Revert r9901 to make tree green again.

src/x64/lithium-x64.h

Index: src/x64/lithium-x64.h
===================================================================
--- src/x64/lithium-x64.h	(revision 9901)
+++ src/x64/lithium-x64.h	(working copy)
@@ -109,10 +109,8 @@
   V(IsConstructCallAndBranch)                   \
   V(IsNilAndBranch)                             \
   V(IsObjectAndBranch)                          \
-  V(IsStringAndBranch)                          \
   V(IsSmiAndBranch)                             \
   V(IsUndetectableAndBranch)                    \
-  V(StringCompareAndBranch)                    \
   V(JSArrayLength)                              \
   V(Label)                                      \
   V(LazyBailout)                                \
@@ -642,19 +640,6 @@
 };
 
 
-class LIsStringAndBranch: public LControlInstruction<1, 0> {
- public:
-  explicit LIsStringAndBranch(LOperand* value) {
-    inputs_[0] = value;
-  }
-
-  DECLARE_CONCRETE_INSTRUCTION(IsStringAndBranch, "is-string-and-branch")
-  DECLARE_HYDROGEN_ACCESSOR(IsStringAndBranch)
-
-  virtual void PrintDataTo(StringStream* stream);
-};
-
-
 class LIsSmiAndBranch: public LControlInstruction<1, 0> {
  public:
   explicit LIsSmiAndBranch(LOperand* value) {
@@ -683,23 +668,6 @@
 };
 
 
-class LStringCompareAndBranch: public LControlInstruction<2, 0> {
- public:
-  explicit LStringCompareAndBranch(LOperand* left, LOperand* right) {
-    inputs_[0] = left;
-    inputs_[1] = right;
-  }
-
-  DECLARE_CONCRETE_INSTRUCTION(StringCompareAndBranch,
-                               "compare-generic-and-branch")
-  DECLARE_HYDROGEN_ACCESSOR(StringCompareAndBranch)
-
-  virtual void PrintDataTo(StringStream* stream);
-
-  Token::Value op() const { return hydrogen()->token(); }
-};
-
-
 class LHasInstanceTypeAndBranch: public LControlInstruction<1, 0> {
  public:
   explicit LHasInstanceTypeAndBranch(LOperand* value) {