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

cc/trees/layer_tree_host_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.h"
 
 #include <algorithm>
 
 #include "base/auto_reset.h"
 #include "base/synchronization/lock.h"
@@ skipping 1423 matching lines @@
   scoped_refptr<NoScaleContentLayer> root_layer_;
   scoped_refptr<ContentLayer> child_layer_;
 };
 
 MULTI_THREAD_TEST_F(LayerTreeHostTestDeviceScaleFactorScalesViewportAndLayers);
 
 // Verify atomicity of commits and reuse of textures.
 class LayerTreeHostTestDirectRendererAtomicCommit : public LayerTreeHostTest {
  public:
   virtual void InitializeSettings(LayerTreeSettings* settings) OVERRIDE {
+    settings->texture_id_allocation_chunk_size = 1;
     // Make sure partial texture updates are turned off.
     settings->max_partial_texture_updates = 0;
     // Linear fade animator prevents scrollbars from drawing immediately.
     settings->scrollbar_animator = LayerTreeSettings::NoAnimator;
   }
 
   virtual void SetupTree() OVERRIDE {
     layer_ = FakeContentLayer::Create(&client_);
     layer_->SetBounds(gfx::Size(10, 20));
 
@@ skipping 158 matching lines @@
   layer->SetAnchorPoint(anchor);
   layer->SetPosition(position);
   layer->SetBounds(bounds);
   layer->SetContentsOpaque(opaque);
 }
 
 class LayerTreeHostTestAtomicCommitWithPartialUpdate
     : public LayerTreeHostTest {
  public:
   virtual void InitializeSettings(LayerTreeSettings* settings) OVERRIDE {
+    settings->texture_id_allocation_chunk_size = 1;
     // Allow one partial texture update.
     settings->max_partial_texture_updates = 1;
     // No partial updates when impl side painting is enabled.
     settings->impl_side_painting = false;
   }
 
   virtual void SetupTree() OVERRIDE {
     parent_ = FakeContentLayer::Create(&client_);
     parent_->SetBounds(gfx::Size(10, 20));
 
@@ skipping 2112 matching lines @@
   int last_source_frame_number_drawn_;
 };
 
 MULTI_THREAD_TEST_F(LayerTreeHostTestDeferredInitialize);
 
 // Test for UI Resource management.
 class LayerTreeHostTestUIResource : public LayerTreeHostTest {
  public:
   LayerTreeHostTestUIResource() : num_ui_resources_(0), num_commits_(0) {}
 
+  virtual void InitializeSettings(LayerTreeSettings* settings) OVERRIDE {
+    settings->texture_id_allocation_chunk_size = 1;
+  }
+
   virtual void BeginTest() OVERRIDE { PostSetNeedsCommitToMainThread(); }
 
   virtual void DidCommit() OVERRIDE {
     int frame = num_commits_;
     switch (frame) {
       case 1:
         CreateResource();
         CreateResource();
         PostSetNeedsCommitToMainThread();
         break;
@@ skipping 1432 matching lines @@
   size_t second_output_surface_memory_limit_;
   FakeContentLayerClient client_;
   scoped_refptr<FakeContentLayer> root_;
 };
 
 // No output to copy for delegated renderers.
 SINGLE_AND_MULTI_THREAD_TEST_F(
     LayerTreeHostTestSetMemoryPolicyOnLostOutputSurface);
 
 }  // namespace cc