cc: Remove unused_memory_limit_in_bytes field from GlobalStateThatImpactsTilePriority.

cc/trees/layer_tree_host_impl_unittest.cc

Index: cc/trees/layer_tree_host_impl_unittest.cc
diff --git a/cc/trees/layer_tree_host_impl_unittest.cc b/cc/trees/layer_tree_host_impl_unittest.cc
index 06b99a9a42dd9960cf4981d35c5d29bc03c2f8e1..b05563603b3296a3bdd03a65a76b180756e6dc65 100644
--- a/cc/trees/layer_tree_host_impl_unittest.cc
+++ b/cc/trees/layer_tree_host_impl_unittest.cc
@@ -6370,7 +6370,6 @@ 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());
   }
@@ -6387,8 +6386,6 @@ TEST_F(LayerTreeHostImplWithImplicitLimitsTest, ImplicitMemoryLimits) {
             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