Add BACKGROUND dump mode to various GPU/CC MemoryDumpProviders

gpu/command_buffer/client/cmd_buffer_helper.cc

 // Copyright (c) 2012 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.
 
 // This file contains the implementation of the command buffer helper class.
 
 #include "gpu/command_buffer/client/cmd_buffer_helper.h"
 
 #include <stdint.h>
 
@@ skipping 322 matching lines @@
     return current_get_offset - put_ - 1;
   } else {
     return current_get_offset + total_entry_count_ - put_ -
            (current_get_offset == 0 ? 1 : 0);
   }
 }
 
 bool CommandBufferHelper::OnMemoryDump(
     const base::trace_event::MemoryDumpArgs& args,
     base::trace_event::ProcessMemoryDump* pmd) {
+  using base::trace_event::MemoryAllocatorDump;
+  using base::trace_event::MemoryDumpLevelOfDetail;
+
   if (!HaveRingBuffer())
     return true;
 
   const uint64_t tracing_process_id =
       base::trace_event::MemoryDumpManager::GetInstance()
           ->GetTracingProcessId();
 
-  base::trace_event::MemoryAllocatorDump* dump =
-      pmd->CreateAllocatorDump(base::StringPrintf(
-          "gpu/command_buffer_memory/buffer_%d", ring_buffer_id_));
-  dump->AddScalar(base::trace_event::MemoryAllocatorDump::kNameSize,
-                  base::trace_event::MemoryAllocatorDump::kUnitsBytes,
-                  ring_buffer_size_);
-  dump->AddScalar("free_size",
-                  base::trace_event::MemoryAllocatorDump::kUnitsBytes,
-                  GetTotalFreeEntriesNoWaiting() * sizeof(CommandBufferEntry));
-  auto guid = GetBufferGUIDForTracing(tracing_process_id, ring_buffer_id_);
-  const int kImportance = 2;
-  pmd->CreateSharedGlobalAllocatorDump(guid);
-  pmd->AddOwnershipEdge(dump->guid(), guid, kImportance);
+  MemoryAllocatorDump* dump = pmd->CreateAllocatorDump(base::StringPrintf(
+      "gpu/command_buffer_memory/buffer_%d", ring_buffer_id_));
+  dump->AddScalar(MemoryAllocatorDump::kNameSize,
+                  MemoryAllocatorDump::kUnitsBytes, ring_buffer_size_);
+
+  if (args.level_of_detail != MemoryDumpLevelOfDetail::BACKGROUND) {
+    dump->AddScalar(
+        "free_size", MemoryAllocatorDump::kUnitsBytes,
+        GetTotalFreeEntriesNoWaiting() * sizeof(CommandBufferEntry));
+    auto guid = GetBufferGUIDForTracing(tracing_process_id, ring_buffer_id_);
+    const int kImportance = 2;
+    pmd->CreateSharedGlobalAllocatorDump(guid);
+    pmd->AddOwnershipEdge(dump->guid(), guid, kImportance);
+  }
 
   return true;
 }
 
 }  // namespace gpu