Plumb through API key for ReadAloud service.

API key will be used by integration with remote ReadAloud service to provide enhanced text-to-speech synthesis to Select-to-speak.

go/wavenet-chromeos-dd

Bug: 1215291
Change-Id: Ib6263369a15329d9f129273698e009fc0d6c1b69
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2930784
Reviewed-by: David Roger <droger@chromium.org>
Commit-Queue: Joel Riley <joelriley@google.com>
Cr-Commit-Position: refs/heads/master@{#889428}

google_apis/google_api_keys.cc

@@ -95,6 +95,11 @@
 #define GOOGLE_API_KEY_SODA DUMMY_API_TOKEN
 #endif
 
+// API key for the ReadAloud API.
+#if !defined(GOOGLE_API_KEY_READ_ALOUD)
+#define GOOGLE_API_KEY_READ_ALOUD DUMMY_API_TOKEN
+#endif
+
 // These are used as shortcuts for developers and users providing
 // OAuth credentials via preprocessor defines or environment
 // variables.  If set, they will be used to replace any of the client
@@ -147,6 +152,10 @@ class APIKeyCache {
         GOOGLE_API_KEY_SODA, STRINGIZE_NO_EXPANSION(GOOGLE_API_KEY_SODA),
         nullptr, std::string(), environment.get(), command_line, gaia_config);
 
+    api_key_read_aloud_ = CalculateKeyValue(
+        GOOGLE_API_KEY_SODA, STRINGIZE_NO_EXPANSION(GOOGLE_API_KEY_READ_ALOUD),
+        nullptr, std::string(), environment.get(), command_line, gaia_config);
+
     metrics_key_ = CalculateKeyValue(
         GOOGLE_METRICS_SIGNING_KEY,
         STRINGIZE_NO_EXPANSION(GOOGLE_METRICS_SIGNING_KEY), nullptr,
@@ -213,6 +222,7 @@ class APIKeyCache {
   std::string api_key_remoting() const { return api_key_remoting_; }
   std::string api_key_sharing() const { return api_key_sharing_; }
   std::string api_key_soda() const { return api_key_soda_; }
+  std::string api_key_read_aloud() const { return api_key_read_aloud_; }
 
   std::string metrics_key() const { return metrics_key_; }
 
@@ -326,6 +336,7 @@ class APIKeyCache {
   std::string api_key_remoting_;
   std::string api_key_sharing_;
   std::string api_key_soda_;
+  std::string api_key_read_aloud_;
   std::string metrics_key_;
   std::string client_ids_[CLIENT_NUM_ITEMS];
   std::string client_secrets_[CLIENT_NUM_ITEMS];
@@ -358,6 +369,10 @@ std::string GetSodaAPIKey() {
   return g_api_key_cache.Get().api_key_soda();
 }
 
+std::string GetReadAloudAPIKey() {
+  return g_api_key_cache.Get().api_key_read_aloud();
+}
+
 #if defined(OS_IOS) || defined(OS_FUCHSIA)
 void SetAPIKey(const std::string& api_key) {
   g_api_key_cache.Get().set_api_key(api_key);

google_apis/google_api_keys.h

@@ -85,6 +85,9 @@ std::string GetSharingAPIKey();
 // Retrieves the Speech On-Device API (SODA) API Key.
 std::string GetSodaAPIKey();
 
+// Retrieves the ReadAloud API Key.
+std::string GetReadAloudAPIKey();
+
 #if defined(OS_IOS) || defined(OS_FUCHSIA)
 // Sets the API key. This should be called as early as possible before this
 // API key is even accessed. It must be called before GetAPIKey.