Revert "Sort and group network stats collected from eBPF."

This reverts commit 7b03736655caacdfad68f3e95a63464ce6bab972.

Reason for revert: This CL caused serious bug in android build. See b/119193941

Change-Id: I99a3d01bfa594592465ca43aa74bb31cb41f495e
diff --git a/libnetdbpf/BpfNetworkStatsTest.cpp b/libnetdbpf/BpfNetworkStatsTest.cpp
index 432d9fc..64dc7d4 100644
--- a/libnetdbpf/BpfNetworkStatsTest.cpp
+++ b/libnetdbpf/BpfNetworkStatsTest.cpp
@@ -431,108 +431,14 @@
     ASSERT_EQ(0,
               parseBpfNetworkStatsDevInternal(&lines, mFakeIfaceStatsMap, mFakeIfaceIndexNameMap));
     ASSERT_EQ((unsigned long)4, lines.size());
-
+    std::sort(lines.begin(), lines.end(), [](const auto& line1, const auto& line2)-> bool {
+        return strcmp(line1.iface, line2.iface) < 0;
+    });
     expectStatsLineEqual(value1, IFACE_NAME1, UID_ALL, SET_ALL, TAG_NONE, lines[0]);
     expectStatsLineEqual(value1, IFACE_NAME3, UID_ALL, SET_ALL, TAG_NONE, lines[1]);
     expectStatsLineEqual(value2, IFACE_NAME2, UID_ALL, SET_ALL, TAG_NONE, lines[2]);
     ASSERT_EQ(0, strcmp(TRUNCATED_IFACE_NAME, lines[3].iface));
     expectStatsLineEqual(value2, TRUNCATED_IFACE_NAME, UID_ALL, SET_ALL, TAG_NONE, lines[3]);
 }
-
-TEST_F(BpfNetworkStatsHelperTest, TestGetStatsSortedAndGrouped) {
-    SKIP_IF_BPF_NOT_SUPPORTED;
-
-    // Create iface indexes with duplicate iface name.
-    updateIfaceMap(IFACE_NAME1, IFACE_INDEX1);
-    updateIfaceMap(IFACE_NAME2, IFACE_INDEX2);
-    updateIfaceMap(IFACE_NAME1, IFACE_INDEX3);  // Duplicate!
-
-    StatsValue value1 = {
-            .rxBytes = TEST_BYTES0,
-            .rxPackets = TEST_PACKET0,
-            .txBytes = TEST_BYTES1,
-            .txPackets = TEST_PACKET1,
-    };
-    StatsValue value2 = {
-            .rxBytes = TEST_BYTES1,
-            .rxPackets = TEST_PACKET1,
-            .txBytes = TEST_BYTES0,
-            .txPackets = TEST_PACKET0,
-    };
-    StatsValue value3 = {
-            .rxBytes = TEST_BYTES0 * 2,
-            .rxPackets = TEST_PACKET0 * 2,
-            .txBytes = TEST_BYTES1 * 2,
-            .txPackets = TEST_PACKET1 * 2,
-    };
-
-    std::vector<stats_line> lines;
-    std::vector<std::string> ifaces;
-
-    // Test empty stats.
-    ASSERT_EQ(0, parseBpfNetworkStatsDetailInternal(&lines, ifaces, TAG_ALL, UID_ALL,
-                                                    mFakeTagStatsMap, mFakeIfaceIndexNameMap));
-    ASSERT_EQ((size_t) 0, lines.size());
-    lines.clear();
-
-    // Test 1 line stats.
-    populateFakeStats(TEST_UID1, TEST_TAG, IFACE_INDEX1, TEST_COUNTERSET0, value1,
-                      mFakeTagStatsMap);
-    ASSERT_EQ(0, parseBpfNetworkStatsDetailInternal(&lines, ifaces, TAG_ALL, UID_ALL,
-                                                    mFakeTagStatsMap, mFakeIfaceIndexNameMap));
-    ASSERT_EQ((size_t) 1, lines.size());
