Refactor the io resource classes

Refactor the io resource classes

Move stopwatch so that we will only ever need one instance

Add utility functions for doing reads and writes

The only functional change here is that I say that an except is a read
of one byte, which also updates the readcount. I think this is just as
correct as what we did before.


BUG=
R=sgjesse@google.com

Committed: https://github.com/dart-lang/sdk/commit/c6918fb126acd77ea38e6dd049bf459e53a4e808

[ricow1, 2015-09-08 12:51:33]

ricow@google.com changed reviewers:
+ sgjesse@google.com

[Søren Gjesse, 2015-09-09 07:12:21]

https://codereview.chromium.org/1320023008/diff/20001/sdk/lib/io/io_resource_...
File sdk/lib/io/io_resource_info.dart (right):

https://codereview.chromium.org/1320023008/diff/20001/sdk/lib/io/io_resource_...
sdk/lib/io/io_resource_info.dart:57: void didRead() {
Maybe just implement like this:

void didRead() => addRead(0);

[Søren Gjesse, 2015-09-09 07:12:26]

lgtm

[ricow1, 2015-09-09 07:14:24]

thanks

https://codereview.chromium.org/1320023008/diff/20001/sdk/lib/io/io_resource_...
File sdk/lib/io/io_resource_info.dart (right):

https://codereview.chromium.org/1320023008/diff/20001/sdk/lib/io/io_resource_...
sdk/lib/io/io_resource_info.dart:57: void didRead() {
On 2015/09/09 07:12:21, Søren Gjesse wrote:
> Maybe just implement like this:
> 
> void didRead() => addRead(0);

Done.

[ricow1, 2015-09-09 07:18:16]

Committed patchset #3 (id:40001) manually as
c6918fb126acd77ea38e6dd049bf459e53a4e808 (presubmit successful).