Revert "cc: Add UMA stats for record and raster time."

cc/base/histograms_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/base/histograms.h"
-
-#include <limits>
-
-#include "testing/gtest/include/gtest/gtest.h"
-
-using base::TimeDelta;
-using Sample = base::HistogramBase::Sample;
-
-namespace cc {
-
-class ScopedUMAHistogramAreaTimerBaseTest : public ::testing::Test {
- protected:
-  void ExpectValidHistogramValues(base::TimeDelta elapsed,
-                                  int area,
-                                  Sample expected_time_microseconds,
-                                  Sample expected_pixels_per_ms) {
-    Sample time_microseconds;
-    Sample pixels_per_ms;
-    ScopedUMAHistogramAreaTimerBase::GetHistogramValues(
-        elapsed, area, &time_microseconds, &pixels_per_ms);
-    EXPECT_EQ(expected_time_microseconds, time_microseconds);
-    EXPECT_EQ(expected_pixels_per_ms, pixels_per_ms);
-  }
-};
-
-namespace {
-
-TEST_F(ScopedUMAHistogramAreaTimerBaseTest, CommonCase) {
-  ExpectValidHistogramValues(TimeDelta::FromMicroseconds(500), 1000, 500, 2000);
-  ExpectValidHistogramValues(TimeDelta::FromMicroseconds(300), 1000, 300, 3333);
-}
-
-TEST_F(ScopedUMAHistogramAreaTimerBaseTest, ZeroArea) {
-  ExpectValidHistogramValues(TimeDelta::FromMicroseconds(500), 0, 500, 0);
-}
-
-TEST_F(ScopedUMAHistogramAreaTimerBaseTest, ZeroTime) {
-  // 1M pixels/ms, since the time is limited to at least 1us.
-  ExpectValidHistogramValues(TimeDelta(), 1000, 1, 1000000);
-}
-
-TEST_F(ScopedUMAHistogramAreaTimerBaseTest, ZeroTimeAndArea) {
-  ExpectValidHistogramValues(TimeDelta(), 0, 1, 0);
-}
-
-TEST_F(ScopedUMAHistogramAreaTimerBaseTest, VeryLargeTime) {
-  ExpectValidHistogramValues(TimeDelta::FromHours(24), 1000,
-                             std::numeric_limits<Sample>::max(), 0);
-}
-
-TEST_F(ScopedUMAHistogramAreaTimerBaseTest, VeryLargeArea) {
-  ExpectValidHistogramValues(TimeDelta::FromMicroseconds(500), 1000000000, 500,
-                             2000000000);
-  ExpectValidHistogramValues(TimeDelta::FromMicroseconds(1000),
-                             std::numeric_limits<int>::max(), 1000,
-                             std::numeric_limits<Sample>::max());
-}
-
-}  // namespace
-}  // namespace cc