deps: revert ABI breaking changes in V8 6.2

Below is the list of changes:

    [ABI] deps: move new PARSER value to end of enum

    [ABI] deps: revert 749b9c062ea from upstream V8

    Original commit message:

        Remove deprecated allow code-gen callback

        BUG=chromium:732736
        R=marja@chromium.org

        Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
        Change-Id: I2c0a96b76ae977e53a418d22175bcc487f548786
        Reviewed-on: https://chromium-review.googlesource.com/543238
        Reviewed-by: Marja Hölttä <marja@chromium.org>
        Commit-Queue: Jochen Eisinger <jochen@chromium.org>
        Cr-Commit-Position: refs/heads/master@{#47509}

    [ABI] deps: reorder InstanceType enum for ABI compat

    [ABI] deps: restore HeapProfiler::GetProfilerMemorySize()

    Reimplemented as a method returning 0.

    [ABI] deps: partially revert a5f321cd9bf

    Remove default arguments from `Context::SetDefaultContext()`
    and `Context::New()`.

    Refs: v8/v8@a5f321cd9bf

    [ABI] deps: revert change to ComputeMaxSemiSpaceSize

    Refs: v8/v8@2178bba

PR-URL: #16413

Author: addaleax

deps/v8/include/v8-profiler.h

@@ -809,6 +809,9 @@ class V8_EXPORT HeapProfiler {
    */
   static const uint16_t kPersistentHandleNoClassId = 0;
 
+  /** Returns memory used for profiler internal data and snapshots. */
+  size_t GetProfilerMemorySize();
+
  private:
   HeapProfiler();
   ~HeapProfiler();

deps/v8/include/v8.h

@@ -1729,12 +1729,12 @@ class V8_EXPORT StackFrame {
 enum StateTag {
   JS,
   GC,
-  PARSER,
-  BYTECODE_COMPILER,
   COMPILER,
   OTHER,
   EXTERNAL,
-  IDLE
+  IDLE,
+  PARSER,
+  BYTECODE_COMPILER
 };
 
 // A RegisterState represents the current state of registers used
@@ -6348,6 +6348,8 @@ typedef void (*FailedAccessCheckCallback)(Local<Object> target,
  * Callback to check if code generation from strings is allowed. See
  * Context::AllowCodeGenerationFromStrings.
  */
+typedef bool (*DeprecatedAllowCodeGenerationFromStringsCallback)(
+    Local<Context> context);
 typedef bool (*AllowCodeGenerationFromStringsCallback)(Local<Context> context,
                                                        Local<String> source);
 
@@ -7636,6 +7638,9 @@ class V8_EXPORT Isolate {
    */
   void SetAllowCodeGenerationFromStringsCallback(
       AllowCodeGenerationFromStringsCallback callback);
+  V8_DEPRECATED("Use callback with source parameter.",
+                void SetAllowCodeGenerationFromStringsCallback(
+                    DeprecatedAllowCodeGenerationFromStringsCallback callback));
 
   /**
    * Embedder over{ride|load} injection points for wasm APIs. The expectation
@@ -7796,6 +7801,15 @@ class V8_EXPORT V8 {
       "Use isolate version",
       void SetFatalErrorHandler(FatalErrorCallback that));
 
+  /**
+   * Set the callback to invoke to check if code generation from
+   * strings should be allowed.
+   */
+  V8_INLINE static V8_DEPRECATED(
+      "Use isolate version",
+      void SetAllowCodeGenerationFromStringsCallback(
+          DeprecatedAllowCodeGenerationFromStringsCallback that));
+
   /**
   * Check if V8 is dead and therefore unusable.  This is the case after
   * fatal errors such as out-of-memory situations.
@@ -8205,12 +8219,8 @@ class V8_EXPORT SnapshotCreator {
    * Set the default context to be included in the snapshot blob.
    * The snapshot will not contain the global proxy, and we expect one or a
    * global object template to create one, to be provided upon deserialization.
-   *
-   * \param callback optional callback to serialize internal fields.
    */
-  void SetDefaultContext(Local<Context> context,
-                         SerializeInternalFieldsCallback callback =
-                             SerializeInternalFieldsCallback());
+  void SetDefaultContext(Local<Context> context);
 
   /**
    * Add additional context to be included in the snapshot blob.
@@ -8562,9 +8572,7 @@ class V8_EXPORT Context {
   static Local<Context> New(
       Isolate* isolate, ExtensionConfiguration* extensions = NULL,
       MaybeLocal<ObjectTemplate> global_template = MaybeLocal<ObjectTemplate>(),
-      MaybeLocal<Value> global_object = MaybeLocal<Value>(),
-      DeserializeInternalFieldsCallback internal_fields_deserializer =
-          DeserializeInternalFieldsCallback());
+      MaybeLocal<Value> global_object = MaybeLocal<Value>());
 
   /**
    * Create a new context from a (non-default) context snapshot. There
@@ -9021,8 +9029,8 @@ class Internals {
   static const int kNodeIsIndependentShift = 3;
   static const int kNodeIsActiveShift = 4;
 
-  static const int kJSApiObjectType = 0xbd;
-  static const int kJSObjectType = 0xbe;
+  static const int kJSApiObjectType = 0xbb;
+  static const int kJSObjectType = 0xbc;
   static const int kFirstNonstringType = 0x80;
   static const int kOddballType = 0x82;
   static const int kForeignType = 0x86;
@@ -10275,6 +10283,14 @@ void* Context::GetAlignedPointerFromEmbedderData(int index) {
 #endif
 }
 
