Provision to start base::SimpleTestTickClock at initial ticks

cc/surfaces/surface_display_output_surface_unittest.cc

 // Copyright 2015 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/surfaces/surface_display_output_surface.h"
 
 #include "cc/surfaces/onscreen_display_client.h"
 #include "cc/surfaces/surface_id_allocator.h"
 #include "cc/surfaces/surface_manager.h"
 #include "cc/test/fake_output_surface.h"
@@ skipping 30 matching lines @@
 
   FakeOutputSurface* output_surface() { return fake_output_surface_; }
 
  protected:
   FakeOutputSurface* fake_output_surface_;
 };
 
 class SurfaceDisplayOutputSurfaceTest : public testing::Test {
  public:
   SurfaceDisplayOutputSurfaceTest()
-      : now_src_(new base::SimpleTestTickClock()),
+      : now_src_(new base::SimpleTestTickClock(base::TimeTicks())),
         task_runner_(new OrderedSimpleTaskRunner(now_src_.get(), true)),
         allocator_(0),
         display_size_(1920, 1080),
         display_rect_(display_size_),
         display_client_(&surface_manager_,
                         &bitmap_manager_,
                         &gpu_memory_buffer_manager_,
                         renderer_settings_,
                         task_runner_),
         context_provider_(TestContextProvider::Create()),
@@ skipping 95 matching lines @@
   EXPECT_EQ(1u, output_surface_->num_sent_frames());
 
   SwapBuffersWithDamage(gfx::Rect());
   EXPECT_EQ(1u, output_surface_->num_sent_frames());
   task_runner_->RunUntilIdle();
   EXPECT_EQ(1u, output_surface_->num_sent_frames());
 }
 
 }  // namespace
 }  // namespace cc