[Telemetry] Move gpu_timeline metrics to telemetry.web_perf

BUG=439497

Review URL: https://codereview.chromium.org/926833002

Cr-Commit-Position: refs/heads/master@{#316625}

tools/chrome_proxy/integration_tests/chrome_proxy_metrics_unittest.py

@@ -7,7 +7,7 @@ import unittest
 
 from integration_tests import chrome_proxy_metrics as metrics
 from integration_tests import network_metrics_unittest as network_unittest
-from metrics import test_page_test_results
+from telemetry.unittest_util import test_page_test_results
 
 
 # Timeline events used in tests.

tools/chrome_proxy/integration_tests/network_metrics_unittest.py

@@ -6,7 +6,7 @@ import base64
 import unittest
 
 from integration_tests import network_metrics
-from metrics import test_page_test_results
+from telemetry.unittest_util import test_page_test_results
 from telemetry.timeline import event
 
 

tools/perf/benchmarks/gpu_times.py

@@ -2,11 +2,11 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 from benchmarks import silk_flags
-from metrics import gpu_timeline
 import page_sets
 from telemetry import benchmark
 from telemetry.core.platform import tracing_category_filter
 from telemetry.web_perf import timeline_based_measurement
+from telemetry.web_perf.metrics import gpu_timeline
 
 TOPLEVEL_GL_CATEGORY = 'gpu_toplevel'
 TOPLEVEL_CATEGORIES = ['disabled-by-default-gpu.device',

tools/perf/metrics/timeline_unittest.py

@@ -4,8 +4,8 @@
 
 import unittest
 
-from metrics import test_page_test_results
 from metrics import timeline
+from telemetry.unittest_util import test_page_test_results
 from telemetry.timeline import model as model_module
 from telemetry.web_perf import timeline_interaction_record as tir_module
 

tools/telemetry/telemetry/web_perf/metrics/gpu_timeline_unittest.py

@@ -4,12 +4,12 @@
 
 import unittest
 
-from metrics import test_page_test_results
-from metrics import gpu_timeline
+from telemetry.unittest_util import test_page_test_results
 from telemetry.timeline import async_slice as async_slice_module
 from telemetry.timeline import slice as slice_module
 from telemetry.timeline import model as model_module
 from telemetry.web_perf import timeline_interaction_record as tir_module
+from telemetry.web_perf.metrics import gpu_timeline
 
 SERVICE_FRAME_END_CATEGORY, SERVICE_FRAME_END_NAME = \
     gpu_timeline.SERVICE_FRAME_END_MARKER