Refactor FrameAndConstantPoolScope and ConstantPoolUnavailableScope to be architecture independent

src/ia32/assembler-ia32.h

Index: src/ia32/assembler-ia32.h
diff --git a/src/ia32/assembler-ia32.h b/src/ia32/assembler-ia32.h
index 7a828c796779ec11ba336a56676a16ea632cd102..fe9f880e771bfc567d211b58420b674f11439be6 100644
--- a/src/ia32/assembler-ia32.h
+++ b/src/ia32/assembler-ia32.h
@@ -1098,6 +1098,8 @@ class Assembler : public AssemblerBase {
   // Generate the constant pool for the generated code.
   void PopulateConstantPool(ConstantPoolArray* constant_pool);
 
+  bool is_constant_pool_available() const { return false; }
+
  protected:
   void emit_sse_operand(XMMRegister reg, const Operand& adr);
   void emit_sse_operand(XMMRegister dst, XMMRegister src);
@@ -1106,6 +1108,11 @@ class Assembler : public AssemblerBase {
 
   byte* addr_at(int pos) { return buffer_ + pos; }
 
+  void set_constant_pool_available(bool available) {
+    // Constant pool is not supported on ia32.
+    UNREACHABLE();
+  }
+
 
  private:
   uint32_t long_at(int pos)  {
@@ -1160,6 +1167,10 @@ class Assembler : public AssemblerBase {
   friend class CodePatcher;
   friend class EnsureSpace;
 
+  // constant pool
+  friend class FrameAndConstantPoolScope;
+  friend class ConstantPoolUnavailableScope;
+
   // code generation
   RelocInfoWriter reloc_info_writer;