Made zone segments aligned in memory and included a pointer to the zone in the header. Larger objec…

src/base/platform/platform.h

Index: src/base/platform/platform.h
diff --git a/src/base/platform/platform.h b/src/base/platform/platform.h
index d3b6c9c1cf3d758276ccc39c50a20b51fc9f9f98..4f4d6070ea399459db41d0941430b1259fd67eca 100644
--- a/src/base/platform/platform.h
+++ b/src/base/platform/platform.h
@@ -308,7 +308,7 @@ class VirtualMemory {
   ~VirtualMemory();
 
   // Returns whether the memory has been reserved.
-  bool IsReserved();
+  bool IsReserved() const;
 
   // Initialize or resets an embedded VirtualMemory object.
   void Reset();
@@ -317,7 +317,7 @@ class VirtualMemory {
   // If the memory was reserved with an alignment, this address is not
   // necessarily aligned. The user might need to round it up to a multiple of
   // the alignment to get the start of the aligned block.
-  void* address() {
+  void* address() const {
     DCHECK(IsReserved());
     return address_;
   }
@@ -326,7 +326,7 @@ class VirtualMemory {
   // meaningful when IsReserved() returns true.
   // If the memory was reserved with an alignment, this size may be larger
   // than the requested size.
-  size_t size() { return size_; }
+  size_t size() const { return size_; }
 
   // Commits real memory. Returns whether the operation succeeded.
   bool Commit(void* address, size_t size, bool is_executable);