Add BACKGROUND dump mode to various GPU/CC MemoryDumpProviders

gpu/command_buffer/service/buffer_manager.cc

Index: gpu/command_buffer/service/buffer_manager.cc
diff --git a/gpu/command_buffer/service/buffer_manager.cc b/gpu/command_buffer/service/buffer_manager.cc
index f28f26ca3e920df2e82af1089c858b7959c63b86..681c69c3444016344fec463e13c4ae1614a6a69e 100644
--- a/gpu/command_buffer/service/buffer_manager.cc
+++ b/gpu/command_buffer/service/buffer_manager.cc
@@ -643,25 +643,36 @@ void BufferManager::SetPrimitiveRestartFixedIndexIfNecessary(GLenum type) {
 
 bool BufferManager::OnMemoryDump(const base::trace_event::MemoryDumpArgs& args,
                                  base::trace_event::ProcessMemoryDump* pmd) {
-  const uint64_t share_group_tracing_guid =
-      memory_tracker_->ShareGroupTracingGUID();
-  for (const auto& buffer_entry : buffers_) {
-    const auto& client_buffer_id = buffer_entry.first;
-    const auto& buffer = buffer_entry.second;
+  using base::trace_event::MemoryAllocatorDump;
+  using base::trace_event::MemoryDumpLevelOfDetail;
 
+  if (args.level_of_detail == MemoryDumpLevelOfDetail::BACKGROUND) {
     std::string dump_name =
-        base::StringPrintf("gpu/gl/buffers/share_group_%" PRIu64 "/buffer_%d",
-                           share_group_tracing_guid, client_buffer_id);
-    base::trace_event::MemoryAllocatorDump* dump =
-        pmd->CreateAllocatorDump(dump_name);
-    dump->AddScalar(base::trace_event::MemoryAllocatorDump::kNameSize,
-                    base::trace_event::MemoryAllocatorDump::kUnitsBytes,
-                    static_cast<uint64_t>(buffer->size()));
-
-    auto guid = gl::GetGLBufferGUIDForTracing(share_group_tracing_guid,
-                                              client_buffer_id);
-    pmd->CreateSharedGlobalAllocatorDump(guid);
-    pmd->AddOwnershipEdge(dump->guid(), guid);
+        base::StringPrintf("gpu/gl/buffers/share_group_%" PRIu64 "",
+                           memory_tracker_->ShareGroupTracingGUID());
+    MemoryAllocatorDump* dump = pmd->CreateAllocatorDump(dump_name);
+    dump->AddScalar(MemoryAllocatorDump::kNameSize,
+                    MemoryAllocatorDump::kUnitsBytes, mem_represented());

[ssid, 2016/10/07 00:07:21]

ditto

[ericrk, 2016/10/13 23:58:13]

Done.

+  } else {
+    const uint64_t share_group_tracing_guid =
+        memory_tracker_->ShareGroupTracingGUID();
+    for (const auto& buffer_entry : buffers_) {
+      const auto& client_buffer_id = buffer_entry.first;
+      const auto& buffer = buffer_entry.second;
+
+      std::string dump_name =
+          base::StringPrintf("gpu/gl/buffers/share_group_%" PRIu64 "/buffer_%d",
+                             share_group_tracing_guid, client_buffer_id);
+      MemoryAllocatorDump* dump = pmd->CreateAllocatorDump(dump_name);
+      dump->AddScalar(MemoryAllocatorDump::kNameSize,
+                      MemoryAllocatorDump::kUnitsBytes,
+                      static_cast<uint64_t>(buffer->size()));
+
+      auto guid = gl::GetGLBufferGUIDForTracing(share_group_tracing_guid,
+                                                client_buffer_id);
+      pmd->CreateSharedGlobalAllocatorDump(guid);
+      pmd->AddOwnershipEdge(dump->guid(), guid);
+    }
   }
   return true;
 }