[Interpreter] Remove InterpreterExitTrampoline and replace with returning to the entry trampoline.

src/deoptimizer.h

Index: src/deoptimizer.h
diff --git a/src/deoptimizer.h b/src/deoptimizer.h
index ae65e0070ffeb46345c0b19a7cd8da54b2e62c65..cff25538f61b423b728370fef70130356f26dc40 100644
--- a/src/deoptimizer.h
+++ b/src/deoptimizer.h
@@ -402,6 +402,22 @@ class Deoptimizer : public Malloced {
  public:
   enum BailoutType { EAGER, LAZY, SOFT, kLastBailoutType = SOFT };
 
+  enum class BailoutState {
+    NO_REGISTERS,
+    TOS_REGISTER,
+  };
+
+  static const char* BailoutStateToString(BailoutState state) {
+    switch (state) {
+      case BailoutState::NO_REGISTERS:
+        return "NO_REGISTERS";
+      case BailoutState::TOS_REGISTER:
+        return "TOS_REGISTER";
+    }
+    UNREACHABLE();
+    return NULL;

[Michael Starzinger, 2016/05/17 14:41:53]

nit: s/NULL/nullptr/

[rmcilroy, 2016/05/17 15:20:05]

Done.

+  }
+
 #define DEOPT_MESSAGES_CONSTANTS(C, T) C,
   enum DeoptReason {
     DEOPT_MESSAGES_LIST(DEOPT_MESSAGES_CONSTANTS) kLastDeoptReason