Instrument ContextCacheController::OnIdle for postmortem reports

gpu/command_buffer/client/gles2_implementation.cc

Index: gpu/command_buffer/client/gles2_implementation.cc
diff --git a/gpu/command_buffer/client/gles2_implementation.cc b/gpu/command_buffer/client/gles2_implementation.cc
index fde1339e7f578cf12ab79fbbca90c78acff92b50..ab0285e31e263c1f1a7095ffd8c6997a257cbe21 100644
--- a/gpu/command_buffer/client/gles2_implementation.cc
+++ b/gpu/command_buffer/client/gles2_implementation.cc
@@ -20,6 +20,7 @@
 #include "base/atomic_sequence_num.h"
 #include "base/bits.h"
 #include "base/compiler_specific.h"
+#include "base/debug/activity_tracker.h"
 #include "base/numerics/safe_math.h"
 #include "base/strings/string_split.h"
 #include "base/strings/stringprintf.h"
@@ -418,7 +419,15 @@ void GLES2Implementation::SetAggressivelyFreeResources(
                "aggressively_free_resources", aggressively_free_resources);
   aggressively_free_resources_ = aggressively_free_resources;
 
+  // TODO(manzagop): remove ScopedActivity once crbug.com/703342 is fixed.
+  const uint32_t kActivityId =
+      0x92094cf4;  // SHA1(GLES2Implementation::SetAggressivelyFreeResources)
+
   if (aggressively_free_resources_ && helper_->HaveRingBuffer()) {
+    // TODO(manzagop): remove ScopedActivity once crbug.com/703342 is fixed.
+    base::debug::ScopedActivity activity_flush(0, kActivityId,
+                                               aggressively_free_resources);
+
     // Ensure that we clean up as much cache memory as possible and fully flush.
     FlushDriverCachesCHROMIUM();
 
@@ -426,6 +435,9 @@ void GLES2Implementation::SetAggressivelyFreeResources(
     // |aggressively_free_resources_| is true.
     Flush();
   } else {
+    // TODO(manzagop): remove ScopedActivity once crbug.com/703342 is fixed.
+    base::debug::ScopedActivity activity_shallow_flush(
+        0, kActivityId + 1, aggressively_free_resources);
     ShallowFlushCHROMIUM();
   }
 }