Update V8 to version 4.1.0.21

This is a cherry-pick of all commits up to and including the
4.1.0.21 cherry-pick in Chromium.

Original commit message:

Version 4.1.0.21 (cherry-pick)

Merged 206e9136bde0f2b5ae8cb77afbb1e7833e5bd412

Unlink pages from the space page list after evacuation.

BUG=430201
LOG=N
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/953813002

Cr-Commit-Position: refs/branch-heads/4.1@{#22}
Cr-Branched-From: 2e08d2a7aa9d65d269d8c57aba82eb38a8cb0a18-refs/heads/candidates@{#25353}

---

FPIIM-449

Change-Id: I8c23c7bbb70772b4858fe8a47b64fa97ee0d1f8c
diff --git a/src/interface-descriptors.h b/src/interface-descriptors.h
index b773c91..5d02e84 100644
--- a/src/interface-descriptors.h
+++ b/src/interface-descriptors.h
@@ -16,6 +16,7 @@
 #define INTERFACE_DESCRIPTOR_LIST(V)          \
   V(Load)                                     \
   V(Store)                                    \
+  V(StoreTransition)                          \
   V(ElementTransitionAndStore)                \
   V(Instanceof)                               \
   V(VectorLoadICTrampoline)                   \
@@ -32,6 +33,7 @@
   V(CallConstruct)                            \
   V(RegExpConstructResult)                    \
   V(TransitionElementsKind)                   \
+  V(AllocateHeapNumber)                       \
   V(ArrayConstructorConstantArgCount)         \
   V(ArrayConstructor)                         \
   V(InternalArrayConstructorConstantArgCount) \
@@ -162,7 +164,7 @@
 
   static const Register ContextRegister();
 
-  const char* DebugName(Isolate* isolate);
+  const char* DebugName(Isolate* isolate) const;
 
  protected:
   const CallInterfaceDescriptorData* data() const { return data_; }
@@ -213,6 +215,22 @@
 };
 
 
+class StoreTransitionDescriptor : public StoreDescriptor {
+ public:
+  DECLARE_DESCRIPTOR(StoreTransitionDescriptor, StoreDescriptor)
+
+  // Extends StoreDescriptor with Map parameter.
+  enum ParameterIndices {
+    kReceiverIndex,
+    kNameIndex,
+    kValueIndex,
+    kMapIndex,
+    kParameterCount
+  };
+  static const Register MapRegister();
+};
+
+
 class ElementTransitionAndStoreDescriptor : public StoreDescriptor {
  public:
   DECLARE_DESCRIPTOR(ElementTransitionAndStoreDescriptor, StoreDescriptor)
@@ -329,6 +347,12 @@
 };
 
 
+class AllocateHeapNumberDescriptor : public CallInterfaceDescriptor {
+ public:
+  DECLARE_DESCRIPTOR(AllocateHeapNumberDescriptor, CallInterfaceDescriptor)
+};
+
+
 class ArrayConstructorConstantArgCountDescriptor
     : public CallInterfaceDescriptor {
  public: