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/code-factory.cc b/src/code-factory.cc
index c969c8f..e68d539 100644
--- a/src/code-factory.cc
+++ b/src/code-factory.cc
@@ -20,13 +20,35 @@
 
 
 // static
+Callable CodeFactory::LoadICInOptimizedCode(Isolate* isolate,
+                                            ContextualMode mode) {
+  if (FLAG_vector_ics) {
+    return Callable(LoadIC::initialize_stub_in_optimized_code(
+                        isolate, LoadICState(mode).GetExtraICState()),
+                    VectorLoadICDescriptor(isolate));
+  }
+  return CodeFactory::LoadIC(isolate, mode);
+}
+
+
+// static
 Callable CodeFactory::KeyedLoadIC(Isolate* isolate) {
-  return Callable(isolate->builtins()->KeyedLoadIC_Initialize(),
+  return Callable(KeyedLoadIC::initialize_stub(isolate),
                   LoadDescriptor(isolate));
 }
 
 
 // static
+Callable CodeFactory::KeyedLoadICInOptimizedCode(Isolate* isolate) {
+  if (FLAG_vector_ics) {
+    return Callable(KeyedLoadIC::initialize_stub_in_optimized_code(isolate),
+                    VectorLoadICDescriptor(isolate));
+  }
+  return CodeFactory::KeyedLoadIC(isolate);
+}
+
+
+// static
 Callable CodeFactory::StoreIC(Isolate* isolate, StrictMode mode) {
   return Callable(StoreIC::initialize_stub(isolate, mode),
                   StoreDescriptor(isolate));
@@ -82,6 +104,13 @@
 
 
 // static
+Callable CodeFactory::AllocateHeapNumber(Isolate* isolate) {
+  AllocateHeapNumberStub stub(isolate);
+  return Callable(stub.GetCode(), stub.GetCallInterfaceDescriptor());
+}
+
+
+// static
 Callable CodeFactory::CallFunction(Isolate* isolate, int argc,
                                    CallFunctionFlags flags) {
   CallFunctionStub stub(isolate, argc, flags);