Revert of Leak reports collect information about the last uptrend

components/metrics/leak_detector/call_stack_table_unittest.cc

Index: components/metrics/leak_detector/call_stack_table_unittest.cc
diff --git a/components/metrics/leak_detector/call_stack_table_unittest.cc b/components/metrics/leak_detector/call_stack_table_unittest.cc
index 253b2bc170e8f3cc473e76c044560ebff91a6cf0..f56f628499e34915851a5344a11c89fedf269287 100644
--- a/components/metrics/leak_detector/call_stack_table_unittest.cc
+++ b/components/metrics/leak_detector/call_stack_table_unittest.cc
@@ -360,99 +360,5 @@
   EXPECT_EQ(stack2_, iter->value.call_stack());
 }
 
-TEST_F(CallStackTableTest, GetLastUptrendInfo) {
-  CallStackTable table(kDefaultLeakThreshold);
-
-  // Add some |stack0_| and |stack1_|.
-  for (int i = 0; i < 60; ++i)
-    table.Add(stack0_);
-  for (int i = 0; i < 60; ++i)
-    table.Add(stack1_);
-  table.UpdateLastDropInfo(100);
-
-  size_t timestamp_delta;
-  uint32_t count_delta;
-  table.GetLastUptrendInfo(stack0_, 100, &timestamp_delta, &count_delta);
-  EXPECT_EQ(0U, timestamp_delta);
-  EXPECT_EQ(0U, count_delta);
-
-  // Remove |stack0_| and add |stack1_|.
-  for (int i = 0; i < 30; ++i)
-    table.Remove(stack0_);
-  for (int i = 0; i < 30; ++i)
-    table.Add(stack1_);
-  table.UpdateLastDropInfo(200);
-
-  table.GetLastUptrendInfo(stack0_, 200, &timestamp_delta, &count_delta);
-  EXPECT_EQ(0U, timestamp_delta);
-  EXPECT_EQ(0U, count_delta);
-
-  table.GetLastUptrendInfo(stack1_, 200, &timestamp_delta, &count_delta);
-  EXPECT_EQ(100U, timestamp_delta);
-  EXPECT_EQ(30U, count_delta);
-
-  // Check if previous drop of |stack0_| was recorded and introduce |stack2_|.
-  for (int i = 0; i < 30; ++i)
-    table.Add(stack0_);
-  for (int i = 0; i < 60; ++i)
-    table.Add(stack2_);
-  table.UpdateLastDropInfo(300);
-
-  table.GetLastUptrendInfo(stack0_, 300, &timestamp_delta, &count_delta);
-  EXPECT_EQ(100U, timestamp_delta);
-  EXPECT_EQ(30U, count_delta);
-
-  table.GetLastUptrendInfo(stack2_, 300, &timestamp_delta, &count_delta);
-  EXPECT_EQ(0U, timestamp_delta);
-  EXPECT_EQ(0U, count_delta);
-
-  // Introduce more variation between updates. Decrease |stack2_| to 0.
-  // All the history for |stack2_| should be forgotten.
-  for (int i = 0; i < 30; ++i)
-    table.Add(stack0_);
-  for (int i = 0; i < 40; ++i)
-    table.Remove(stack0_);
-  for (int i = 0; i < 40; ++i)
-    table.Add(stack1_);
-  for (int i = 0; i < 30; ++i)
-    table.Remove(stack1_);
-  for (int i = 0; i < 30; ++i)
-    table.Remove(stack2_);
-  for (int i = 0; i < 30; ++i)
-    table.Remove(stack2_);
-  table.UpdateLastDropInfo(400);
-
-  table.GetLastUptrendInfo(stack0_, 400, &timestamp_delta, &count_delta);
-  EXPECT_EQ(0U, timestamp_delta);
-  EXPECT_EQ(0U, count_delta);
-
-  table.GetLastUptrendInfo(stack1_, 400, &timestamp_delta, &count_delta);
-  EXPECT_EQ(300U, timestamp_delta);
-  EXPECT_EQ(40U, count_delta);
-
-  table.GetLastUptrendInfo(stack2_, 400, &timestamp_delta, &count_delta);
-  EXPECT_EQ(400U, timestamp_delta);
-  EXPECT_EQ(0U, count_delta);
-
-  // Make a 0-sum sequence for |stack0_|. Introduce |stack2_| again.
-  for (int i = 0; i < 30; ++i)
-    table.Add(stack0_);
-  for (int i = 0; i < 30; ++i)
-    table.Remove(stack0_);
-  for (int i = 0; i < 40; ++i)
-    table.Add(stack2_);
-  for (int i = 0; i < 30; ++i)
-    table.Remove(stack2_);
-  table.UpdateLastDropInfo(500);
-
-  table.GetLastUptrendInfo(stack0_, 500, &timestamp_delta, &count_delta);
-  EXPECT_EQ(100U, timestamp_delta);
-  EXPECT_EQ(0U, count_delta);
-
-  table.GetLastUptrendInfo(stack2_, 500, &timestamp_delta, &count_delta);
-  EXPECT_EQ(0U, timestamp_delta);
-  EXPECT_EQ(0U, count_delta);
-}
-
 }  // namespace leak_detector
 }  // namespace metrics