[tracing] Introduce MemoryDumpArgs to enable light and heavy dumps

base/trace_event/process_memory_maps_dump_provider_unittest.cc

Index: base/trace_event/process_memory_maps_dump_provider_unittest.cc
diff --git a/base/trace_event/process_memory_maps_dump_provider_unittest.cc b/base/trace_event/process_memory_maps_dump_provider_unittest.cc
index 5416e119960f790858386de5bafb167d549da6fe..fcb9eaff4f19b2913fa12d4be5a7dc2bd42a4f27 100644
--- a/base/trace_event/process_memory_maps_dump_provider_unittest.cc
+++ b/base/trace_event/process_memory_maps_dump_provider_unittest.cc
@@ -110,6 +110,7 @@ TEST(ProcessMemoryMapsDumpProviderTest, ParseProcSmaps) {
   const uint32 kProtR = ProcessMemoryMaps::VMRegion::kProtectionFlagsRead;
   const uint32 kProtW = ProcessMemoryMaps::VMRegion::kProtectionFlagsWrite;
   const uint32 kProtX = ProcessMemoryMaps::VMRegion::kProtectionFlagsExec;
+  const MemoryDumpArgs dump_args = {MemoryDumpArgs::LEVEL_OF_DETAIL_HIGH};
 
   auto pmmdp = ProcessMemoryMapsDumpProvider::GetInstance();
 
@@ -118,21 +119,21 @@ TEST(ProcessMemoryMapsDumpProviderTest, ParseProcSmaps) {
   std::ifstream non_existent_file("/tmp/does-not-exist");
   ProcessMemoryMapsDumpProvider::proc_smaps_for_testing = &non_existent_file;
   CHECK_EQ(false, non_existent_file.good());
-  pmmdp->OnMemoryDump(&pmd_invalid);
+  pmmdp->OnMemoryDump(dump_args, &pmd_invalid);
   ASSERT_FALSE(pmd_invalid.has_process_mmaps());
 
   // Emulate an empty /proc/self/smaps.
   std::ifstream empty_file("/dev/null");
   ProcessMemoryMapsDumpProvider::proc_smaps_for_testing = &empty_file;
   CHECK_EQ(true, empty_file.good());
-  pmmdp->OnMemoryDump(&pmd_invalid);
+  pmmdp->OnMemoryDump(dump_args, &pmd_invalid);
   ASSERT_FALSE(pmd_invalid.has_process_mmaps());
 
   // Parse the 1st smaps file.
   ProcessMemoryDump pmd_1(nullptr /* session_state */);
   std::istringstream test_smaps_1(kTestSmaps1);
   ProcessMemoryMapsDumpProvider::proc_smaps_for_testing = &test_smaps_1;
-  pmmdp->OnMemoryDump(&pmd_1);
+  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());
@@ -163,7 +164,7 @@ TEST(ProcessMemoryMapsDumpProviderTest, ParseProcSmaps) {
   ProcessMemoryDump pmd_2(nullptr /* session_state */);
   std::istringstream test_smaps_2(kTestSmaps2);
   ProcessMemoryMapsDumpProvider::proc_smaps_for_testing = &test_smaps_2;
-  pmmdp->OnMemoryDump(&pmd_2);
+  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());