[NaCl SDK] Update pepper_55 bundle

native_client_sdk/src/build_tools/json/naclsdk_manifest2.json

 {
   "bundles": [
     {
       "archives": [
         {
           "checksum": {
             "sha1": "c90944aa6dc45085f1a222396ffa2b6a86afdf3d"
           },
           "host_os": "all",
           "size": 31159,
@@ skipping 17 matching lines @@
       "description": "Visual Studio Add-In for building and debugging NaCl applications",
       "name": "vs_addin",
       "recommended": "no",
       "repath": "vs_addin",
       "revision": 1578,
       "stability": "dev",
       "version": 0
     },
     {
       "archives": [],
-      "description": "Chrome 44 bundle, revision xxxxx",
-      "name": "pepper_44",
-      "recommended": "no",
-      "repath": "pepper_44",
-      "revision": 0,
-      "stability": "post_stable",
-      "version": 44
-    },
-    {
-      "archives": [],
-      "description": "Chrome 45 bundle, revision xxxxx",
-      "name": "pepper_45",
-      "recommended": "no",
-      "repath": "pepper_45",
-      "revision": 0,
-      "stability": "post_stable",
-      "version": 45
-    },
-    {
-      "archives": [],
       "description": "Chrome 46 bundle, revision xxxxx",
       "name": "pepper_46",
       "recommended": "no",
       "repath": "pepper_46",
       "revision": 0,
       "stability": "post_stable",
       "version": 46
     },
     {
       "archives": [],
@@ skipping 19 matching lines @@
       "archives": [],
       "description": "Chrome 50 bundle, revision xxxxx",
       "name": "pepper_50",
       "recommended": "no",
       "repath": "pepper_50",
       "revision": 0,
       "stability": "post_stable",
       "version": 50
     },
     {
-      "archives": [
-        {
-          "checksum": {
-            "sha1": "8fa21433d946fb30666d29d9898ab91b6f0fb708"
-          },
-          "host_os": "linux",
-          "size": 332591654,
-          "url": "https://storage.googleapis.com/nativeclient-mirror/nacl/nacl_sdk/55.0.2879.2/naclsdk_linux.tar.bz2"
-        },
-        {
-          "checksum": {
-            "sha1": "6db864b3372ad98a46d6c6166f59c5cfa13f7a57"
-          },
-          "host_os": "mac",
-          "size": 322946452,
-          "url": "https://storage.googleapis.com/nativeclient-mirror/nacl/nacl_sdk/55.0.2879.2/naclsdk_mac.tar.bz2"
-        },
-        {
-          "checksum": {
-            "sha1": "0f562a6288c18459f4132c0a7dada147c588e8e9"
-          },
-          "host_os": "win",
-          "size": 318999883,
-          "url": "https://storage.googleapis.com/nativeclient-mirror/nacl/nacl_sdk/55.0.2879.2/naclsdk_win.tar.bz2"
-        }
-      ],
-      "description": "Chrome 55 bundle. Chrome revision: 2. NaCl revision: fe5bd51f9b79d27b2a3884181d4004cfccf70759",
+      "archives": [],
+      "description": "Chrome 55 bundle, revision xxxxx",
       "name": "pepper_55",
       "recommended": "no",
       "repath": "pepper_55",
-      "revision": 2,
-      "stability": "dev",
+      "revision": 0,
+      "stability": "post_stable",
       "version": 55
     },
     {
       "archives": [],
       "description": "Chrome Canary",
       "name": "pepper_canary",
       "recommended": "no",
       "repath": "",
       "revision": 0,
       "stability": "canary",
       "version": 0
     }
   ],
   "manifest_version": 2
 }