Update V8 to r3121 as required for WebKit update.

Change-Id: Ic53e0aef9a9eb9b71ee7d25a8aef61520bba899c
diff --git a/src/builtins.cc b/src/builtins.cc
index afb5427..fa1b34e 100644
--- a/src/builtins.cc
+++ b/src/builtins.cc
@@ -538,6 +538,44 @@
 }
 
 
+static void Generate_KeyedLoadIC_ExternalByteArray(MacroAssembler* masm) {
+  KeyedLoadIC::GenerateExternalArray(masm, kExternalByteArray);
+}
+
+
+static void Generate_KeyedLoadIC_ExternalUnsignedByteArray(
+    MacroAssembler* masm) {
+  KeyedLoadIC::GenerateExternalArray(masm, kExternalUnsignedByteArray);
+}
+
+
+static void Generate_KeyedLoadIC_ExternalShortArray(MacroAssembler* masm) {
+  KeyedLoadIC::GenerateExternalArray(masm, kExternalShortArray);
+}
+
+
+static void Generate_KeyedLoadIC_ExternalUnsignedShortArray(
+    MacroAssembler* masm) {
+  KeyedLoadIC::GenerateExternalArray(masm, kExternalUnsignedShortArray);
+}
+
+
+static void Generate_KeyedLoadIC_ExternalIntArray(MacroAssembler* masm) {
+  KeyedLoadIC::GenerateExternalArray(masm, kExternalIntArray);
+}
+
+
+static void Generate_KeyedLoadIC_ExternalUnsignedIntArray(
+    MacroAssembler* masm) {
+  KeyedLoadIC::GenerateExternalArray(masm, kExternalUnsignedIntArray);
+}
+
+
+static void Generate_KeyedLoadIC_ExternalFloatArray(MacroAssembler* masm) {
+  KeyedLoadIC::GenerateExternalArray(masm, kExternalFloatArray);
+}
+
+
 static void Generate_KeyedLoadIC_PreMonomorphic(MacroAssembler* masm) {
   KeyedLoadIC::GeneratePreMonomorphic(masm);
 }
@@ -567,6 +605,44 @@
 }
 
 
+static void Generate_KeyedStoreIC_ExternalByteArray(MacroAssembler* masm) {
+  KeyedStoreIC::GenerateExternalArray(masm, kExternalByteArray);
+}
+
+
+static void Generate_KeyedStoreIC_ExternalUnsignedByteArray(
+    MacroAssembler* masm) {
+  KeyedStoreIC::GenerateExternalArray(masm, kExternalUnsignedByteArray);
+}
+
+
+static void Generate_KeyedStoreIC_ExternalShortArray(MacroAssembler* masm) {
+  KeyedStoreIC::GenerateExternalArray(masm, kExternalShortArray);
+}
+
+
+static void Generate_KeyedStoreIC_ExternalUnsignedShortArray(
+    MacroAssembler* masm) {
+  KeyedStoreIC::GenerateExternalArray(masm, kExternalUnsignedShortArray);
+}
+
+
+static void Generate_KeyedStoreIC_ExternalIntArray(MacroAssembler* masm) {
+  KeyedStoreIC::GenerateExternalArray(masm, kExternalIntArray);
+}
+
+
+static void Generate_KeyedStoreIC_ExternalUnsignedIntArray(
+    MacroAssembler* masm) {
+  KeyedStoreIC::GenerateExternalArray(masm, kExternalUnsignedIntArray);
+}
+
+
+static void Generate_KeyedStoreIC_ExternalFloatArray(MacroAssembler* masm) {
+  KeyedStoreIC::GenerateExternalArray(masm, kExternalFloatArray);
+}
+
+
 static void Generate_KeyedStoreIC_ExtendStorage(MacroAssembler* masm) {
   KeyedStoreIC::GenerateExtendStorage(masm);
 }