[tracing] Introduce MemoryDumpArgs to enable light and heavy dumps

content/common/gpu/gpu_channel.h

Index: content/common/gpu/gpu_channel.h
diff --git a/content/common/gpu/gpu_channel.h b/content/common/gpu/gpu_channel.h
index cde83df1fdc0abae0e900defc7fc6a684fe21ef9..eb7648597eea880bf6dd83f5d831499e31a6e738 100644
--- a/content/common/gpu/gpu_channel.h
+++ b/content/common/gpu/gpu_channel.h
@@ -178,7 +178,8 @@ class GpuChannel : public IPC::Listener,
   }
 
   // base::trace_event::MemoryDumpProvider implementation.
-  bool OnMemoryDump(base::trace_event::ProcessMemoryDump* pmd) override;
+  bool OnMemoryDump(const base::trace_event::MemoryDumpArgs& args,
+                    base::trace_event::ProcessMemoryDump* pmd) override;
 
  private:
   friend class GpuChannelMessageFilter;