[common/api] regenerate endpoints clients.

common/api/buildbucket/buildbucket/v1/buildbucket-api.json

 {
  "kind": "discovery#restDescription",
- "etag": "\"ODRTh3xaRR64wpeXJSlF33HMN-0/ZdH9naghIwgRSliyml1cwKZHA3o\"",
+ "etag": "\"RnkXbyw9us4_w3H-FU6An0C4oYs/oaseV8it1U6MhdnhHe3SGj1qZh0\"",
  "discoveryVersion": "v1",
  "id": "buildbucket:v1",
  "name": "buildbucket",
  "version": "v1",
  "title": "Build Bucket Service",
  "description": "API for scheduling builds.",
  "icons": {
   "x16": "https://www.gstatic.com/images/branding/product/1x/googleg_16dp.png",
   "x32": "https://www.gstatic.com/images/branding/product/1x/googleg_32dp.png"
  },
@@ skipping 152 matching lines @@
       ""
      ]
     },
     "result_details_json": {
      "type": "string"
     },
     "retry_of": {
      "type": "string",
      "format": "int64"
     },
+    "started_ts": {
+     "type": "string",
+     "format": "int64"
+    },
     "status": {
      "type": "string",
      "enum": [
       "COMPLETED",
       "SCHEDULED",
       "STARTED"
      ],
      "enumDescriptions": [
       "",
       "",
@@ skipping 241 matching lines @@
    "properties": {
     "error": {
      "$ref": "ApiErrorMessage"
     },
     "longest_pending_time_sec": {
      "type": "number",
      "format": "double"
     }
    }
   },
+  "ApiPauseResponse": {
+   "id": "ApiPauseResponse",
+   "type": "object"
+  },
   "ApiPubSubCallbackMessage": {
    "id": "ApiPubSubCallbackMessage",
    "type": "object",
    "properties": {
     "auth_token": {
      "type": "string"
     },
     "topic": {
      "type": "string"
     },
@@ skipping 11 matching lines @@
      "items": {
       "$ref": "ApiPutRequestMessage"
      }
     }
    }
   },
   "ApiPutBatchResponseMessage": {
    "id": "ApiPutBatchResponseMessage",
    "type": "object",
    "properties": {
+    "error": {
+     "$ref": "ApiErrorMessage"
+    },
     "results": {
      "type": "array",
      "items": {
       "$ref": "ApiPutBatchResponseMessageOneResult"
      }
     }
    }
   },
   "ApiPutBatchResponseMessageOneResult": {
    "id": "ApiPutBatchResponseMessageOneResult",
@@ skipping 104 matching lines @@
     "result_details_json": {
      "type": "string"
     },
     "url": {
      "type": "string"
     }
    }
   }
  },
  "methods": {
+  "backfill_tag_index": {
+   "id": "buildbucket.backfill_tag_index",
+   "path": "backfill_tag_index",
+   "httpMethod": "POST",
+   "description": "Backfills TagIndex entites from builds.",
+   "parameters": {
+    "shards": {
+     "type": "string",
+     "required": true,
+     "format": "int64",
+     "location": "query"
+    },
+    "tag": {
+     "type": "string",
+     "required": true,
+     "location": "query"
+    }
+   },
+   "parameterOrder": [
+    "tag",
+    "shards"
+   ],
+   "scopes": [
+    "https://www.googleapis.com/auth/userinfo.email"
+   ]
+  },
   "cancel": {
    "id": "buildbucket.cancel",
    "path": "builds/{id}/cancel",
    "httpMethod": "POST",
    "description": "Cancels a build.",
    "parameters": {
     "id": {
      "type": "string",
      "required": true,
      "format": "int64",
@@ skipping 236 matching lines @@
     "bucket",
     "builder"
    ],
    "response": {
     "$ref": "ApiLongestPendingTimeResponse"
    },
    "scopes": [
     "https://www.googleapis.com/auth/userinfo.email"
    ]
   },
+  "pause": {
+   "id": "buildbucket.pause",
+   "path": "buckets/{bucket}/pause",
+   "httpMethod": "POST",
+   "description": "Pauses or unpause a bucket.",
+   "parameters": {
+    "bucket": {
+     "type": "string",
+     "required": true,
+     "location": "path"
+    },
+    "is_paused": {
+     "type": "boolean",
+     "required": true,
+     "location": "query"
+    }
+   },
+   "parameterOrder": [
+    "bucket",
+    "is_paused"
+   ],
+   "response": {
+    "$ref": "ApiPauseResponse"
+   },
+   "scopes": [
+    "https://www.googleapis.com/auth/userinfo.email"
+   ]
+  },
   "peek": {
    "id": "buildbucket.peek",
    "path": "peek",
    "httpMethod": "GET",
    "description": "Returns available builds.",
    "parameters": {
     "bucket": {
      "type": "string",
      "repeated": true,
      "location": "query"
@@ skipping 244 matching lines @@
    },
    "response": {
     "$ref": "ApiBuildResponseMessage"
    },
    "scopes": [
     "https://www.googleapis.com/auth/userinfo.email"
    ]
   }
  }
 }