[tracing] Introduce MemoryDumpArgs to enable light and heavy dumps

content/browser/gpu/browser_gpu_memory_buffer_manager.h

Index: content/browser/gpu/browser_gpu_memory_buffer_manager.h
diff --git a/content/browser/gpu/browser_gpu_memory_buffer_manager.h b/content/browser/gpu/browser_gpu_memory_buffer_manager.h
index 6a3d13bb278f9209811d489e2c020d159e16fd10..e02d495567c5fd02bbcfab677731ea1a24a0781d 100644
--- a/content/browser/gpu/browser_gpu_memory_buffer_manager.h
+++ b/content/browser/gpu/browser_gpu_memory_buffer_manager.h
@@ -41,7 +41,8 @@ class CONTENT_EXPORT BrowserGpuMemoryBufferManager
                                uint32 sync_point) override;
 
   // Overridden from base::trace_event::MemoryDumpProvider:
-  bool OnMemoryDump(base::trace_event::ProcessMemoryDump* pmd) override;
+  bool OnMemoryDump(const base::trace_event::MemoryDumpArgs& args,
+                    base::trace_event::ProcessMemoryDump* pmd) override;
 
   // Virtual for testing.
   virtual scoped_ptr<gfx::GpuMemoryBuffer> AllocateGpuMemoryBufferForScanout(