Register Chrome as MHTML Viewer on Mac OS X.

BUG=395468

Review URL: https://codereview.chromium.org/409543005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@284636 0039d316-1c4b-4281-b951-d872f2087c98

chrome/app/app-Info.plist

@@ -102,6 +102,25 @@
 			<key>CFBundleTypeRole</key>
 			<string>Viewer</string>
 		</dict>
+		<dict>
+			<key>CFBundleTypeExtensions</key>
+			<array>
+				<string>mhtml</string>
+				<string>mht</string>
+			</array>
+			<key>CFBundleTypeIconFile</key>
+			<string>document.icns</string>
+			<key>CFBundleTypeMIMETypes</key>
+			<array>
+				<string>multipart/related</string>
+				<string>application/x-mimearchive</string>
+				<string>message/rfc822</string>
+			</array>
+			<key>CFBundleTypeName</key>
+			<string>MHTML document</string>
+			<key>CFBundleTypeRole</key>
+			<string>Viewer</string>
+		</dict>
 		<dict>
 			<key>CFBundleTypeExtensions</key>
 			<array>