Implement the getRequestDetails api in chrome side.

skia/ext/SkTraceMemoryDump_chrome.cc

Index: skia/ext/SkTraceMemoryDump_chrome.cc
diff --git a/skia/ext/SkTraceMemoryDump_chrome.cc b/skia/ext/SkTraceMemoryDump_chrome.cc
index a5309047630f61f095fa7977f713d904cac2927b..c4bda0cd67210ca3ccbfa3424c1beff721298317 100644
--- a/skia/ext/SkTraceMemoryDump_chrome.cc
+++ b/skia/ext/SkTraceMemoryDump_chrome.cc
@@ -16,14 +16,20 @@ 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() {}
 
@@ -64,6 +70,11 @@ void SkTraceMemoryDump_Chrome::setDiscardableMemoryBacking(
   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;