Add tracing for GL texture objects

cc/resources/resource_provider.h

Index: cc/resources/resource_provider.h
diff --git a/cc/resources/resource_provider.h b/cc/resources/resource_provider.h
index fbed140aa00686dfc37dab9882b0b6bc13699b08..1247c55e2786ecf0cdad726c47f798491462510b 100644
--- a/cc/resources/resource_provider.h
+++ b/cc/resources/resource_provider.h
@@ -17,6 +17,8 @@
 #include "base/memory/linked_ptr.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/threading/thread_checker.h"
+#include "base/trace_event/memory_allocator_dump.h"
+#include "base/trace_event/memory_dump_provider.h"
 #include "cc/base/cc_export.h"
 #include "cc/base/resource_id.h"
 #include "cc/output/context_provider.h"
@@ -57,7 +59,8 @@ class SharedBitmapManager;
 
 // This class is not thread-safe and can only be called from the thread it was
 // created on (in practice, the impl thread).
-class CC_EXPORT ResourceProvider {
+class CC_EXPORT ResourceProvider
+    : public base::trace_event::MemoryDumpProvider {
  private:
   struct Resource;
 
@@ -86,7 +89,7 @@ class CC_EXPORT ResourceProvider {
       bool use_rgba_4444_texture_format,
       size_t id_allocation_chunk_size,
       bool use_persistent_map_for_gpu_memory_buffers);
-  virtual ~ResourceProvider();
+  ~ResourceProvider() override;
 
   void DidLoseOutputSurface() { lost_output_surface_ = true; }
 
@@ -438,6 +441,9 @@ class CC_EXPORT ResourceProvider {
 
   void ValidateResource(ResourceId id) const;
 
+  // base::trace_event::MemoryDumpProvider implementation.
+  bool OnMemoryDump(base::trace_event::ProcessMemoryDump* pmd) override;
+
  protected:
   ResourceProvider(OutputSurface* output_surface,
                    SharedBitmapManager* shared_bitmap_manager,
@@ -570,6 +576,11 @@ class CC_EXPORT ResourceProvider {
   gpu::gles2::GLES2Interface* ContextGL() const;
   class GrContext* GrContext(bool worker_context) const;
 
+  base::trace_event::MemoryAllocatorDump* DumpForResource(
+      base::trace_event::ProcessMemoryDump* pmd,
+      const ResourceId& id,

[reveman, 2015/07/28 21:38:49]

nit: no need to pass the id by reference

[ericrk, 2015/07/29 18:46:46]

removed this fn.

+      const Resource& resource) const;
+
   OutputSurface* output_surface_;
   SharedBitmapManager* shared_bitmap_manager_;
   gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager_;