Replace ASSERT/ASSERT_NOT_REACHED with DCHECK/NOTREACHED in modules/webaudio

This CL changes ASSERT/ASSERT_NOT_REACHED to DCHECK/NOTREACHED
mechanically, replacing the assertion with a single argument only.

I used the following script:

```
cd ${CHROME_SRC}/third_party/WebKit/Source/modules/webaudio
find . -type f -exec sed -i -E 's:ASSERT_NOT_REACHED:NOTREACHED:g' {} \;
find . -type f -exec sed -i -E 's:(\s)ASSERT\(([^ ]+)\)\;:\1DCHECK\(\2\)\;:g' {} \;
```

With this CL the following script returns 0 result:

```
cd ${CHROME_SRC}/third_party/WebKit/Source/modules/webaudio
grep -rnw . -e 'ASSERT('
```

BUG=707643
Review-Url: https://codereview.chromium.org/2809023002
Cr-Commit-Position: refs/heads/master@{#463485}
Committed: https://chromium.googlesource.com/chromium/src/+/aab941796e90b42557028feefef8365d493b8651

[hongchan, 2017-04-10 22:34:32]

hongchan@chromium.org changed reviewers:
+ rtoy@chromium.org

[hongchan, 2017-04-10 22:34:33]

PTAL.

[hongchan, 2017-04-10 22:37:06]

Description was changed from

==========
This CL changes ASSERT/ASSERT_NOT_REACHED to DCHECK/NOTREACHED
mechanically, replacing the assertion with a single argument only.

I used the following script:

```
cd ${CHROME_SRC}/third_party/WebKit/Source/modules/webaudio
find . -type f -exec sed -i -E 's:ASSERT_NOT_REACHED:NOTREACHED:g' {} \;
find . -type f -exec sed -i -E 's:(\s)ASSERT\(([^ ]+)\)\;:\1DCHECK\(\2\)\;:g' {}
\;
```

With this CL the following script returns 0 result:

```
cd ${CHROME_SRC}/third_party/WebKit/Source/modules/webaudio
grep -rnw . -e 'ASSERT('
```

BUG=707643
==========

to

==========
This CL changes ASSERT/ASSERT_NOT_REACHED to DCHECK/NOTREACHED
mechanically, replacing the assertion with a single argument only.

I used the following script:

```
cd ${CHROME_SRC}/third_party/WebKit/Source/modules/webaudio
find . -type f -exec sed -i -E 's:ASSERT_NOT_REACHED:NOTREACHED:g' {} \;
find . -type f -exec sed -i -E 's:(\s)ASSERT\(([^ ]+)\)\;:\1DCHECK\(\2\)\;:g' {}
\;
```

With this CL the following script returns 0 result:

```
cd ${CHROME_SRC}/third_party/WebKit/Source/modules/webaudio
grep -rnw . -e 'ASSERT('
```

BUG=707643
==========

[Raymond Toy, 2017-04-10 22:39:20]

lgtm

[hongchan, 2017-04-10 22:40:35]

The CQ bit was checked by hongchan@chromium.org

[commit-bot: I haz the power, 2017-04-10 22:41:35]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-04-11 01:19:08]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1491864035036030, "parent_rev":
"24a7ab49adbbaeefd815066ac9e530e4713560b1", "commit_rev":
"aab941796e90b42557028feefef8365d493b8651"}

[commit-bot: I haz the power, 2017-04-11 01:20:02]

Description was changed from

==========
This CL changes ASSERT/ASSERT_NOT_REACHED to DCHECK/NOTREACHED
mechanically, replacing the assertion with a single argument only.

I used the following script:

```
cd ${CHROME_SRC}/third_party/WebKit/Source/modules/webaudio
find . -type f -exec sed -i -E 's:ASSERT_NOT_REACHED:NOTREACHED:g' {} \;
find . -type f -exec sed -i -E 's:(\s)ASSERT\(([^ ]+)\)\;:\1DCHECK\(\2\)\;:g' {}
\;
```

With this CL the following script returns 0 result:

```
cd ${CHROME_SRC}/third_party/WebKit/Source/modules/webaudio
grep -rnw . -e 'ASSERT('
```

BUG=707643
==========

to

==========
This CL changes ASSERT/ASSERT_NOT_REACHED to DCHECK/NOTREACHED
mechanically, replacing the assertion with a single argument only.

I used the following script:

```
cd ${CHROME_SRC}/third_party/WebKit/Source/modules/webaudio
find . -type f -exec sed -i -E 's:ASSERT_NOT_REACHED:NOTREACHED:g' {} \;
find . -type f -exec sed -i -E 's:(\s)ASSERT\(([^ ]+)\)\;:\1DCHECK\(\2\)\;:g' {}
\;
```

With this CL the following script returns 0 result:

```
cd ${CHROME_SRC}/third_party/WebKit/Source/modules/webaudio
grep -rnw . -e 'ASSERT('
```

BUG=707643

Review-Url: https://codereview.chromium.org/2809023002
Cr-Commit-Position: refs/heads/master@{#463485}
Committed:
https://chromium.googlesource.com/chromium/src/+/aab941796e90b42557028feefef8...
==========

[commit-bot: I haz the power, 2017-04-11 01:20:03]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/aab941796e90b42557028feefef8...