Remove deprecated StringBuffer.add, addAll and addCharCode.

sdk/lib/_internal/compiler/implementation/util/util.dart

Index: sdk/lib/_internal/compiler/implementation/util/util.dart
diff --git a/sdk/lib/_internal/compiler/implementation/util/util.dart b/sdk/lib/_internal/compiler/implementation/util/util.dart
index 0c94d40cbcae406907c307bb1600f6cc1a177169..9d4056a6954ca0eb9113f782ae271802b3ec0faf 100644
--- a/sdk/lib/_internal/compiler/implementation/util/util.dart
+++ b/sdk/lib/_internal/compiler/implementation/util/util.dart
@@ -37,36 +37,36 @@ class SpannableAssertionFailure {
 
 /// Writes the characters of [string] on [buffer].  The characters
 /// are escaped as suitable for JavaScript and JSON.  [buffer] is
-/// anything which supports [:add:] and [:addCharCode:], for example,
+/// anything which supports [:write:] and [:writeCharCode:], for example,
 /// [StringBuffer].  Note that JS supports \xnn and \unnnn whereas JSON only
 /// supports the \unnnn notation.  Therefore we use the \unnnn notation.
 void writeJsonEscapedCharsOn(String string, buffer) {
   void addCodeUnitEscaped(var buffer, int code) {
     assert(code < 0x10000);
-    buffer.add(r'\u');
+    buffer.write(r'\u');
     if (code < 0x1000) {
-      buffer.add('0');
+      buffer.write('0');
       if (code < 0x100) {
-        buffer.add('0');
+        buffer.write('0');
         if (code < 0x10) {
-          buffer.add('0');
+          buffer.write('0');
         }
       }
     }
-    buffer.add(code.toRadixString(16));
+    buffer.write(code.toRadixString(16));
   }
 
   void writeEscapedOn(String string, var buffer) {
     for (int i = 0; i < string.length; i++) {
       int code = string.codeUnitAt(i);
       if (code == $DQ) {
-        buffer.add(r'\"');
+        buffer.write(r'\"');
       } else if (code == $TAB) {
-        buffer.add(r'\t');
+        buffer.write(r'\t');
       } else if (code == $LF) {
-        buffer.add(r'\n');
+        buffer.write(r'\n');
       } else if (code == $CR) {
-        buffer.add(r'\r');
+        buffer.write(r'\r');
       } else if (code == $DEL) {
         addCodeUnitEscaped(buffer, $DEL);
       } else if (code == $LS) {
@@ -76,7 +76,7 @@ void writeJsonEscapedCharsOn(String string, buffer) {
       } else if (code == $PS) {
         addCodeUnitEscaped(buffer, $PS);  // 0x2029.
       } else if (code == $BACKSLASH) {
-        buffer.add(r'\\');
+        buffer.write(r'\\');
       } else {
         if (code < 0x20) {
           addCodeUnitEscaped(buffer, code);
@@ -85,7 +85,7 @@ void writeJsonEscapedCharsOn(String string, buffer) {
           // everything above 0x7f because that means we don't have to worry
           // about whether the web server serves it up as Latin1 or UTF-8.
         } else if (code < 0x7f) {
-          buffer.addCharCode(code);
+          buffer.writeCharCode(code);
         } else {
           // This will output surrogate pairs in the form \udxxx\udyyy, rather
           // than the more logical \u{zzzzzz}.  This should work in JavaScript
@@ -105,5 +105,5 @@ void writeJsonEscapedCharsOn(String string, buffer) {
       return;
     }
   }
-  buffer.add(string);
+  buffer.write(string);
 }