Moved buffer handling to AssemblerBase.

src/mips/assembler-mips.h

Index: src/mips/assembler-mips.h
diff --git a/src/mips/assembler-mips.h b/src/mips/assembler-mips.h
index db797ce9dc7b2c1a5f791dd2c0716712627fbb29..75d110a36cb2f3530e937fc90102a3dc4ca1dcfd 100644
--- a/src/mips/assembler-mips.h
+++ b/src/mips/assembler-mips.h
@@ -523,7 +523,7 @@ class Assembler : public AssemblerBase {
   // is too small, a fatal error occurs. No deallocation of the buffer is done
   // upon destruction of the assembler.
   Assembler(Isolate* isolate, void* buffer, int buffer_size);
-  ~Assembler();
+  virtual ~Assembler() { }
 
   // GetCode emits any pending (non-emitted) code and fills the descriptor
   // desc. GetCode() is idempotent; it returns the same result if no other
@@ -943,8 +943,6 @@ class Assembler : public AssemblerBase {
   void db(uint8_t data);
   void dd(uint32_t data);
 
-  int32_t pc_offset() const { return pc_ - buffer_; }
-
   PositionsRecorder* positions_recorder() { return &positions_recorder_; }
 
   // Postpone the generation of the trampoline pool for the specified number of
@@ -1087,13 +1085,6 @@ class Assembler : public AssemblerBase {
   }
 
  private:
-  // Code buffer:
-  // The buffer into which code and relocation info are generated.
-  byte* buffer_;
-  int buffer_size_;
-  // True if the assembler owns the buffer, false if buffer is external.
-  bool own_buffer_;
-
   // Buffer size and constant pool distance are checked together at regular
   // intervals of kBufferCheckInterval emitted bytes.
   static const int kBufferCheckInterval = 1*KB/2;
@@ -1104,7 +1095,6 @@ class Assembler : public AssemblerBase {
   // not have to check for overflow. The same is true for writes of large
   // relocation info entries.
   static const int kGap = 32;
-  byte* pc_;  // The program counter - moves forward.
 
 
   // Repeated checking whether the trampoline pool should be emitted is rather