Using MIME types in addition to plugin name to differentiate between plugins.

chrome/browser/resources/plugin_metadata/plugins_linux.json

Index: chrome/browser/resources/plugin_metadata/plugins_linux.json
diff --git a/chrome/browser/resources/plugin_metadata/plugins_linux.json b/chrome/browser/resources/plugin_metadata/plugins_linux.json
index e3aad1c18c803344dbb6c705b49dc73b1b05e94f..55548982c1cadc54af408f10b7c8f1beb7146d8e 100644
--- a/chrome/browser/resources/plugin_metadata/plugins_linux.json
+++ b/chrome/browser/resources/plugin_metadata/plugins_linux.json
@@ -74,6 +74,9 @@
       "application/futuresplash",
       "application/x-shockwave-flash"
     ],
+    "matching_mime_types": [
+      "application/futuresplash"
+    ],
     "versions": [
       {
         "version": "11.1.102",
@@ -88,6 +91,26 @@
     "displayurl": true,
     "group_name_matcher": "Shockwave Flash"
   },
+  "lightspark": {
+    "mime_types": [
+      "application/x-lightspark",
+      "application/x-shockwave-flash"

[Bernhard Bauer, 2012/10/02 14:40:13]

This now depends on the fact that "lightspark" comes after "adobe-flash"
lexicographically, otherwise we would offer Lightspark when the user comes
across a Flash page. That seems a bit fragile to me. We could probably leave out
the "application/x-shockwave-flash" MIME type.

[ibraaaa, 2012/10/02 16:14:53]

Done.

+    ],
+    "matching_mime_types": [
+      "application/x-lightspark"
+    ],
+    "versions": [
+      {
+        "version": "12.1",

[Bernhard Bauer, 2012/10/02 14:40:13]

Is 12.1 the most recent version?

+        "status": "up_to_date"
+      }
+    ],
+    "lang": "en-US",
+    "name": "Light Spark",

[Bernhard Bauer, 2012/10/02 14:40:13]

Nit: It's "Lightspark", I think.

[ibraaaa, 2012/10/02 16:14:53]

Done.

+    "displayurl": true,
+    "url": "https://launchpad.net/lightspark",
+    "group_name_matcher": "Shockwave Flash"
+  },
   "redhat-icetea-java": {
     "mime_types": [
     ],