mediaview: Recognize more MIME types.

mediaview: Recognize more MIME types.

Android uses "audio/x-wav" MIME type to describe .wav files, while
Chromium knows "audio/wav" only. This patch adds hard-coded mapping
between MIME types and file name extensions taken from Android.

BUG=chromium:685330
TEST=unit_tests
TEST=.wav files recognized in media views

Review-Url: https://codereview.chromium.org/2656973003
Cr-Commit-Position: refs/heads/master@{#446633}
(cherry picked from commit 588a513a3772d7cc466568f9007780aee8251003)

Review-Url: https://codereview.chromium.org/2661003003 .
Cr-Commit-Position: refs/branch-heads/2987@{#215}
Cr-Branched-From: ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}
Committed: https://chromium.googlesource.com/chromium/src/+/8844a6395ed1a3fdfc09d12fe5b24437d4aa31ca

[Shuhei Takahashi, 2017-01-31 03:33:44]

Description was changed from

==========
mediaview: Recognize more MIME types.

Android uses "audio/x-wav" MIME type to describe .wav files, while
Chromium knows "audio/wav" only. This patch adds hard-coded mapping
between MIME types and file name extensions taken from Android.

BUG=chromium:685330
TEST=unit_tests
TEST=.wav files recognized in media views

Review-Url: https://codereview.chromium.org/2656973003
Cr-Commit-Position: refs/heads/master@{#446633}
(cherry picked from commit 588a513a3772d7cc466568f9007780aee8251003)
==========

to

==========
mediaview: Recognize more MIME types.

Android uses "audio/x-wav" MIME type to describe .wav files, while
Chromium knows "audio/wav" only. This patch adds hard-coded mapping
between MIME types and file name extensions taken from Android.

BUG=chromium:685330
TEST=unit_tests
TEST=.wav files recognized in media views

Review-Url: https://codereview.chromium.org/2656973003
Cr-Commit-Position: refs/heads/master@{#446633}
(cherry picked from commit 588a513a3772d7cc466568f9007780aee8251003)

Review-Url: https://codereview.chromium.org/2661003003 .
Cr-Commit-Position: refs/branch-heads/2987@{#215}
Cr-Branched-From:
ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}
Committed:
https://chromium.googlesource.com/chromium/src/+/8844a6395ed1a3fdfc09d12fe5b2...
==========

[Shuhei Takahashi, 2017-01-31 03:33:54]

Committed patchset #1 (id:1) manually as
8844a6395ed1a3fdfc09d12fe5b24437d4aa31ca.