-    expectStatsLineEqual(value1, IFACE_NAME1, TEST_UID1, TEST_COUNTERSET0, TEST_TAG, lines[0]);
-    lines.clear();
-
-    // These items should not be grouped.
-    populateFakeStats(TEST_UID1, TEST_TAG, IFACE_INDEX2, TEST_COUNTERSET0, value2,
-                      mFakeTagStatsMap);
-    populateFakeStats(TEST_UID1, TEST_TAG, IFACE_INDEX3, TEST_COUNTERSET1, value2,
-                      mFakeTagStatsMap);
-    populateFakeStats(TEST_UID1, TEST_TAG + 1, IFACE_INDEX1, TEST_COUNTERSET0, value2,
-                      mFakeTagStatsMap);
-    populateFakeStats(TEST_UID2, TEST_TAG, IFACE_INDEX1, TEST_COUNTERSET0, value1,
-                      mFakeTagStatsMap);
-    ASSERT_EQ(0, parseBpfNetworkStatsDetailInternal(&lines, ifaces, TAG_ALL, UID_ALL,
-                                                    mFakeTagStatsMap, mFakeIfaceIndexNameMap));
-    ASSERT_EQ((size_t) 5, lines.size());
-    lines.clear();
-
-    // These items should be grouped.
-    populateFakeStats(TEST_UID1, TEST_TAG, IFACE_INDEX3, TEST_COUNTERSET0, value1,
-                      mFakeTagStatsMap);
-    populateFakeStats(TEST_UID2, TEST_TAG, IFACE_INDEX3, TEST_COUNTERSET0, value1,
-                      mFakeTagStatsMap);
-
-    ASSERT_EQ(0, parseBpfNetworkStatsDetailInternal(&lines, ifaces, TAG_ALL, UID_ALL,
-                                                    mFakeTagStatsMap, mFakeIfaceIndexNameMap));
-    ASSERT_EQ((size_t) 5, lines.size());
-
-    // Verify Sorted & Grouped.
-    expectStatsLineEqual(value3, IFACE_NAME1, TEST_UID1, TEST_COUNTERSET0, TEST_TAG, lines[0]);
-    expectStatsLineEqual(value2, IFACE_NAME1, TEST_UID1, TEST_COUNTERSET1, TEST_TAG, lines[1]);
-    expectStatsLineEqual(value2, IFACE_NAME1, TEST_UID1, TEST_COUNTERSET0, TEST_TAG + 1, lines[2]);
-    expectStatsLineEqual(value3, IFACE_NAME1, TEST_UID2, TEST_COUNTERSET0, TEST_TAG, lines[3]);
-    expectStatsLineEqual(value2, IFACE_NAME2, TEST_UID1, TEST_COUNTERSET0, TEST_TAG, lines[4]);
-    lines.clear();
-
-    // Perform test on IfaceStats.
-    uint32_t ifaceStatsKey = IFACE_INDEX2;
-    EXPECT_TRUE(isOk(mFakeIfaceStatsMap.writeValue(ifaceStatsKey, value2, BPF_ANY)));
-    ifaceStatsKey = IFACE_INDEX1;
-    EXPECT_TRUE(isOk(mFakeIfaceStatsMap.writeValue(ifaceStatsKey, value1, BPF_ANY)));
-
-    // This should be grouped.
-    ifaceStatsKey = IFACE_INDEX3;
-    EXPECT_TRUE(isOk(mFakeIfaceStatsMap.writeValue(ifaceStatsKey, value1, BPF_ANY)));
-
-    ASSERT_EQ(0,
-              parseBpfNetworkStatsDevInternal(&lines, mFakeIfaceStatsMap, mFakeIfaceIndexNameMap));
-    ASSERT_EQ((size_t) 2, lines.size());
-
-    expectStatsLineEqual(value3, IFACE_NAME1, UID_ALL, SET_ALL, TAG_NONE, lines[0]);
-    expectStatsLineEqual(value2, IFACE_NAME2, UID_ALL, SET_ALL, TAG_NONE, lines[1]);
-    lines.clear();
-}
 }  // namespace bpf
 }  // namespace android