PictureLayerImplTests: Start frame time ticks at 1 millisecond.

cc/layers/picture_layer_impl_unittest.cc

 // Copyright 2013 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/layers/picture_layer_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <set>
 #include <utility>
@@ skipping 388 matching lines @@
     PictureLayerTiling* tiling = tilings->tiling_at(i);
     EXPECT_EQ(
         tiling->GetCurrentVisibleRectForTesting(),
         gfx::ScaleToEnclosingRect(viewport_rect_for_tile_priority_in_view_space,
                                   tiling->contents_scale()));
   }
 }
 
 TEST_F(PictureLayerImplTest, InvalidViewportForPrioritizingTiles) {
   base::TimeTicks time_ticks;
+  time_ticks += base::TimeDelta::FromMilliseconds(1);
   host_impl_.SetCurrentFrameTimeTicks(time_ticks);
 
   gfx::Size tile_size(100, 100);
   gfx::Size layer_bounds(400, 400);
 
   scoped_refptr<FakePicturePileImpl> pending_pile =
       FakePicturePileImpl::CreateFilledPile(tile_size, layer_bounds);
   scoped_refptr<FakePicturePileImpl> active_pile =
       FakePicturePileImpl::CreateFilledPile(tile_size, layer_bounds);
 
@@ skipping 68 matching lines @@
   EXPECT_FALSE(visible_rect_for_tile_priority ==
                active_layer_->visible_rect_for_tile_priority());
   EXPECT_FALSE(viewport_rect_for_tile_priority ==
                active_layer_->viewport_rect_for_tile_priority());
   EXPECT_FALSE(screen_space_transform_for_tile_priority ==
                active_layer_->screen_space_transform_for_tile_priority());
 }
 
 TEST_F(PictureLayerImplTest, InvalidViewportAfterReleaseResources) {
   base::TimeTicks time_ticks;
+  time_ticks += base::TimeDelta::FromMilliseconds(1);
   host_impl_.SetCurrentFrameTimeTicks(time_ticks);
 
   gfx::Size tile_size(100, 100);
   gfx::Size layer_bounds(400, 400);
 
   scoped_refptr<FakePicturePileImpl> pending_pile =
       FakePicturePileImpl::CreateFilledPile(tile_size, layer_bounds);
   scoped_refptr<FakePicturePileImpl> active_pile =
       FakePicturePileImpl::CreateFilledPile(tile_size, layer_bounds);
 
@@ skipping 2160 matching lines @@
   // Since the active layer has no tiles at all, the pending layer doesn't
   // need content in order to activate.
   pending_layer_->MarkVisibleResourcesAsRequired();
   AssertNoTilesRequired(pending_layer_->HighResTiling());
   if (host_impl_.settings().create_low_res_tiling)
     AssertNoTilesRequired(pending_layer_->LowResTiling());
 }
 
 TEST_F(NoLowResPictureLayerImplTest, InvalidViewportForPrioritizingTiles) {
   base::TimeTicks time_ticks;
+  time_ticks += base::TimeDelta::FromMilliseconds(1);
   host_impl_.SetCurrentFrameTimeTicks(time_ticks);
 
   gfx::Size tile_size(100, 100);
   gfx::Size layer_bounds(400, 400);
 
   scoped_refptr<FakePicturePileImpl> pending_pile =
       FakePicturePileImpl::CreateFilledPile(tile_size, layer_bounds);
   scoped_refptr<FakePicturePileImpl> active_pile =
       FakePicturePileImpl::CreateFilledPile(tile_size, layer_bounds);
 
@@ skipping 68 matching lines @@
   EXPECT_FALSE(visible_rect_for_tile_priority ==
                active_layer_->visible_rect_for_tile_priority());
   EXPECT_FALSE(viewport_rect_for_tile_priority ==
                active_layer_->viewport_rect_for_tile_priority());
   EXPECT_FALSE(screen_space_transform_for_tile_priority ==
                active_layer_->screen_space_transform_for_tile_priority());
 }
 
 TEST_F(NoLowResPictureLayerImplTest, InvalidViewportAfterReleaseResources) {
   base::TimeTicks time_ticks;
+  time_ticks += base::TimeDelta::FromMilliseconds(1);
   host_impl_.SetCurrentFrameTimeTicks(time_ticks);
 
   gfx::Size tile_size(100, 100);
   gfx::Size layer_bounds(400, 400);
 
   scoped_refptr<FakePicturePileImpl> pending_pile =
       FakePicturePileImpl::CreateFilledPile(tile_size, layer_bounds);
   scoped_refptr<FakePicturePileImpl> active_pile =
       FakePicturePileImpl::CreateFilledPile(tile_size, layer_bounds);
 
@@ skipping 930 matching lines @@
 
   host_impl_.tile_manager()->InitializeTilesWithResourcesForTesting(all_tiles);
 
   VerifyEvictionConsidersOcclusion(pending_layer_,
                                    total_expected_occluded_tile_count);
   VerifyEvictionConsidersOcclusion(active_layer_,
                                    total_expected_occluded_tile_count);
 }
 }  // namespace
 }  // namespace cc