Added page to Observatory to display native memory allocation information.

runtime/vm/profiler_service.h

Index: runtime/vm/profiler_service.h
diff --git a/runtime/vm/profiler_service.h b/runtime/vm/profiler_service.h
index d9205b3b7a1ee851107a8f1778c3f4e0d1de36b1..8045906e14442710f4cfed8e2663d27a4d32f1a6 100644
--- a/runtime/vm/profiler_service.h
+++ b/runtime/vm/profiler_service.h
@@ -29,6 +29,7 @@ class ProfileCodeTable;
 class RawCode;
 class RawFunction;
 class SampleFilter;
+class ProcessedSample;
 class ProcessedSampleBuffer;
 
 class ProfileFunctionSourcePosition {
@@ -257,7 +258,18 @@ class ProfileTrieNode : public ZoneAllocated {
 
   intptr_t count() const { return count_; }
 
-  void Tick() { count_++; }
+  void Tick(ProcessedSample* sample, bool exclusive = false);
+
+  void IncrementAllocation(intptr_t allocation, bool exclusive) {
+    ASSERT(allocation >= 0);
+    if (exclusive) {
+      exclusive_allocations_ += allocation;
+    }
+    inclusive_allocations_ += allocation;
+  }
+
+  intptr_t inclusive_allocations() const { return inclusive_allocations_; }
+  intptr_t exclusive_allocations() const { return exclusive_allocations_; }
 
   intptr_t NumChildren() const { return children_.length(); }
 
@@ -284,6 +296,8 @@ class ProfileTrieNode : public ZoneAllocated {
 
   intptr_t table_index_;
   intptr_t count_;
+  intptr_t exclusive_allocations_;
+  intptr_t inclusive_allocations_;
   ZoneGrowableArray<ProfileTrieNode*> children_;
   intptr_t frame_id_;
 
@@ -378,6 +392,10 @@ class ProfileTrieWalker : public ValueObject {
   intptr_t CurrentInclusiveTicks();
   // Return the current node's peer's exclusive tick count.
   intptr_t CurrentExclusiveTicks();
+  // Return the current node's inclusive allocation count.
+  intptr_t CurrentInclusiveAllocations();
+  // Return the current node's exclusive allocation count.
+  intptr_t CurrentExclusiveAllocations();
   // Return the current node's tick count.
   intptr_t CurrentNodeTickCount();
   // Return the number siblings (including yourself).