Use mojo volume interfaces for mash and classic ash.

chrome/browser/ui/ash/volume_controller_chromeos.cc

Index: chrome/browser/ui/ash/volume_controller_chromeos.cc
diff --git a/chrome/browser/ui/ash/volume_controller_chromeos.cc b/chrome/browser/ui/ash/volume_controller_chromeos.cc
index 68dd5928b4e39576e48953f9e9512a0b8257f21c..b06bde14c201c17fa83cb9acdc0b6ee87028a5d1 100644
--- a/chrome/browser/ui/ash/volume_controller_chromeos.cc
+++ b/chrome/browser/ui/ash/volume_controller_chromeos.cc
@@ -5,13 +5,11 @@
 #include "chrome/browser/ui/ash/volume_controller_chromeos.h"
 
 #include "base/command_line.h"
-#include "chrome/browser/browser_process.h"
 #include "chrome/browser/chromeos/accessibility/accessibility_manager.h"
 #include "chrome/browser/extensions/api/system_private/system_private_api.h"
 #include "chrome/grit/browser_resources.h"
 #include "chromeos/audio/chromeos_sounds.h"
 #include "chromeos/chromeos_switches.h"
-#include "content/public/browser/user_metrics.h"
 #include "media/audio/sounds/sounds_manager.h"
 #include "ui/base/resource/resource_bundle.h"
 
@@ -52,17 +50,16 @@ VolumeController::~VolumeController() {
     CrasAudioHandler::Get()->RemoveAudioObserver(this);
 }
 
-void VolumeController::HandleVolumeMute(const ui::Accelerator& accelerator) {
-  if (accelerator.key_code() == ui::VKEY_VOLUME_MUTE)
-    content::RecordAction(base::UserMetricsAction("Accel_VolumeMute_F8"));
+void VolumeController::BindRequest(
+    ash::mojom::VolumeControllerRequest request) {
+  bindings_.AddBinding(this, std::move(request));
+}
 
+void VolumeController::VolumeMute() {
   CrasAudioHandler::Get()->SetOutputMute(true);
 }
 
-void VolumeController::HandleVolumeDown(const ui::Accelerator& accelerator) {
-  if (accelerator.key_code() == ui::VKEY_VOLUME_DOWN)
-    content::RecordAction(base::UserMetricsAction("Accel_VolumeDown_F9"));
-
+void VolumeController::VolumeDown() {
   CrasAudioHandler* audio_handler = CrasAudioHandler::Get();
   if (audio_handler->IsOutputMuted()) {
     audio_handler->SetOutputVolumePercent(0);
@@ -75,10 +72,7 @@ void VolumeController::HandleVolumeDown(const ui::Accelerator& accelerator) {
   }
 }
 
-void VolumeController::HandleVolumeUp(const ui::Accelerator& accelerator) {
-  if (accelerator.key_code() == ui::VKEY_VOLUME_UP)
-    content::RecordAction(base::UserMetricsAction("Accel_VolumeUp_F10"));
-
+void VolumeController::VolumeUp() {
   CrasAudioHandler* audio_handler = CrasAudioHandler::Get();
   bool play_sound = false;
   if (audio_handler->IsOutputMuted()) {