NotifyAllTileTasksCompleted for synchronous renderer compositor

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/location.h"
@@ skipping 335 matching lines @@
                                    bool success) override {
     ManagedMemoryPolicy zero_policy(
         0, gpu::MemoryAllocation::CUTOFF_ALLOW_NOTHING, 0);
     host_impl->SetMemoryPolicy(zero_policy);
   }
 };
 
 SINGLE_AND_MULTI_THREAD_TEST_F(
     LayerTreeHostFreeWorkerContextResourcesOnZeroMemoryLimit);
 
+// Test if the LTH successfully frees resources on the worker context when
+// hard memory limit is set to zero while using a synchronous compositor (like
+// Android WebView).
+class LayerTreeHostFreeWorkerContextResourcesOnZeroMemoryLimitSynchronous
+    : public LayerTreeHostFreeWorkerContextResourcesOnZeroMemoryLimit {
+ public:
+  void InitializeSettings(LayerTreeSettings* settings) override {
+    LayerTreeHostFreeWorkerContextResourcesTest::InitializeSettings(settings);
+    settings->use_external_begin_frame_source = true;
+    settings->using_synchronous_renderer_compositor = true;
+  }
+};
+
+SINGLE_AND_MULTI_THREAD_TEST_F(
+    LayerTreeHostFreeWorkerContextResourcesOnZeroMemoryLimitSynchronous);
+
 // Two setNeedsCommits in a row should lead to at least 1 commit and at least 1
 // draw with frame 0.
 class LayerTreeHostTestSetNeedsCommit1 : public LayerTreeHostTest {
  public:
   LayerTreeHostTestSetNeedsCommit1() : num_commits_(0), num_draws_(0) {}
 
   void BeginTest() override {
     PostSetNeedsCommitToMainThread();
     PostSetNeedsCommitToMainThread();
   }
@@ skipping 5670 matching lines @@
   void AfterTest() override {}
 
   std::vector<int> affected_by_page_scale_;
   std::vector<int> not_affected_by_page_scale_;
 };
 
 SINGLE_AND_MULTI_THREAD_TEST_F(LayerTreeTestPageScaleFlags);
 
 }  // namespace
 }  // namespace cc