Unify some PlatformCodeStubs.

src/arm/code-stubs-arm.h

Index: src/arm/code-stubs-arm.h
diff --git a/src/arm/code-stubs-arm.h b/src/arm/code-stubs-arm.h
index eed858819286beaacae903ee15c66de2ef6d8d00..06265dd7f2289c036e34a5b52f451e494c9df90c 100644
--- a/src/arm/code-stubs-arm.h
+++ b/src/arm/code-stubs-arm.h
@@ -14,24 +14,6 @@ namespace internal {
 void ArrayNativeCode(MacroAssembler* masm, Label* call_generic_code);
 
 
-class StoreBufferOverflowStub: public PlatformCodeStub {
- public:
-  StoreBufferOverflowStub(Isolate* isolate, SaveFPRegsMode save_fp)
-      : PlatformCodeStub(isolate), save_doubles_(save_fp) {}
-
-  void Generate(MacroAssembler* masm);
-
-  static void GenerateFixedRegStubsAheadOfTime(Isolate* isolate);
-  virtual bool SometimesSetsUpAFrame() { return false; }
-
- private:
-  SaveFPRegsMode save_doubles_;
-
-  Major MajorKey() const { return StoreBufferOverflow; }
-  uint32_t MinorKey() const { return (save_doubles_ == kSaveFPRegs) ? 1 : 0; }
-};
-
-
 class StringHelper : public AllStatic {
  public:
   // Generate code for copying a large number of characters. This function
@@ -58,28 +40,6 @@ class StringHelper : public AllStatic {
   static void GenerateHashGetHash(MacroAssembler* masm,
                                   Register hash);
 
- private:
-  DISALLOW_IMPLICIT_CONSTRUCTORS(StringHelper);
-};
-
-
-class SubStringStub: public PlatformCodeStub {
- public:
-  explicit SubStringStub(Isolate* isolate) : PlatformCodeStub(isolate) {}
-
- private:
-  Major MajorKey() const { return SubString; }
-  uint32_t MinorKey() const { return 0; }
-
-  void Generate(MacroAssembler* masm);
-};
-
-
-
-class StringCompareStub: public PlatformCodeStub {
- public:
-  explicit StringCompareStub(Isolate* isolate) : PlatformCodeStub(isolate) { }
-
   // Compares two flat ASCII strings and returns result in r0.
   static void GenerateCompareFlatAsciiStrings(MacroAssembler* masm,
                                               Register left,
@@ -89,8 +49,7 @@ class StringCompareStub: public PlatformCodeStub {
                                               Register scratch3,
                                               Register scratch4);
 
-  // Compares two flat ASCII strings for equality and returns result
-  // in r0.
+  // Compares two flat ASCII strings for equality and returns result in r0.
   static void GenerateFlatAsciiStringEquals(MacroAssembler* masm,
                                             Register left,
                                             Register right,
@@ -99,10 +58,6 @@ class StringCompareStub: public PlatformCodeStub {
                                             Register scratch3);
 
  private:
-  virtual Major MajorKey() const { return StringCompare; }
-  virtual uint32_t MinorKey() const { return 0; }
-  virtual void Generate(MacroAssembler* masm);
-
   static void GenerateAsciiCharsCompareLoop(MacroAssembler* masm,
                                             Register left,
                                             Register right,
@@ -110,6 +65,8 @@ class StringCompareStub: public PlatformCodeStub {
                                             Register scratch1,
                                             Register scratch2,
                                             Label* chars_not_equal);
+
+  DISALLOW_IMPLICIT_CONSTRUCTORS(StringHelper);
 };