Add configurable limit to allocations in heap profiler.

base/trace_event/trace_config.h

Index: base/trace_event/trace_config.h
diff --git a/base/trace_event/trace_config.h b/base/trace_event/trace_config.h
index 72ca5f868785691b7686fef576f6eb59218c4592..e18749d35b7dd454f17d940fc6c6ad8cd7ddc0eb 100644
--- a/base/trace_event/trace_config.h
+++ b/base/trace_event/trace_config.h
@@ -147,6 +147,9 @@ class BASE_EXPORT TraceConfig {
   bool IsSamplingEnabled() const { return enable_sampling_; }
   bool IsSystraceEnabled() const { return enable_systrace_; }
   bool IsArgumentFilterEnabled() const { return enable_argument_filter_; }
+  size_t GetMinAllocationSizeBytes() const {
+    return min_allocation_size_bytes_;
+  }
 
   void SetTraceRecordMode(TraceRecordMode mode) { record_mode_ = mode; }
   void EnableSampling() { enable_sampling_ = true; }
@@ -189,6 +192,9 @@ class BASE_EXPORT TraceConfig {
   FRIEND_TEST_ALL_PREFIXES(TraceConfigTest, LegacyStringToMemoryDumpConfig);
   FRIEND_TEST_ALL_PREFIXES(TraceConfigTest, EmptyMemoryDumpConfigTest);
 
+  // Default value for |min_allocation_size_bytes_|.
+  static const int kDefaultMinAllocationSizeBytes = 1024;

[ssid, 2016/04/20 23:06:51]

1024 might be a very low value. It could make the trace huge. Maybe we should
see how many dumps can fit in trace file after this change and before this
change in a similar test.

+
   // The default trace config, used when none is provided.
   // Allows all non-disabled-by-default categories through, except if they end
   // in the suffix 'Debug' or 'Test'.
@@ -239,6 +245,7 @@ class BASE_EXPORT TraceConfig {
   bool enable_argument_filter_ : 1;
 
   MemoryDumpConfig memory_dump_config_;
+  size_t min_allocation_size_bytes_;
 
   StringList included_categories_;
   StringList disabled_categories_;