cc: Remove unused_memory_limit_in_bytes field from GlobalStateThatImpactsTilePriority.

cc/trees/layer_tree_host_impl_unittest.cc

 // Copyright 2011 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/trees/layer_tree_host_impl.h"
 
 #include <cmath>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 6352 matching lines @@
 
     EXPECT_VECTOR_EQ(inner_expected, inner_scroll->TotalScrollOffset());
     EXPECT_VECTOR_EQ(outer_expected, outer_scroll->TotalScrollOffset());
   }
 }
 
 class LayerTreeHostImplWithImplicitLimitsTest : public LayerTreeHostImplTest {
  public:
   virtual void SetUp() OVERRIDE {
     LayerTreeSettings settings = DefaultSettings();
-    settings.max_unused_resource_memory_percentage = 50;
     settings.max_memory_for_prepaint_percentage = 50;
     CreateHostImpl(settings, CreateOutputSurface());
   }
 };
 
 TEST_F(LayerTreeHostImplWithImplicitLimitsTest, ImplicitMemoryLimits) {
   // Set up a memory policy and percentages which could cause
   // 32-bit integer overflows.
   ManagedMemoryPolicy mem_policy(300 * 1024 * 1024);  // 300MB
 
   // Verify implicit limits are calculated correctly with no overflows
   host_impl_->SetMemoryPolicy(mem_policy);
   EXPECT_EQ(host_impl_->global_tile_state().hard_memory_limit_in_bytes,
             300u * 1024u * 1024u);
   EXPECT_EQ(host_impl_->global_tile_state().soft_memory_limit_in_bytes,
             150u * 1024u * 1024u);
-  EXPECT_EQ(host_impl_->global_tile_state().unused_memory_limit_in_bytes,
-            75u * 1024u * 1024u);
 }
 
 }  // namespace
 }  // namespace cc