureMonitor::MemoryPressureLevel level) {
-  // TODO(bashi): Record memory pressure level.
-}
-
 MemoryState MemoryCoordinatorImpl::GetCurrentMemoryState() const {
   return browser_memory_state_;
 }
 
 void MemoryCoordinatorImpl::ForceSetMemoryCondition(MemoryCondition condition,
                                                     base::TimeDelta duration) {
   UpdateConditionIfNeeded(condition);
   suppress_condition_change_until_ = tick_clock_->NowTicks() + duration;
 }
 
@@ skipping 129 matching lines @@
 
 MemoryCoordinatorImpl::ChildInfo::ChildInfo() {}
 
 MemoryCoordinatorImpl::ChildInfo::ChildInfo(const ChildInfo& rhs) {
   // This is a nop, but exists for compatibility with STL containers.
 }
 
 MemoryCoordinatorImpl::ChildInfo::~ChildInfo() {}
 
 }  // namespace content