Remove some dead fields from isolate.h

R=jochen@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/2637923002
Cr-Commit-Position: refs/heads/master@{#42391}

src/arm/code-stubs-arm.cc

@@ -797,7 +797,6 @@ void CodeStub::GenerateFPStubs(Isolate* isolate) {
   SaveFPRegsMode mode = kSaveFPRegs;
   CEntryStub(isolate, 1, mode).GetCode();
   StoreBufferOverflowStub(isolate, mode).GetCode();
-  isolate->set_fp_stubs_generated(true);
 }
 
 

src/ia32/code-stubs-ia32.cc

@@ -1622,7 +1622,6 @@ void CodeStub::GenerateStubsAheadOfTime(Isolate* isolate) {
 void CodeStub::GenerateFPStubs(Isolate* isolate) {
   // Generate if not already in cache.
   CEntryStub(isolate, 1, kSaveFPRegs).GetCode();
-  isolate->set_fp_stubs_generated(true);
 }
 
 

src/isolate.h

@@ -383,7 +383,6 @@ class ThreadLocalTop BASE_EMBEDDED {
   V(int, bad_char_shift_table, kUC16AlphabetSize)                              \
   V(int, good_suffix_shift_table, (kBMMaxShift + 1))                           \
   V(int, suffix_table, (kBMMaxShift + 1))                                      \
-  V(uint32_t, private_random_seed, 2)                                          \
   ISOLATE_INIT_DEBUG_ARRAY_LIST(V)
 
 typedef List<HeapObject*> DebugObjectCache;
@@ -409,7 +408,6 @@ typedef List<HeapObject*> DebugObjectCache;
   V(CompilationStatistics*, turbo_statistics, nullptr)                        \
   V(HTracer*, htracer, nullptr)                                               \
   V(CodeTracer*, code_tracer, nullptr)                                        \
-  V(bool, fp_stubs_generated, false)                                          \
   V(uint32_t, per_isolate_assert_data, 0xFFFFFFFFu)                           \
   V(PromiseRejectCallback, promise_reject_callback, nullptr)                  \
   V(const v8::StartupData*, snapshot_blob, nullptr)                           \

src/mips/code-stubs-mips.cc

@@ -908,7 +908,6 @@ void CodeStub::GenerateFPStubs(Isolate* isolate) {
   SaveFPRegsMode mode = kSaveFPRegs;
   CEntryStub(isolate, 1, mode).GetCode();
   StoreBufferOverflowStub(isolate, mode).GetCode();
-  isolate->set_fp_stubs_generated(true);
 }
 
 

src/mips64/code-stubs-mips64.cc

@@ -905,7 +905,6 @@ void CodeStub::GenerateFPStubs(Isolate* isolate) {
   SaveFPRegsMode mode = kSaveFPRegs;
   CEntryStub(isolate, 1, mode).GetCode();
   StoreBufferOverflowStub(isolate, mode).GetCode();
-  isolate->set_fp_stubs_generated(true);
 }
 
 

src/ppc/code-stubs-ppc.cc

@@ -871,7 +871,6 @@ void CodeStub::GenerateFPStubs(Isolate* isolate) {
   SaveFPRegsMode mode = kSaveFPRegs;
   CEntryStub(isolate, 1, mode).GetCode();
   StoreBufferOverflowStub(isolate, mode).GetCode();
-  isolate->set_fp_stubs_generated(true);
 }
 
 

src/s390/code-stubs-s390.cc

@@ -839,7 +839,6 @@ void CodeStub::GenerateFPStubs(Isolate* isolate) {
   SaveFPRegsMode mode = kSaveFPRegs;
   CEntryStub(isolate, 1, mode).GetCode();
   StoreBufferOverflowStub(isolate, mode).GetCode();
-  isolate->set_fp_stubs_generated(true);
 }
 
 void CEntryStub::GenerateAheadOfTime(Isolate* isolate) {

src/x87/code-stubs-x87.cc

@@ -1462,7 +1462,6 @@ void CodeStub::GenerateFPStubs(Isolate* isolate) {
   if (!save_doubles.FindCodeInCache(&save_doubles_code)) {
     save_doubles_code = *(save_doubles.GetCode());
   }
-  isolate->set_fp_stubs_generated(true);
 }