Show a visual indicator for the progress of auto-click.

chrome/browser/ui/ash/ash_init.cc

Index: chrome/browser/ui/ash/ash_init.cc
diff --git a/chrome/browser/ui/ash/ash_init.cc b/chrome/browser/ui/ash/ash_init.cc
index 0ceb1aa4dc7a582ca5e223c940910e2cdac51dcd..93df7e812c572c00dd9630ad0d216723d1987c58 100644
--- a/chrome/browser/ui/ash/ash_init.cc
+++ b/chrome/browser/ui/ash/ash_init.cc
@@ -6,6 +6,7 @@
 
 #include "ash/accelerators/accelerator_controller.h"
 #include "ash/ash_switches.h"
+#include "ash/autoclick/autoclick_controller.h"
 #include "ash/high_contrast/high_contrast_controller.h"
 #include "ash/magnifier/magnification_controller.h"
 #include "ash/magnifier/partial_magnification_controller.h"
@@ -19,6 +20,7 @@
 #include "chrome/browser/browser_shutdown.h"
 #include "chrome/browser/chromeos/accessibility/accessibility_manager.h"
 #include "chrome/browser/chromeos/accessibility/magnification_manager.h"
+#include "chrome/browser/chromeos/ui/autoclick_ring_handler.h"
 #include "chrome/browser/lifetime/application_lifetime.h"
 #include "chrome/browser/ui/ash/chrome_screenshot_grabber.h"
 #include "chrome/browser/ui/ash/chrome_shell_content_state.h"
@@ -70,6 +72,9 @@ void OpenAsh(gfx::AcceleratedWidget remote_window) {
   ash::Shell* shell = ash::Shell::CreateInstance(shell_init_params);
   shell->accelerator_controller()->SetScreenshotDelegate(
       std::unique_ptr<ash::ScreenshotDelegate>(new ChromeScreenshotGrabber));
+  shell->autoclick_controller()->SetDelegate(
+      std::unique_ptr<ash::AutoclickController::Delegate>(

[jdufault, 2016/06/08 17:50:20]

Can you use base::WrapUnique?

[sammiequon, 2016/06/09 04:03:46]

Done.

+          new chromeos::AutoclickRingHandler));
   // TODO(flackr): Investigate exposing a blocking pool task runner to chromeos.
   chromeos::AccelerometerReader::GetInstance()->Initialize(
       content::BrowserThread::GetBlockingPool()