[fuchsia] Move SetAPIKey call to WebEngineMainDelegate::BasicStartupComplete()

In https://crrev.com/c/2613649, a call to google_apis::SetAPIKey() was
added in the main() function. However, there is no AtExitManager
registered by that point, resulting in a crash in builds with dchecks
enabled. This moves the call to google_apis::SetAPIKey() to be done in
WebEngineMainDelegate::BasicStartupComplete() instead.

Bug: 1168325
Change-Id: Iee034fb20c7d4d8563cbd9973943d87339619b71
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2638634
Commit-Queue: Fabrice de Gans-Riberi <fdegans@chromium.org>
Reviewed-by: Sharon Yang <yangsharon@chromium.org>
Reviewed-by: David Dorwin <ddorwin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#845004}

fuchsia/engine/BUILD.gn

@@ -112,6 +112,7 @@ component("web_engine_core") {
     "//fuchsia/base:message_port",
     "//fuchsia/base:modular",
     "//fuchsia/cast_streaming",
+    "//google_apis",
     "//gpu/command_buffer/service",
     "//media",
     "//media/fuchsia/cdm/service",
@@ -258,11 +259,9 @@ source_set("switches") {
 
 executable("web_engine_exe") {
   deps = [
-    ":switches",
     ":web_engine_core",
     "//base",
     "//content/public/app",
-    "//google_apis",
   ]
   sources = [ "web_engine_main.cc" ]
   visibility = [ ":*" ]

fuchsia/engine/web_engine_main.cc

@@ -9,16 +9,14 @@
 #include "content/public/common/content_switches.h"
 #include "fuchsia/engine/context_provider_impl.h"
 #include "fuchsia/engine/context_provider_main.h"
-#include "fuchsia/engine/switches.h"
 #include "fuchsia/engine/web_engine_main_delegate.h"
-#include "google_apis/google_api_keys.h"
 
 int main(int argc, const char** argv) {
   base::CommandLine::Init(argc, argv);
-  base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
 
   std::string process_type =
-      command_line->GetSwitchValueASCII(switches::kProcessType);
+      base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
+          switches::kProcessType);
   fidl::InterfaceRequest<fuchsia::web::Context> context;
 
   if (process_type.empty()) {
@@ -43,10 +41,5 @@ int main(int argc, const char** argv) {
   params.argc = 0;
   params.argv = nullptr;
 
-  if (command_line->HasSwitch(switches::kGoogleApiKey)) {
-    google_apis::SetAPIKey(
-        command_line->GetSwitchValueASCII(switches::kGoogleApiKey));
-  }
-
   return content::ContentMain(params);
 }

fuchsia/engine/web_engine_main_delegate.cc

@@ -20,6 +20,7 @@
 #include "fuchsia/engine/common/web_engine_content_client.h"
 #include "fuchsia/engine/renderer/web_engine_content_renderer_client.h"
 #include "fuchsia/engine/switches.h"
+#include "google_apis/google_api_keys.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/base/ui_base_paths.h"
 
@@ -86,6 +87,11 @@ bool WebEngineMainDelegate::BasicStartupComplete(int* exit_code) {
     return true;
   }
 
+  if (command_line->HasSwitch(switches::kGoogleApiKey)) {
+    google_apis::SetAPIKey(
+        command_line->GetSwitchValueASCII(switches::kGoogleApiKey));
+  }
+
   SetCorsExemptHeaders(base::SplitString(
       base::CommandLine::ForCurrentProcess()->GetSwitchValueNative(
           switches::kCorsExemptHeaders),