cc: Reduce command buffer flushes related to creating texture ids.

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 74 matching lines @@
         reduce_memory_result_(true),
         current_limit_bytes_(0),
         current_priority_cutoff_value_(0) {
     media::InitializeMediaLibraryForTesting();
   }
 
   virtual void SetUp() OVERRIDE {
     LayerTreeSettings settings;
     settings.minimum_occlusion_tracking_size = gfx::Size();
     settings.impl_side_painting = true;
+    settings.texture_id_allocation_chunk_size = 1;
 
     host_impl_ = LayerTreeHostImpl::Create(
         settings, this, &proxy_, &stats_instrumentation_, NULL);
     host_impl_->InitializeRenderer(CreateOutputSurface());
     host_impl_->SetViewportSize(gfx::Size(10, 10));
   }
 
   virtual void TearDown() OVERRIDE {}
 
   virtual void DidLoseOutputSurfaceOnImplThread() OVERRIDE {
@@ skipping 5360 matching lines @@
     // The root should have scrolled.
     ASSERT_EQ(2u, scroll_info->scrolls.size());
     ExpectContains(*scroll_info.get(),
                    host_impl_->active_tree()->root_layer()->id(),
                    gfx::Vector2d(0, 10));
   }
 }
 
 }  // namespace
 }  // namespace cc