Generate a custom OSR entrypoint for OSR compiles on all platforms, and transition to optimized cod…

src/mips/lithium-codegen-mips.h

Index: src/mips/lithium-codegen-mips.h
diff --git a/src/mips/lithium-codegen-mips.h b/src/mips/lithium-codegen-mips.h
index a485b67db9496aed6e3c5dbc31e73dc5153d52cf..e6e8560d7a31e63f10ac8fb660948fa490f6614a 100644
--- a/src/mips/lithium-codegen-mips.h
+++ b/src/mips/lithium-codegen-mips.h
@@ -226,6 +226,9 @@ class LCodeGen BASE_EMBEDDED {
   bool GenerateDeoptJumpTable();
   bool GenerateSafepointTable();
 
+  // Generates the custom OSR entrypoint and sets the osr_pc_offset.
+  void GenerateOsrPrologue();
+
   enum SafepointMode {
     RECORD_SIMPLE_SAFEPOINT,
     RECORD_SAFEPOINT_WITH_REGISTERS_AND_NO_ARGUMENTS