Introduce dartanalyze into our build.

mojo/public/dart/src/data_pipe.dart

Index: mojo/public/dart/src/data_pipe.dart
diff --git a/mojo/public/dart/src/data_pipe.dart b/mojo/public/dart/src/data_pipe.dart
index 2af863f5eee3453fc00276685e83d1020a11ddeb..bfc47b20720031111401aa442e84b5b1a51878d0 100644
--- a/mojo/public/dart/src/data_pipe.dart
+++ b/mojo/public/dart/src/data_pipe.dart
@@ -41,7 +41,7 @@ class MojoDataPipeProducer {
   MojoDataPipeProducer(
       this.handle, [this.status = MojoResult.OK, this.elementBytes = 1]);
 
-  int write(ByteData data, [int numBytes = -1, int flags = 0]) {
+  MojoResult write(ByteData data, [int numBytes = -1, int flags = 0]) {
     if (handle == null) {
       status = MojoResult.INVALID_ARGUMENT;
       return status;
@@ -104,7 +104,7 @@ class MojoDataPipeConsumer {
   MojoDataPipeConsumer(
       this.handle, [this.status = MojoResult.OK, this.elementBytes = 1]);
 
-  int read(ByteData data, [int numBytes = -1, int flags = 0]) {
+  MojoResult read(ByteData data, [int numBytes = -1, int flags = 0]) {

[zra, 2015/02/24 23:04:39]

This should return the number of bytes read, so returning int is correct, but
the 'return status's below should become return 0.

     if (handle == null) {
       status = MojoResult.INVALID_ARGUMENT;
       return status;
@@ -150,7 +150,7 @@ class MojoDataPipeConsumer {
     return status;
   }
 
-  int query() => read(null, 0, FLAG_QUERY);
+  MojoResult query() => read(null, 0, FLAG_QUERY);

[zra, 2015/02/24 23:04:39]

back to int with fix to read.

 }