Revert of [arm] Share constant pool entries in snapshot.

src/arm/assembler-arm.h

Index: src/arm/assembler-arm.h
diff --git a/src/arm/assembler-arm.h b/src/arm/assembler-arm.h
index b9f022a5ab7aec40e2017e85fddcebb78d6377f1..a6284937235dcfb54defad7cf9b659db7ca884eb 100644
--- a/src/arm/assembler-arm.h
+++ b/src/arm/assembler-arm.h
@@ -1726,9 +1726,6 @@
   std::vector<ConstantPoolEntry> pending_32_bit_constants_;
   std::vector<ConstantPoolEntry> pending_64_bit_constants_;
 
-  // Map of address of handle to index in pending_32_bit_constants_.
-  std::map<Address, int> handle_to_index_map_;
-
  private:
   // Avoid overflows for displacements etc.
   static const int kMaximalBufferSize = 512 * MB;
@@ -1787,9 +1784,10 @@
 
   // Record reloc info for current pc_
   void RecordRelocInfo(RelocInfo::Mode rmode, intptr_t data = 0);
-  void ConstantPoolAddEntry(int position, RelocInfo::Mode rmode,
-                            intptr_t value);
-  void ConstantPoolAddEntry(int position, double value);
+  ConstantPoolEntry::Access ConstantPoolAddEntry(int position,
+                                                 RelocInfo::Mode rmode,
+                                                 intptr_t value);
+  ConstantPoolEntry::Access ConstantPoolAddEntry(int position, double value);
 
   friend class RelocInfo;
   friend class CodePatcher;