+void V8::SetAllowCodeGenerationFromStringsCallback(
+    DeprecatedAllowCodeGenerationFromStringsCallback callback) {
+  Isolate* isolate = Isolate::GetCurrent();
+  isolate->SetAllowCodeGenerationFromStringsCallback(
+      reinterpret_cast<AllowCodeGenerationFromStringsCallback>(callback));
+}
+
+
 bool V8::IsDead() {
   Isolate* isolate = Isolate::GetCurrent();
   return isolate->IsDead();

deps/v8/src/api.cc

@@ -597,16 +597,16 @@ Isolate* SnapshotCreator::GetIsolate() {
   return SnapshotCreatorData::cast(data_)->isolate_;
 }
 
-void SnapshotCreator::SetDefaultContext(
-    Local<Context> context, SerializeInternalFieldsCallback callback) {
+void SnapshotCreator::SetDefaultContext(Local<Context> context) {
   DCHECK(!context.IsEmpty());
   SnapshotCreatorData* data = SnapshotCreatorData::cast(data_);
   DCHECK(!data->created_);
   DCHECK(data->default_context_.IsEmpty());
   Isolate* isolate = data->isolate_;
   CHECK_EQ(isolate, context->GetIsolate());
   data->default_context_.Reset(isolate, context);
-  data->default_embedder_fields_serializer_ = callback;
+  data->default_embedder_fields_serializer_ =
+      v8::SerializeInternalFieldsCallback();
 }
 
 size_t SnapshotCreator::AddContext(Local<Context> context,
@@ -6559,10 +6559,9 @@ Local<Context> NewContext(
 Local<Context> v8::Context::New(
     v8::Isolate* external_isolate, v8::ExtensionConfiguration* extensions,
     v8::MaybeLocal<ObjectTemplate> global_template,
-    v8::MaybeLocal<Value> global_object,
-    DeserializeInternalFieldsCallback internal_fields_deserializer) {
+    v8::MaybeLocal<Value> global_object) {
   return NewContext(external_isolate, extensions, global_template,
-                    global_object, 0, internal_fields_deserializer);
+                    global_object, 0, v8::DeserializeInternalFieldsCallback());
 }
 
 MaybeLocal<Context> v8::Context::FromSnapshot(
@@ -9052,6 +9051,13 @@ void Isolate::SetAllowCodeGenerationFromStringsCallback(
   isolate->set_allow_code_gen_callback(callback);
 }
 
+void Isolate::SetAllowCodeGenerationFromStringsCallback(
+    DeprecatedAllowCodeGenerationFromStringsCallback callback) {
+  i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
+  isolate->set_allow_code_gen_callback(
+      reinterpret_cast<AllowCodeGenerationFromStringsCallback>(callback));
+}
+
 #define CALLBACK_SETTER(ExternalName, Type, InternalName)      \
   void Isolate::Set##ExternalName(Type callback) {             \
     i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this); \
@@ -10509,6 +10515,10 @@ void HeapProfiler::SetGetRetainerInfosCallback(
       callback);
 }
 
+size_t HeapProfiler::GetProfilerMemorySize() {
+  return 0;
+}
+
 v8::Testing::StressType internal::Testing::stress_type_ =
     v8::Testing::kStressTypeOpt;
 

deps/v8/src/heap/heap.h

@@ -1303,7 +1303,7 @@ class Heap {
 
   static size_t ComputeMaxSemiSpaceSize(uint64_t physical_memory) {
     const uint64_t min_physical_memory = 512 * MB;
-    const uint64_t max_physical_memory = 3 * static_cast<uint64_t>(GB);
+    const uint64_t max_physical_memory = 2 * static_cast<uint64_t>(GB);
 
     uint64_t capped_physical_memory =
         Max(Min(physical_memory, max_physical_memory), min_physical_memory);

deps/v8/src/objects.h

@@ -384,10 +384,10 @@ const int kStubMinorKeyBits = kSmiValueSize - kStubMajorKeyBits - 1;
   V(JS_MODULE_NAMESPACE_TYPE)                                   \
   V(JS_SPECIAL_API_OBJECT_TYPE)                                 \
   V(JS_VALUE_TYPE)                                              \
-  V(JS_MESSAGE_OBJECT_TYPE)                                     \
-  V(JS_DATE_TYPE)                                               \
   V(JS_API_OBJECT_TYPE)                                         \
   V(JS_OBJECT_TYPE)                                             \
+  V(JS_MESSAGE_OBJECT_TYPE)                                     \
+  V(JS_DATE_TYPE)                                               \
   V(JS_ARGUMENTS_TYPE)                                          \
   V(JS_CONTEXT_EXTENSION_OBJECT_TYPE)                           \
   V(JS_GENERATOR_OBJECT_TYPE)                                   \
@@ -741,11 +741,11 @@ enum InstanceType : uint8_t {
   // interceptors.
   JS_SPECIAL_API_OBJECT_TYPE,  // LAST_SPECIAL_RECEIVER_TYPE
   JS_VALUE_TYPE,               // LAST_CUSTOM_ELEMENTS_RECEIVER
-  JS_MESSAGE_OBJECT_TYPE,
-  JS_DATE_TYPE,
   // Like JS_OBJECT_TYPE, but created from API function.
   JS_API_OBJECT_TYPE,
   JS_OBJECT_TYPE,
+  JS_MESSAGE_OBJECT_TYPE,
+  JS_DATE_TYPE,
   JS_ARGUMENTS_TYPE,
   JS_CONTEXT_EXTENSION_OBJECT_TYPE,
   JS_GENERATOR_OBJECT_TYPE,