Added a command line flag to pass a custom Autofill API key.

Change-Id: Ic84e3b2fc4126937a4227d20f0acf03a2f8bcfba
Reviewed-on: https://chromium-review.googlesource.com/c/1355425Reviewed-by: Roger McFarlane <rogerm@chromium.org>
Commit-Queue: Vincent Boisselle <vincb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#612407}

components/autofill/core/browser/autofill_manager.cc

@@ -172,6 +172,13 @@ void LogDeveloperEngagementUkm(ukm::UkmRecorder* ukm_recorder,
 }
 
 std::string GetAPIKeyForUrl(version_info::Channel channel) {
+  // First look if we can get API key from command line flag.
+  const base::CommandLine& command_line =
+      *base::CommandLine::ForCurrentProcess();
+  if (command_line.HasSwitch(switches::kAutofillAPIKey))
+    return command_line.GetSwitchValueASCII(switches::kAutofillAPIKey);
+
+  // Get the API key from Chrome baked keys.
   if (channel == version_info::Channel::STABLE)
     return google_apis::GetAPIKey();
   return google_apis::GetNonStableAPIKey();

components/autofill/core/common/autofill_switches.cc

@@ -8,6 +8,11 @@
 namespace autofill {
 namespace switches {
 
+// Sets the API key that will be used when calling Autofill API instead of
+// using Chrome's baked key by default. You can use this to test new versions
+// of the API that are not linked to the Chrome baked key yet.
+const char kAutofillAPIKey[] = "autofill-api-key";
+
 // Override the default autofill server URL with "scheme://host[:port]/prefix/".
 const char kAutofillServerURL[] = "autofill-server-url";
 

components/autofill/core/common/autofill_switches.h

@@ -12,6 +12,7 @@ namespace switches {
 
 // All switches in alphabetical order. The switches should be documented
 // alongside the definition of their values in the .cc file.
+extern const char kAutofillAPIKey[];
 extern const char kAutofillServerURL[];
 extern const char kAutofillMetadataUploadEncoding[];
 extern const char kDisableOfferStoreUnmaskedWalletCards[];