chore: generate GAPIC metadata JSON file (#469)

This PR was generated using Autosynth. 🌈

Synth log will be available here:
https://source.cloud.google.com/results/invocations/1375dc8f-6e92-47e5-b704-19ee285b9aaf/targets

- [ ] To automatically regenerate this PR, check this box.

PiperOrigin-RevId: 345596855
Source-Link: googleapis/googleapis@d189e87

Author: yoshi-automation

packages/google-cloud-texttospeech/src/v1/gapic_metadata.json

@@ -0,0 +1,43 @@
+{
+  "schema": "1.0",
+  "comment": "This file maps proto services/RPCs to the corresponding library clients/methods",
+  "language": "typescript",
+  "protoPackage": "google.cloud.texttospeech.v1",
+  "libraryPackage": "@google-cloud/text-to-speech",
+  "services": {
+    "TextToSpeech": {
+      "clients": {
+        "grpc": {
+          "libraryClient": "TextToSpeechClient",
+          "rpcs": {
+            "ListVoices": {
+              "methods": [
+                "listVoices"
+              ]
+            },
+            "SynthesizeSpeech": {
+              "methods": [
+                "synthesizeSpeech"
+              ]
+            }
+          }
+        },
+        "grpc-fallback": {
+          "libraryClient": "TextToSpeechClient",
+          "rpcs": {
+            "ListVoices": {
+              "methods": [
+                "listVoices"
+              ]
+            },
+            "SynthesizeSpeech": {
+              "methods": [
+                "synthesizeSpeech"
+              ]
+            }
+          }
+        }
+      }
+    }
+  }
+}

packages/google-cloud-texttospeech/src/v1beta1/gapic_metadata.json

@@ -0,0 +1,43 @@
+{
+  "schema": "1.0",
+  "comment": "This file maps proto services/RPCs to the corresponding library clients/methods",
+  "language": "typescript",
+  "protoPackage": "google.cloud.texttospeech.v1beta1",
+  "libraryPackage": "@google-cloud/text-to-speech",
+  "services": {
+    "TextToSpeech": {
+      "clients": {
+        "grpc": {
+          "libraryClient": "TextToSpeechClient",
+          "rpcs": {
+            "ListVoices": {
+              "methods": [
+                "listVoices"
+              ]
+            },
+            "SynthesizeSpeech": {
+              "methods": [
+                "synthesizeSpeech"
+              ]
+            }
+          }
+        },
+        "grpc-fallback": {
+          "libraryClient": "TextToSpeechClient",
+          "rpcs": {
+            "ListVoices": {
+              "methods": [
+                "listVoices"
+              ]
+            },
+            "SynthesizeSpeech": {
+              "methods": [
+                "synthesizeSpeech"
+              ]
+            }
+          }
+        }
+      }
+    }
+  }
+}

packages/google-cloud-texttospeech/synth.metadata

@@ -4,15 +4,15 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/nodejs-text-to-speech.git",
-        "sha": "a0925b35d4e39587388cfe05685891d523f1bc49"
+        "sha": "25d9090d24ba9b421ae1ac0c2f2e9c1d0ea3f438"
       }
     },
     {
       "git": {
         "name": "googleapis",
         "remote": "https://github.com/googleapis/googleapis.git",
-        "sha": "2f019bf70bfe06f1e2af1b04011b0a2405190e43",
-        "internalRef": "343202295"
+        "sha": "d189e871205fea665a9648f7c4676f027495ccaf",
+        "internalRef": "345596855"
       }
     },
     {