Use new skia resource clearing API

cc/output/context_cache_controller.cc

 // Copyright (c) 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 "cc/output/context_cache_controller.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
 #include "base/synchronization/lock.h"
@@ skipping 141 matching lines @@
 
   // Try to acquire the context lock - if we can't acquire it then we've become
   // busy since checking |current_idle_generation_| above. In this case, just
   // re-post our idle callback and return.
   if (context_lock_ && !context_lock_->Try()) {
     base::AutoLock hold(current_idle_generation_lock_);
     PostIdleCallback(current_idle_generation_);
     return;
   }
 
-  if (gr_context_)
-    gr_context_->freeGpuResources();
+  if (gr_context_) {
+    gr_context_->purgeResourcesNotUsedInMs(std::chrono::milliseconds(0));
+  }
 
   // Toggle SetAggressivelyFreeResources to drop command buffer data.
   context_support_->SetAggressivelyFreeResources(true);
   context_support_->SetAggressivelyFreeResources(false);
 
   callback_pending_ = false;
 
   if (context_lock_)
     context_lock_->Release();
 }
 
 }  // namespace cc