Make //google_apis a component

Multiple components depend on build target //google_apis which is
against recommended practices in [1] and specifically runs into issues
when new singleton-like state, include base::Feature instances, are
added to //google_apis.

Following recommended practices, this patch makes //google_apis a
component itself, as all targets it depends on are already components.

[1] https://chromium.googlesource.com/chromium/src/+/main/docs/component_build.md#dependencies-between-targets

Change-Id: I9c14050314b208791d7d5773ab76a7913c422bd9
Fixed: 1417961
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4272614
Reviewed-by: Jamie Walch <jamiewalch@chromium.org>
Reviewed-by: Alex Ilin <alexilin@chromium.org>
Commit-Queue: Mikel Astiz <mastiz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1107876}

google_apis/google_api_keys.h

@@ -9,6 +9,7 @@
 // google_api_keys_unittest.cc.
 #include <string>
 
+#include "base/component_export.h"
 #include "build/build_config.h"
 #include "build/chromeos_buildflags.h"
 #include "google_apis/buildflags.h"
@@ -61,47 +62,47 @@
 
 namespace google_apis {
 
-extern const char kAPIKeysDevelopersHowToURL[];
+COMPONENT_EXPORT(GOOGLE_APIS) extern const char kAPIKeysDevelopersHowToURL[];
 
 // Returns true if no dummy API key is set.
-bool HasAPIKeyConfigured();
+COMPONENT_EXPORT(GOOGLE_APIS) bool HasAPIKeyConfigured();
 
 // Retrieves the API key, a.k.a. developer key, or a dummy string
 // if not set.
 //
 // Note that the key should be escaped for the context you use it in,
 // e.g. URL-escaped if you use it in a URL.
-std::string GetAPIKey();
+COMPONENT_EXPORT(GOOGLE_APIS) std::string GetAPIKey();
 
 // Non-stable channels may have a different Google API key.
-std::string GetNonStableAPIKey();
+COMPONENT_EXPORT(GOOGLE_APIS) std::string GetNonStableAPIKey();
 
 // Retrieves the Chrome Remote Desktop API key.
-std::string GetRemotingAPIKey();
+COMPONENT_EXPORT(GOOGLE_APIS) std::string GetRemotingAPIKey();
 
 // Retrieves the Speech On-Device API (SODA) API Key.
-std::string GetSodaAPIKey();
+COMPONENT_EXPORT(GOOGLE_APIS) std::string GetSodaAPIKey();
 
 #if BUILDFLAG(IS_CHROMEOS_ASH)
 // Retrieves the Sharing API Key.
-std::string GetSharingAPIKey();
+COMPONENT_EXPORT(GOOGLE_APIS) std::string GetSharingAPIKey();
 
 // Retrieves the ReadAloud API Key.
-std::string GetReadAloudAPIKey();
+COMPONENT_EXPORT(GOOGLE_APIS) std::string GetReadAloudAPIKey();
 
 // Retrieves the Fresnel API Key.
-std::string GetFresnelAPIKey();
+COMPONENT_EXPORT(GOOGLE_APIS) std::string GetFresnelAPIKey();
 #endif
 
 #if BUILDFLAG(SUPPORT_EXTERNAL_GOOGLE_API_KEY)
 // 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.
 // TODO(https://crbug.com/1166007): Enforce this is called before GetAPIKey.
-void SetAPIKey(const std::string& api_key);
+COMPONENT_EXPORT(GOOGLE_APIS) void SetAPIKey(const std::string& api_key);
 #endif
 
 // Retrieves the key used to sign metrics (UMA/UKM) uploads.
-std::string GetMetricsKey();
+COMPONENT_EXPORT(GOOGLE_APIS) std::string GetMetricsKey();
 
 // Represents the different sets of client IDs and secrets in use.
 enum OAuth2Client {
@@ -113,13 +114,14 @@ enum OAuth2Client {
 };
 
 // Returns true if no dummy OAuth2 client ID and secret are set.
-bool HasOAuthClientConfigured();
+COMPONENT_EXPORT(GOOGLE_APIS) bool HasOAuthClientConfigured();
 
 // Retrieves the OAuth2 client ID for the specified client, or the
 // empty string if not set.
 //
 // Note that the ID should be escaped for the context you use it in,
 // e.g. URL-escaped if you use it in a URL.
+COMPONENT_EXPORT(GOOGLE_APIS)
 std::string GetOAuth2ClientID(OAuth2Client client);
 
 // Retrieves the OAuth2 client secret for the specified client, or the
@@ -127,22 +129,25 @@ std::string GetOAuth2ClientID(OAuth2Client client);
 //
 // Note that the secret should be escaped for the context you use it
 // in, e.g. URL-escaped if you use it in a URL.
+COMPONENT_EXPORT(GOOGLE_APIS)
 std::string GetOAuth2ClientSecret(OAuth2Client client);
 
 #if BUILDFLAG(IS_IOS)
 // Sets the client id for the specified client. Should be called as early as
 // possible before these ids are accessed.
+COMPONENT_EXPORT(GOOGLE_APIS)
 void SetOAuth2ClientID(OAuth2Client client, const std::string& client_id);
 
 // Sets the client secret for the specified client. Should be called as early as
 // possible before these secrets are accessed.
+COMPONENT_EXPORT(GOOGLE_APIS)
 void SetOAuth2ClientSecret(OAuth2Client client,
                            const std::string& client_secret);
 #endif
 
 // Returns if the API key using in the current build is the one for official
 // Google Chrome.
-bool IsGoogleChromeAPIKeyUsed();
+COMPONENT_EXPORT(GOOGLE_APIS) bool IsGoogleChromeAPIKeyUsed();
 
 }  // namespace google_apis