Update V8 to r4851 as required by WebKit r61121

Change-Id: Ib01b7c8e38d5b82b254192fc06365aa5b85780c5

3 files changed, 13 insertions, 3 deletions

diff --git a/src/mips/assembler-mips.cc b/src/mips/assembler-mips.cc
index d9617dc7..a3b316b1 100644
--- a/src/mips/assembler-mips.cc
+++ b/src/mips/assembler-mips.cc
@@ -1046,13 +1046,16 @@ void Assembler::RecordStatementPosition(int pos) {
 }
 
 
-void Assembler::WriteRecordedPositions() {
+bool Assembler::WriteRecordedPositions() {
+  bool written = false;
+
   // Write the statement position if it is different from what was written last
   // time.
   if (current_statement_position_ != written_statement_position_) {
     CheckBuffer();
     RecordRelocInfo(RelocInfo::STATEMENT_POSITION, current_statement_position_);
     written_statement_position_ = current_statement_position_;
+    written = true;
   }
 
   // Write the position if it is different from what was written last time and
@@ -1062,7 +1065,11 @@ void Assembler::WriteRecordedPositions() {
     CheckBuffer();
     RecordRelocInfo(RelocInfo::POSITION, current_position_);
     written_position_ = current_position_;
+    written = true;
   }
+
+  // Return whether something was written.
+  return written;
 }
 
 
diff --git a/src/mips/assembler-mips.h b/src/mips/assembler-mips.h
index cc730f2b..b7c3ebcb 100644
--- a/src/mips/assembler-mips.h
+++ b/src/mips/assembler-mips.h
@@ -355,6 +355,9 @@ class Assembler : public Malloced {
   // to jump to.
   static const int kPatchReturnSequenceAddressOffset = kInstrSize;
 
+  // Distance between start of patched debug break slot and the emitted address
+  // to jump to.
+  static const int kPatchDebugBreakSlotAddressOffset = kInstrSize;
 
   // ---------------------------------------------------------------------------
   // Code generation.
@@ -518,7 +521,7 @@ class Assembler : public Malloced {
 
   void RecordPosition(int pos);
   void RecordStatementPosition(int pos);
-  void WriteRecordedPositions();
+  bool WriteRecordedPositions();
 
   int32_t pc_offset() const { return pc_ - buffer_; }
   int32_t current_position() const { return current_position_; }
diff --git a/src/mips/full-codegen-mips.cc b/src/mips/full-codegen-mips.cc
index afda2cbb..17ee531a 100644
--- a/src/mips/full-codegen-mips.cc
+++ b/src/mips/full-codegen-mips.cc
@@ -45,7 +45,7 @@ void FullCodeGenerator::Generate(CompilationInfo* info, Mode mode) {
 }
 
 
-void FullCodeGenerator::EmitReturnSequence(int position) {
+void FullCodeGenerator::EmitReturnSequence() {
   UNIMPLEMENTED_MIPS();
 }