[tracing] Introduce MemoryDumpArgs to enable light and heavy dumps

The memory dump providers dump a lot of details at each dump which
causes the trace size to be huge. So, this CL introduces MemoryDumpArgs
that will be passed to each DumpProvider as an argument of OnMemoryDump.
The args specify a high or low level of detail. This provides a means to
request a light or heavy dump from the providers when necessary.

TBR=reed@google.com, jam@chromium.org
BUG=499731
CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel

Review URL: https://codereview.chromium.org/1262333005

Cr-Commit-Position: refs/heads/master@{#342103}

2 files changed, 4 insertions, 2 deletions

diff --git a/gpu/command_buffer/service/texture_manager.cc b/gpu/command_buffer/service/texture_manager.cc
index 4a9d6fd..ed0fd10 100644
--- a/gpu/command_buffer/service/texture_manager.cc
+++ b/gpu/command_buffer/service/texture_manager.cc
@@ -2042,7 +2042,8 @@ ScopedTextureUploadTimer::~ScopedTextureUploadTimer() {
       base::TimeTicks::Now() - begin_time_;
 }
 
-bool TextureManager::OnMemoryDump(base::trace_event::ProcessMemoryDump* pmd) {
+bool TextureManager::OnMemoryDump(const base::trace_event::MemoryDumpArgs& args,
+                                  base::trace_event::ProcessMemoryDump* pmd) {
   for (const auto& resource : textures_) {
     // Only dump memory info for textures actually owned by this TextureManager.
     DumpTextureRef(pmd, resource.second.get());
diff --git a/gpu/command_buffer/service/texture_manager.h b/gpu/command_buffer/service/texture_manager.h
index 62444c0..e97feb3 100644
--- a/gpu/command_buffer/service/texture_manager.h
+++ b/gpu/command_buffer/service/texture_manager.h
@@ -868,7 +868,8 @@ class GPU_EXPORT TextureManager : public base::trace_event::MemoryDumpProvider {
     GLenum format, GLenum type, GLenum internal_format, GLint level);
 
   // 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 Texture;