CodeCleanup: eliminate unnecessary base class and make the children unvirtual.

I found some strange split in deopt entry points generator.
The code for table entry generator had two classes.
It is safe to join these classes together and drop virtual.

BUG=
LOG=n

Review URL: https://codereview.chromium.org/1010413003

Cr-Commit-Position: refs/heads/master@{#27264}

src/arm/deoptimizer-arm.cc

@@ -135,7 +135,7 @@ bool Deoptimizer::HasAlignmentPadding(JSFunction* function) {
 
 // This code tries to be close to ia32 code so that any changes can be
 // easily ported.
-void Deoptimizer::EntryGenerator::Generate() {
+void Deoptimizer::TableEntryGenerator::Generate() {
   GeneratePrologue();
 
   // Save all general purpose registers before messing with them.

src/arm64/deoptimizer-arm64.cc

@@ -115,7 +115,7 @@ void Deoptimizer::CopyDoubleRegisters(FrameDescription* output_frame) {
 
 #define __ masm()->
 
-void Deoptimizer::EntryGenerator::Generate() {
+void Deoptimizer::TableEntryGenerator::Generate() {
   GeneratePrologue();
 
   // TODO(all): This code needs to be revisited. We probably only need to save

src/deoptimizer.h

@@ -322,11 +322,10 @@ class Deoptimizer : public Malloced {
   static const int kNotDeoptimizationEntry = -1;
 
   // Generators for the deoptimization entry code.
-  class EntryGenerator BASE_EMBEDDED {
+  class TableEntryGenerator BASE_EMBEDDED {
    public:
-    EntryGenerator(MacroAssembler* masm, BailoutType type)
-        : masm_(masm), type_(type) { }
-    virtual ~EntryGenerator() { }
+    TableEntryGenerator(MacroAssembler* masm, BailoutType type, int count)
+        : masm_(masm), type_(type), count_(count) {}
 
     void Generate();
 
@@ -335,24 +334,13 @@ class Deoptimizer : public Malloced {
     BailoutType type() const { return type_; }
     Isolate* isolate() const { return masm_->isolate(); }
 
-    virtual void GeneratePrologue() { }
-
-   private:
-    MacroAssembler* masm_;
-    Deoptimizer::BailoutType type_;
-  };
-
-  class TableEntryGenerator : public EntryGenerator {
-   public:
-    TableEntryGenerator(MacroAssembler* masm, BailoutType type,  int count)
-        : EntryGenerator(masm, type), count_(count) { }
-
-   protected:
-    virtual void GeneratePrologue();
+    void GeneratePrologue();
 
    private:
     int count() const { return count_; }
 
+    MacroAssembler* masm_;
+    Deoptimizer::BailoutType type_;
     int count_;
   };
 

src/ia32/deoptimizer-ia32.cc

@@ -228,7 +228,7 @@ bool Deoptimizer::HasAlignmentPadding(JSFunction* function) {
 
 #define __ masm()->
 
-void Deoptimizer::EntryGenerator::Generate() {
+void Deoptimizer::TableEntryGenerator::Generate() {
   GeneratePrologue();
 
   // Save all general purpose registers before messing with them.

src/mips/deoptimizer-mips.cc

@@ -132,7 +132,7 @@ bool Deoptimizer::HasAlignmentPadding(JSFunction* function) {
 
 // This code tries to be close to ia32 code so that any changes can be
 // easily ported.
-void Deoptimizer::EntryGenerator::Generate() {
+void Deoptimizer::TableEntryGenerator::Generate() {
   GeneratePrologue();
 
   // Unlike on ARM we don't save all the registers, just the useful ones.

src/mips64/deoptimizer-mips64.cc

@@ -131,7 +131,7 @@ bool Deoptimizer::HasAlignmentPadding(JSFunction* function) {
 
 // This code tries to be close to ia32 code so that any changes can be
 // easily ported.
-void Deoptimizer::EntryGenerator::Generate() {
+void Deoptimizer::TableEntryGenerator::Generate() {
   GeneratePrologue();
 
   // Unlike on ARM we don't save all the registers, just the useful ones.

src/ppc/deoptimizer-ppc.cc

@@ -142,7 +142,7 @@ bool Deoptimizer::HasAlignmentPadding(JSFunction* function) {
 
 // This code tries to be close to ia32 code so that any changes can be
 // easily ported.
-void Deoptimizer::EntryGenerator::Generate() {
+void Deoptimizer::TableEntryGenerator::Generate() {
   GeneratePrologue();
 
   // Unlike on ARM we don't save all the registers, just the useful ones.

src/x64/deoptimizer-x64.cc

@@ -134,7 +134,7 @@ bool Deoptimizer::HasAlignmentPadding(JSFunction* function) {
 
 #define __ masm()->
 
-void Deoptimizer::EntryGenerator::Generate() {
+void Deoptimizer::TableEntryGenerator::Generate() {
   GeneratePrologue();
 
   // Save all general purpose registers before messing with them.

src/x87/deoptimizer-x87.cc

@@ -228,7 +228,7 @@ bool Deoptimizer::HasAlignmentPadding(JSFunction* function) {
 
 #define __ masm()->
 
-void Deoptimizer::EntryGenerator::Generate() {
+void Deoptimizer::TableEntryGenerator::Generate() {
   GeneratePrologue();
 
   // Save all general purpose registers before messing with them.