[debugger] simplify reloc info for debug break slots.

src/assembler.h

Index: src/assembler.h
diff --git a/src/assembler.h b/src/assembler.h
index 19f79493d17efcf5fbea6fc415e66e2513eb44d7..ccfedafa074e491a4d1e032f69b9a6fc626bb061 100644
--- a/src/assembler.h
+++ b/src/assembler.h
@@ -391,7 +391,6 @@ class RelocInfo {
     DEBUG_BREAK_SLOT_AT_POSITION,
     DEBUG_BREAK_SLOT_AT_RETURN,
     DEBUG_BREAK_SLOT_AT_CALL,
-    DEBUG_BREAK_SLOT_AT_CONSTRUCT_CALL,
 
     EXTERNAL_REFERENCE,  // The address of an external C++ function.
     INTERNAL_REFERENCE,  // An address inside the same function.
@@ -484,8 +483,7 @@ class RelocInfo {
   }
   static inline bool IsDebugBreakSlot(Mode mode) {
     return IsDebugBreakSlotAtPosition(mode) || IsDebugBreakSlotAtReturn(mode) ||
-           IsDebugBreakSlotAtCall(mode) ||
-           IsDebugBreakSlotAtConstructCall(mode);
+           IsDebugBreakSlotAtCall(mode);
   }
   static inline bool IsDebugBreakSlotAtPosition(Mode mode) {
     return mode == DEBUG_BREAK_SLOT_AT_POSITION;
@@ -496,9 +494,6 @@ class RelocInfo {
   static inline bool IsDebugBreakSlotAtCall(Mode mode) {
     return mode == DEBUG_BREAK_SLOT_AT_CALL;
   }
-  static inline bool IsDebugBreakSlotAtConstructCall(Mode mode) {
-    return mode == DEBUG_BREAK_SLOT_AT_CONSTRUCT_CALL;
-  }
   static inline bool IsDebuggerStatement(Mode mode) {
     return mode == DEBUGGER_STATEMENT;
   }
@@ -537,9 +532,6 @@ class RelocInfo {
   // constant pool, otherwise the pointer is embedded in the instruction stream.
   bool IsInConstantPool();
 
-  static int DebugBreakCallArgumentsCount(intptr_t data);
-
-  // Read/modify the code target in the branch/call instruction
   // this relocation applies to;
   // can only be called if IsCodeTarget(rmode_) || IsRuntimeEntry(rmode_)
   INLINE(Address target_address());
@@ -649,9 +641,9 @@ class RelocInfo {
   static const int kPositionMask = 1 << POSITION | 1 << STATEMENT_POSITION;
   static const int kDataMask =
       (1 << CODE_TARGET_WITH_ID) | kPositionMask | (1 << COMMENT);
-  static const int kDebugBreakSlotMask =
-      1 << DEBUG_BREAK_SLOT_AT_POSITION | 1 << DEBUG_BREAK_SLOT_AT_RETURN |
-      1 << DEBUG_BREAK_SLOT_AT_CALL | 1 << DEBUG_BREAK_SLOT_AT_CONSTRUCT_CALL;
+  static const int kDebugBreakSlotMask = 1 << DEBUG_BREAK_SLOT_AT_POSITION |
+                                         1 << DEBUG_BREAK_SLOT_AT_RETURN |
+                                         1 << DEBUG_BREAK_SLOT_AT_CALL;
   static const int kApplyMask;  // Modes affected by apply.  Depends on arch.
 
  private: