Simpler regex names:

runtime/vm/regexp_assembler_bytecode.cc

Index: runtime/vm/regexp_assembler_bytecode.cc
diff --git a/runtime/vm/regexp_assembler_bytecode.cc b/runtime/vm/regexp_assembler_bytecode.cc
index 193616c6f0ddaa7874640e9b216748bb1d099009..9586aea84b2a07e0f0f2a84b1e3c81c6f65794f3 100644
--- a/runtime/vm/regexp_assembler_bytecode.cc
+++ b/runtime/vm/regexp_assembler_bytecode.cc
@@ -452,7 +452,7 @@ void BytecodeRegExpMacroAssembler::Expand() {
 }
 
 
-static intptr_t Prepare(const JSRegExp& regexp,
+static intptr_t Prepare(const RegExp& regexp,
                         const String& subject,
                         Zone* zone) {
   bool is_one_byte = subject.IsOneByteString() ||
@@ -464,7 +464,7 @@ static intptr_t Prepare(const JSRegExp& regexp,
     const bool multiline = regexp.is_multi_line();
     RegExpCompileData* compile_data = new(zone) RegExpCompileData();
     if (!RegExpParser::ParseRegExp(pattern, multiline, compile_data)) {
-      // Parsing failures are handled in the JSRegExp factory constructor.
+      // Parsing failures are handled in the RegExp factory constructor.
       UNREACHABLE();
     }
 
@@ -491,7 +491,7 @@ static intptr_t Prepare(const JSRegExp& regexp,
 }
 
 
-static IrregexpInterpreter::IrregexpResult ExecRaw(const JSRegExp& regexp,
+static IrregexpInterpreter::IrregexpResult ExecRaw(const RegExp& regexp,
                                                    const String& subject,
                                                    intptr_t index,
                                                    int32_t* output,
@@ -537,7 +537,7 @@ static IrregexpInterpreter::IrregexpResult ExecRaw(const JSRegExp& regexp,
 }
 
 
-RawInstance* BytecodeRegExpMacroAssembler::Interpret(const JSRegExp& regexp,
+RawInstance* BytecodeRegExpMacroAssembler::Interpret(const RegExp& regexp,
                                                      const String& subject,
                                                      const Smi& start_index,
                                                      Zone* zone) {