Revert "Make the JIT zygote memory shared."

This reverts commit 05f87217ddc9b4b9186710c0135b918f456c5aef.

Bug: 119800099
Bug: 136110523

Reason for revert: testWebview flaking

Change-Id: I96afa6bc9c56c4aaf5ed72ae370f6f69c096c559
diff --git a/compiler/optimizing/nodes.h b/compiler/optimizing/nodes.h
index 759a8e6..8ac33a4 100644
--- a/compiler/optimizing/nodes.h
+++ b/compiler/optimizing/nodes.h
@@ -320,7 +320,6 @@
          bool dead_reference_safe = false,
          bool debuggable = false,
          bool osr = false,
-         bool is_shared_jit_code = false,
          int start_instruction_id = 0)
       : allocator_(allocator),
         arena_stack_(arena_stack),
@@ -356,8 +355,7 @@
         art_method_(nullptr),
         inexact_object_rti_(ReferenceTypeInfo::CreateInvalid()),
         osr_(osr),
-        cha_single_implementation_list_(allocator->Adapter(kArenaAllocCHA)),
-        is_shared_jit_code_(is_shared_jit_code) {
+        cha_single_implementation_list_(allocator->Adapter(kArenaAllocCHA)) {
     blocks_.reserve(kDefaultNumberOfBlocks);
   }
 
@@ -587,10 +585,6 @@
 
   bool IsCompilingOsr() const { return osr_; }
 
-  bool IsCompilingForSharedJitCode() const {
-    return is_shared_jit_code_;
-  }
-
   ArenaSet<ArtMethod*>& GetCHASingleImplementationList() {
     return cha_single_implementation_list_;
   }
@@ -780,10 +774,6 @@
   // List of methods that are assumed to have single implementation.
   ArenaSet<ArtMethod*> cha_single_implementation_list_;
 
-  // Whether we are JIT compiling in the shared region area, putting
-  // restrictions on, for example, how literals are being generated.
-  bool is_shared_jit_code_;
-
   friend class SsaBuilder;           // For caching constants.
   friend class SsaLivenessAnalysis;  // For the linear order.
   friend class HInliner;             // For the reverse post order.