Implement the getRequestDetails api in chrome side.

skia/ext/SkTraceMemoryDump_chrome.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 "skia/ext/SkTraceMemoryDump_chrome.h"
 
 #include "base/trace_event/memory_allocator_dump.h"
 #include "base/trace_event/memory_dump_manager.h"
 #include "base/trace_event/process_memory_dump.h"
 #include "skia/ext/SkDiscardableMemory_chrome.h"
 
 namespace skia {
 
 namespace {
 const char kMallocBackingType[] = "malloc";
 }
 
 SkTraceMemoryDump_Chrome::SkTraceMemoryDump_Chrome(
+    base::trace_event::MemoryDumpLevelOfDetail level_of_detail,
     base::trace_event::ProcessMemoryDump* process_memory_dump)
-    : SkTraceMemoryDump_Chrome("", process_memory_dump) {}
+    : SkTraceMemoryDump_Chrome("", level_of_detail, process_memory_dump) {}
 
 SkTraceMemoryDump_Chrome::SkTraceMemoryDump_Chrome(
-    const char* dump_name_prefix,
+    const std::string& dump_name_prefix,
+    base::trace_event::MemoryDumpLevelOfDetail level_of_detail,
     base::trace_event::ProcessMemoryDump* process_memory_dump)
     : dump_name_prefix_(dump_name_prefix),
-      process_memory_dump_(process_memory_dump) {}
+      process_memory_dump_(process_memory_dump),
+      request_level_(
+          level_of_detail == base::trace_event::MemoryDumpLevelOfDetail::LIGHT
+              ? SkTraceMemoryDump::kLight_LevelOfDetail
+              : SkTraceMemoryDump::kObjectsBreakdowns_LevelOfDetail) {}
 
 SkTraceMemoryDump_Chrome::~SkTraceMemoryDump_Chrome() {}
 
 void SkTraceMemoryDump_Chrome::dumpNumericValue(const char* dumpName,
                                                 const char* valueName,
                                                 const char* units,
                                                 uint64_t value) {
   auto dump = GetOrCreateAllocatorDump(dumpName);
   dump->AddScalar(valueName, units, value);
 }
@@ skipping 20 matching lines @@
     const SkDiscardableMemory& discardableMemoryObject) {
   std::string name = dump_name_prefix_ + dumpName;
   DCHECK(!process_memory_dump_->GetAllocatorDump(name));
   const SkDiscardableMemoryChrome& discardable_memory_obj =
       static_cast<const SkDiscardableMemoryChrome&>(discardableMemoryObject);
   auto dump = discardable_memory_obj.CreateMemoryAllocatorDump(
       name.c_str(), process_memory_dump_);
   DCHECK(dump);
 }
 
+SkTraceMemoryDump::LevelOfDetail SkTraceMemoryDump_Chrome::getRequestedDetails()
+    const {
+  return request_level_;
+}
+
 base::trace_event::MemoryAllocatorDump*
 SkTraceMemoryDump_Chrome::GetOrCreateAllocatorDump(const char* dumpName) {
   std::string name = dump_name_prefix_ + dumpName;
   auto dump = process_memory_dump_->GetAllocatorDump(name);
   if (!dump)
     dump = process_memory_dump_->CreateAllocatorDump(name);
   return dump;
 }
 
 }  // namespace skia