Get rid of HStringLength.

src/ia32/lithium-ia32.h

Index: src/ia32/lithium-ia32.h
diff --git a/src/ia32/lithium-ia32.h b/src/ia32/lithium-ia32.h
index e81cc27e2c10f186dbe390863d619c75f8813f6d..6b0f9d0a74cf82752a2bdebec82394be609f2971 100644
--- a/src/ia32/lithium-ia32.h
+++ b/src/ia32/lithium-ia32.h
@@ -174,7 +174,6 @@ class LCodeGen;
   V(StringCharCodeAt)                           \
   V(StringCharFromCode)                         \
   V(StringCompareAndBranch)                     \
-  V(StringLength)                               \
   V(SubI)                                       \
   V(TaggedToI)                                  \
   V(TaggedToINoSSE2)                            \
@@ -2411,19 +2410,6 @@ class LStringCharFromCode: public LTemplateInstruction<1, 2, 0> {
 };
 
 
-class LStringLength: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LStringLength(LOperand* string) {
-    inputs_[0] = string;
-  }
-
-  LOperand* string() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(StringLength, "string-length")
-  DECLARE_HYDROGEN_ACCESSOR(StringLength)
-};
-
-
 class LCheckFunction: public LTemplateInstruction<0, 1, 0> {
  public:
   explicit LCheckFunction(LOperand* value) {