Register Chrome as MHTML Viewer on Mac OS X.

chrome/app/app-Info.plist

Index: chrome/app/app-Info.plist
diff --git a/chrome/app/app-Info.plist b/chrome/app/app-Info.plist
index bf7b11042cb348345e41220efac4ed61da0138b1..72eb349db43a42ba14515db1f46b7fd3df018179 100644
--- a/chrome/app/app-Info.plist
+++ b/chrome/app/app-Info.plist
@@ -52,6 +52,27 @@
 		<dict>
 			<key>CFBundleTypeExtensions</key>
 			<array>
+				<string>mhtml</string>

[Mark Mentovai, 2014/07/21 18:32:16]

xhtml and one or two others are maybe in a bad spot, but this list is generally
sorted by the primary extension. You should move this entry to be between jpg
and ogg.

[Mark Mentovai, 2014/07/21 18:32:16]

Your CL description says something about a flag. Can you confirm that Chrome is
able to open MHTML files even when that flag is not present?

[benjhayden, 2014/07/21 18:41:49]

The flag only controls whether chrome saves the page as mhtml, not whether
chrome can open mhtml files.
https://code.google.com/p/chromium/codesearch#chromium/src/chrome/browser/dow...
Chrome should be able to open mhtml files regardless of that flag, or any other
afaik.

[benjhayden, 2014/07/21 18:41:49]

Done.

+				<string>mht</string>
+			</array>
+			<key>CFBundleTypeIconFile</key>
+			<string>document.icns</string>
+			<key>CFBundleTypeMIMETypes</key>
+			<array>
+				<string>multipart/related</string>

[Mark Mentovai, 2014/07/21 18:32:16]

http://en.wikipedia.org/wiki/MHTML shows two more MIME types. Should those be
listed too?

[benjhayden, 2014/07/21 18:41:49]

Done.

+			</array>
+			<key>CFBundleTypeName</key>
+			<string>MHTML document</string>
+			<key>CFBundleTypeOSTypes</key>

[Mark Mentovai, 2014/07/21 18:32:16]

Don’t specify this at all. An OSType is a 32-bit integer normally represented as
four ASCII characters. It relates to the classic Mac file type code that’s set
for the file. MHTML is not a valid OS file type code, and it’s likely that there
is no code that’s properly used for this file type, so you should just leave
this key and array out entirely.

[benjhayden, 2014/07/21 18:41:49]

Done.

+			<array>
+				<string>MHTML</string>
+			</array>
+			<key>CFBundleTypeRole</key>
+			<string>Viewer</string>
+		</dict>
+		<dict>
+			<key>CFBundleTypeExtensions</key>
+			<array>
 				<string>xhtml</string>
 			</array>
 			<key>CFBundleTypeIconFile</key>