Update the streams interfaces

tests/standalone/src/FileTest.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 //
 // Dart test program for testing file I/O.
 
 
 class FileTest {
   // Test for file read functionality.
   static int testReadStream() {
     // Read a file and check part of it's contents.
     String filename = getFilename("bin/file_test.cc");
     File file = new File(filename, false);
     InputStream input = file.inputStream;
     List<int> buffer = new List<int>(42);
-    bool readDone = input.read(buffer, 0, 12, null);
-    Expect.equals(true, readDone);
-    readDone = input.read(buffer, 12, 30, null);
-    Expect.equals(true, readDone);
+    int bytesRead = input.readInto(buffer, 0, 12);
+    Expect.equals(12, bytesRead);
+    bytesRead = input.readInto(buffer, 12, 30);
+    Expect.equals(30, bytesRead);
     Expect.equals(47, buffer[0]);  // represents '/' in the file.
     Expect.equals(47, buffer[1]);  // represents '/' in the file.
     Expect.equals(32, buffer[2]);  // represents ' ' in the file.
     Expect.equals(67, buffer[3]);  // represents 'C' in the file.
     Expect.equals(111, buffer[4]);  // represents 'o' in the file.
     Expect.equals(112, buffer[5]);  // represents 'p' in the file.
     Expect.equals(121, buffer[6]);  // represents 'y' in the file.
     Expect.equals(114, buffer[7]);  // represents 'r' in the file.
     Expect.equals(105, buffer[8]);  // represents 'i' in the file.
     Expect.equals(103, buffer[9]);  // represents 'g' in the file.
     Expect.equals(104, buffer[10]);  // represents 'h' in the file.
     Expect.equals(116, buffer[11]);  // represents 't' in the file.
     return 1;
   }
   // Test for file read and write functionality.
   static int testReadWriteStream() {
     // Read a file.
     String inFilename = getFilename("tests/vm/data/fixed_length_file");
     File file = new File(inFilename, false);
     InputStream input = file.inputStream;
     List<int> buffer1 = new List<int>(42);
-    bool readDone = input.read(buffer1, 0, 42, null);
-    Expect.equals(true, readDone);
+    int bytesRead = input.readInto(buffer1, 0, 42);
+    Expect.equals(42, bytesRead);
     file.close();
     // Write the contents of the file just read into another file.
     String outFilename = getFilename("tests/vm/data/fixed_length_file_out");
     file = new File(outFilename, true);
     OutputStream output = file.outputStream;
     bool writeDone = output.write(buffer1, 0, 42, null);
     Expect.equals(true, writeDone);
     file.close();
     // Now read the contents of the file just written.
     List<int> buffer2 = new List<int>(42);
     file = new File(outFilename, false);
     input = file.inputStream;
-    readDone = input.read(buffer2, 0, 42, null);
-    Expect.equals(true, readDone);
+    bytesRead = input.readInto(buffer2, 0, 42);
+    Expect.equals(42, bytesRead);
     file.close();
     // Now compare the two buffers to check if they are identical.
     for (int i = 0; i < buffer1.length; i++) {
       Expect.equals(buffer1[i],  buffer2[i]);
     }
     return 1;
   }
   static int testRead() {
     // Read a file and check part of it's contents.
     String filename = getFilename("bin/file_test.cc");
@@ skipping 168 matching lines @@
   static int testCloseExceptionStream() {
     bool exceptionCaught = false;
     bool wrongExceptionCaught = false;
     String filename = getFilename("tests/vm/data/fixed_length_file_out");
     File file = new File(filename, true);
     assert(file != null);
     file.close();
     InputStream input = file.inputStream;
     try {
       List<int> buffer = new List<int>(42);
-      bool readDone = input.read(buffer, 0, 12, null);
+      input.readInto(buffer, 0, 12);
     } catch (FileIOException ex) {
       exceptionCaught = true;
     } catch (Exception ex) {
       wrongExceptionCaught = true;
     }
     Expect.equals(true, exceptionCaught);
     Expect.equals(true, !wrongExceptionCaught);
     exceptionCaught = false;
     OutputStream output = file.outputStream;
     try {
@@ skipping 129 matching lines @@
     Expect.equals(1, testPosition());
     Expect.equals(1, testCloseException());
     Expect.equals(1, testCloseExceptionStream());
     Expect.equals(1, testBufferOutOfBoundsException());
   }
 }
 
 main() {
   FileTest.testMain();
 }