[tracing] Introduce MemoryDumpArgs to enable light and heavy dumps

media/filters/vpx_video_decoder.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.
 
 #include "media/filters/vpx_video_decoder.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
@@ skipping 84 matching lines @@
   // being used by libvpx. Parameters:
   // |user_priv|  Private data passed to libvpx (pointer to memory pool).
   // |fb|         Pointer to the frame buffer that's being released.
   static int32 ReleaseVP9FrameBuffer(void *user_priv,
                                      vpx_codec_frame_buffer *fb);
 
   // Generates a "no_longer_needed" closure that holds a reference
   // to this pool.
   base::Closure CreateFrameCallback(void* fb_priv_data);
 
-  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 base::RefCountedThreadSafe<VpxVideoDecoder::MemoryPool>;
   ~MemoryPool() override;
 
   // Reference counted frame buffers used for VP9 decoding. Reference counting
   // is done manually because both chromium and libvpx has to release this
   // before a buffer can be re-used.
   struct VP9FrameBuffer {
     VP9FrameBuffer() : ref_cnt(0) {}
@@ skipping 71 matching lines @@
 base::Closure VpxVideoDecoder::MemoryPool::CreateFrameCallback(
     void* fb_priv_data) {
   VP9FrameBuffer* frame_buffer = static_cast<VP9FrameBuffer*>(fb_priv_data);
   ++frame_buffer->ref_cnt;
   return BindToCurrentLoop(
              base::Bind(&MemoryPool::OnVideoFrameDestroyed, this,
                         frame_buffer));
 }
 
 bool VpxVideoDecoder::MemoryPool::OnMemoryDump(
+    const base::trace_event::MemoryDumpArgs& args,
     base::trace_event::ProcessMemoryDump* pmd) {
   base::trace_event::MemoryAllocatorDump* memory_dump =
       pmd->CreateAllocatorDump("media/vpx/memory_pool");
   base::trace_event::MemoryAllocatorDump* used_memory_dump =
       pmd->CreateAllocatorDump("media/vpx/memory_pool/used");
 
   pmd->AddSuballocation(memory_dump->guid(),
                         base::trace_event::MemoryDumpManager::GetInstance()
                             ->system_allocator_pool_name());
   size_t bytes_used = 0;
@@ skipping 364 matching lines @@
         vpx_image->stride[VPX_PLANE_Y], vpx_image->d_h, video_frame->get());
     return;
   }
   CopyAPlane(vpx_image_alpha->planes[VPX_PLANE_Y],
              vpx_image_alpha->stride[VPX_PLANE_Y],
              vpx_image_alpha->d_h,
              video_frame->get());
 }
 
 }  // namespace media