Make profiler work without Instructions -> Code pointer

runtime/vm/object.h

Index: runtime/vm/object.h
diff --git a/runtime/vm/object.h b/runtime/vm/object.h
index 5b2beafd917a68348092b40a863985287600f6f3..69bd6f448dc0ae451f8be66260097168035c61c4 100644
--- a/runtime/vm/object.h
+++ b/runtime/vm/object.h
@@ -3741,13 +3741,6 @@ class Instructions : public Object {
  public:
   intptr_t size() const { return raw_ptr()->size_; }  // Excludes HeaderSize().
 
-  RawCode* code() const {
-    // This should only be accessed when jitting.
-    // TODO(johnmccutchan): Remove code back pointer.
-    ASSERT(!Dart::IsRunningPrecompiledCode());
-    return raw_ptr()->code_;
-  }
-
   uword EntryPoint() const {
     return reinterpret_cast<uword>(raw_ptr()) + HeaderSize();
   }
@@ -3786,10 +3779,6 @@ class Instructions : public Object {
     StoreNonPointer(&raw_ptr()->size_, size);
   }
 
-  void set_code(RawCode* code) const {
-    StorePointer(&raw_ptr()->code_, code);
-  }
-
   // New is a private method as RawInstruction and RawCode objects should
   // only be created using the Code::FinalizeCode method. This method creates
   // the RawInstruction and RawCode objects, sets up the pointer offsets
@@ -4422,22 +4411,6 @@ class Code : public Object {
   class AliveBit : public BitField<bool, kAliveBit, 1> {};
   class PtrOffBits : public BitField<intptr_t, kPtrOffBit, kPtrOffSize> {};
 
-  // An object finder visitor interface.
-  class FindRawCodeVisitor : public FindObjectVisitor {
-   public:
-    explicit FindRawCodeVisitor(uword pc)
-        : FindObjectVisitor(Isolate::Current()), pc_(pc) { }
-    virtual ~FindRawCodeVisitor() { }
-
-    // Check if object matches find condition.
-    virtual bool FindObject(RawObject* obj) const;
-
-   private:
-    const uword pc_;
-
-    DISALLOW_COPY_AND_ASSIGN(FindRawCodeVisitor);
-  };
-
   class SlowFindRawCodeVisitor : public FindObjectVisitor {
    public:
     explicit SlowFindRawCodeVisitor(uword pc)