Revert of arc-bridge: Move most methods to Mojo interfaces

chrome/browser/chromeos/arc/arc_settings_bridge_impl.cc

Index: chrome/browser/chromeos/arc/arc_settings_bridge_impl.cc
diff --git a/chrome/browser/chromeos/arc/arc_settings_bridge_impl.cc b/chrome/browser/chromeos/arc/arc_settings_bridge_impl.cc
index 92dc936b7aaae6eb2d0da80edcdf181433b17bdf..62850448e43a9047791970ff16522b14ac7a3528 100644
--- a/chrome/browser/chromeos/arc/arc_settings_bridge_impl.cc
+++ b/chrome/browser/chromeos/arc/arc_settings_bridge_impl.cc
@@ -6,12 +6,10 @@
 
 #include <algorithm>
 
-#include "base/json/json_writer.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/stringprintf.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/common/pref_names.h"
-#include "components/arc/common/settings.mojom.h"
 
 namespace arc {
 
@@ -92,15 +90,18 @@
 
 void ArcSettingsBridgeImpl::OnStateChanged(ArcBridgeService::State state) {
   // ArcBridgeService::State::READY is emitted before ArcSettings app is ready
-  // to send broadcasts.  Instead we wait for the SettingsInstance to be ready.
+  // to send broadcasts.  Instead we wait for a later boot phase in
+  // OnInstanceBootPhase.
   if (state == ArcBridgeService::State::STOPPING) {
     StopObservingPrefChanges();
   }
 }
 
-void ArcSettingsBridgeImpl::OnSettingsInstanceReady() {
-  StartObservingPrefChanges();
-  SyncAllPrefs();
+void ArcSettingsBridgeImpl::OnInstanceBootPhase(InstanceBootPhase phase) {
+  if (phase == INSTANCE_BOOT_PHASE_ACTIVITY_MANAGER_READY) {
+    StartObservingPrefChanges();
+    SyncAllPrefs();
+  }
 }
 
 void ArcSettingsBridgeImpl::SyncSpokenFeedbackEnabled() const {
@@ -149,12 +150,9 @@
     return;
   }
 
-  std::string extras_json;
-  bool write_success = base::JSONWriter::Write(extras, &extras_json);
-  DCHECK(write_success);
-  bridge_service->settings_instance()->SendBroadcast(
-      action, "org.chromium.arc.settings",
-      "org.chromium.arc.settings.SettingsReceiver", extras_json);
+  bridge_service->SendBroadcast(action, "org.chromium.arc.settings",
+                                "org.chromium.arc.settings.SettingsReceiver",
+                                extras);
 }
 
 }  // namespace arc