Introduce an option to do regular new space growing for a while

src/heap/spaces.h

Index: src/heap/spaces.h
diff --git a/src/heap/spaces.h b/src/heap/spaces.h
index ef294b243948b3cd4bbdc5101385baf295cb8a73..ee4116a2ee79f825cbb8ef5e2a742ed484e33e0c 100644
--- a/src/heap/spaces.h
+++ b/src/heap/spaces.h
@@ -2339,7 +2339,8 @@ class NewSpace : public Space {
         to_space_(heap, kToSpace),
         from_space_(heap, kFromSpace),
         reservation_(),
-        inline_allocation_limit_step_(0) {}
+        inline_allocation_limit_step_(0),
+        grow_to_target_capacity_(false) {}
 
   // Sets up the new space using the given chunk.
   bool SetUp(int reserved_semispace_size_, int max_semi_space_size);
@@ -2569,6 +2570,10 @@ class NewSpace : public Space {
 
   SemiSpace* active_space() { return &to_space_; }
 
+  void set_grow_to_target_capacity(bool grow_to_target_capacity) {
+    grow_to_target_capacity_ = grow_to_target_capacity;
+  }
+
  private:
   // Update allocation info to match the current to-space page.
   void UpdateAllocationInfo();
@@ -2600,6 +2605,10 @@ class NewSpace : public Space {
 
   Address top_on_previous_step_;
 
+  // True if the new space should be expanded up to the target capacity
+  // when the current page is full.
+  bool grow_to_target_capacity_;
+
   HistogramInfo* allocated_histogram_;
   HistogramInfo* promoted_histogram_;