[tracing] Sanitize process memory dumps for background mode

components/tracing/common/process_metrics_memory_dump_provider_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 "components/tracing/common/process_metrics_memory_dump_provider.h"
 
 #include <stdint.h>
 
 #include <memory>
 
@@ skipping 109 matching lines @@
 
 }  // namespace
 #endif  // defined(OS_LINUX) || defined(OS_ANDROID)
 
 TEST(ProcessMetricsMemoryDumpProviderTest, DumpRSS) {
   const base::trace_event::MemoryDumpArgs high_detail_args = {
       base::trace_event::MemoryDumpLevelOfDetail::DETAILED};
   std::unique_ptr<ProcessMetricsMemoryDumpProvider> pmtdp(
       new ProcessMetricsMemoryDumpProvider(base::kNullProcessId));
   std::unique_ptr<base::trace_event::ProcessMemoryDump> pmd_before(
-      new base::trace_event::ProcessMemoryDump(nullptr));
+      new base::trace_event::ProcessMemoryDump(nullptr, high_detail_args));
   std::unique_ptr<base::trace_event::ProcessMemoryDump> pmd_after(
-      new base::trace_event::ProcessMemoryDump(nullptr));
+      new base::trace_event::ProcessMemoryDump(nullptr, high_detail_args));
 
   ProcessMetricsMemoryDumpProvider::rss_bytes_for_testing = 1024;
   pmtdp->OnMemoryDump(high_detail_args, pmd_before.get());
 
   // Pretend that the RSS of the process increased of +1M.
   const size_t kAllocSize = 1048576;
   ProcessMetricsMemoryDumpProvider::rss_bytes_for_testing += kAllocSize;
 
   pmtdp->OnMemoryDump(high_detail_args, pmd_after.get());
 
@@ skipping 20 matching lines @@
       base::trace_event::ProcessMemoryMaps::VMRegion::kProtectionFlagsWrite;
   const uint32_t kProtX =
       base::trace_event::ProcessMemoryMaps::VMRegion::kProtectionFlagsExec;
   const base::trace_event::MemoryDumpArgs dump_args = {
       base::trace_event::MemoryDumpLevelOfDetail::DETAILED};
 
   std::unique_ptr<ProcessMetricsMemoryDumpProvider> pmmdp(
       new ProcessMetricsMemoryDumpProvider(base::kNullProcessId));
 
   // Emulate an empty /proc/self/smaps.
-  base::trace_event::ProcessMemoryDump pmd_invalid(nullptr /* session_state */);
+  base::trace_event::ProcessMemoryDump pmd_invalid(nullptr /* session_state */,
+                                                   dump_args);
   base::ScopedFILE empty_file(OpenFile(base::FilePath("/dev/null"), "r"));
   ASSERT_TRUE(empty_file.get());
   ProcessMetricsMemoryDumpProvider::proc_smaps_for_testing = empty_file.get();
   pmmdp->OnMemoryDump(dump_args, &pmd_invalid);
   ASSERT_FALSE(pmd_invalid.has_process_mmaps());
 
   // Parse the 1st smaps file.
-  base::trace_event::ProcessMemoryDump pmd_1(nullptr /* session_state */);
+  base::trace_event::ProcessMemoryDump pmd_1(nullptr /* session_state */,
+                                             dump_args);
   base::ScopedFILE temp_file1;
   CreateAndSetSmapsFileForTesting(kTestSmaps1, temp_file1);
   ProcessMetricsMemoryDumpProvider::proc_smaps_for_testing = temp_file1.get();
   pmmdp->OnMemoryDump(dump_args, &pmd_1);
   ASSERT_TRUE(pmd_1.has_process_mmaps());
   const auto& regions_1 = pmd_1.process_mmaps()->vm_regions();
   ASSERT_EQ(2UL, regions_1.size());
 
   EXPECT_EQ(0x00400000UL, regions_1[0].start_address);
   EXPECT_EQ(0x004be000UL - 0x00400000UL, regions_1[0].size_in_bytes);
@@ skipping 11 matching lines @@
   EXPECT_EQ(kProtW, regions_1[1].protection_flags);
   EXPECT_EQ("/file/name with space", regions_1[1].mapped_file);
   EXPECT_EQ(128 * 1024UL, regions_1[1].byte_stats_proportional_resident);
   EXPECT_EQ(120 * 1024UL, regions_1[1].byte_stats_shared_clean_resident);
   EXPECT_EQ(4 * 1024UL, regions_1[1].byte_stats_shared_dirty_resident);
   EXPECT_EQ(60 * 1024UL, regions_1[1].byte_stats_private_clean_resident);
   EXPECT_EQ(8 * 1024UL, regions_1[1].byte_stats_private_dirty_resident);
   EXPECT_EQ(0 * 1024UL, regions_1[1].byte_stats_swapped);
 
   // Parse the 2nd smaps file.
-  base::trace_event::ProcessMemoryDump pmd_2(nullptr /* session_state */);
+  base::trace_event::ProcessMemoryDump pmd_2(nullptr /* session_state */,
+                                             dump_args);
   base::ScopedFILE temp_file2;
   CreateAndSetSmapsFileForTesting(kTestSmaps2, temp_file2);
   ProcessMetricsMemoryDumpProvider::proc_smaps_for_testing = temp_file2.get();
   pmmdp->OnMemoryDump(dump_args, &pmd_2);
   ASSERT_TRUE(pmd_2.has_process_mmaps());
   const auto& regions_2 = pmd_2.process_mmaps()->vm_regions();
   ASSERT_EQ(1UL, regions_2.size());
   EXPECT_EQ(0x7fe7ce79c000UL, regions_2[0].start_address);
   EXPECT_EQ(0x7fe7ce7a8000UL - 0x7fe7ce79c000UL, regions_2[0].size_in_bytes);
   EXPECT_EQ(0U, regions_2[0].protection_flags);
   EXPECT_EQ("", regions_2[0].mapped_file);
   EXPECT_EQ(32 * 1024UL, regions_2[0].byte_stats_proportional_resident);
   EXPECT_EQ(16 * 1024UL, regions_2[0].byte_stats_shared_clean_resident);
   EXPECT_EQ(12 * 1024UL, regions_2[0].byte_stats_shared_dirty_resident);
   EXPECT_EQ(8 * 1024UL, regions_2[0].byte_stats_private_clean_resident);
   EXPECT_EQ(4 * 1024UL, regions_2[0].byte_stats_private_dirty_resident);
   EXPECT_EQ(0 * 1024UL, regions_2[0].byte_stats_swapped);
 }
 #endif  // defined(OS_LINUX) || defined(OS_ANDROID)
 
 }  // namespace tracing