Remove unused Chrome automation api

The Chrome channel was once used by ChromeVox to disable ChromeVox Classic (use ChromeVox Next) when in dev channel. Since ChromeVox/ChromeVox Next now ships by default everywhere, this is no longer necessary.

Original change
https://codereview.chromium.org/2640503002

TBR=dcheng@chromium.org

Change-Id: I0b9b4f844ec5d3b40171027da5e04e0fb248eb49
Reviewed-on: https://chromium-review.googlesource.com/1239439Reviewed-by: David Tseng <dtseng@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Reviewed-by: Dominic Mazzoni <dmazzoni@chromium.org>
Commit-Queue: David Tseng <dtseng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#593420}

chrome/browser/resources/chromeos/chromevox/cvox2/background/background.js

@@ -139,11 +139,6 @@ Background = function() {
    */
   this.focusRecoveryMap_ = new WeakMap();
 
-  chrome.automation.getDesktop(function(desktop) {
-    /** @type {string} */
-    this.chromeChannel_ = desktop.chromeChannel;
-  }.bind(this));
-
   CommandHandler.init();
   FindHandler.init();
 

chrome/browser/ui/aura/accessibility/ax_root_obj_wrapper.cc

@@ -7,7 +7,6 @@
 #include "base/stl_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/ui/aura/accessibility/automation_manager_aura.h"
-#include "chrome/common/channel_info.h"
 #include "ui/accessibility/ax_enums.mojom.h"
 #include "ui/accessibility/ax_node_data.h"
 #include "ui/aura/env.h"
@@ -74,9 +73,6 @@ void AXRootObjWrapper::GetChildren(
 void AXRootObjWrapper::Serialize(ui::AXNodeData* out_node_data) {
   out_node_data->id = unique_id_.Get();
   out_node_data->role = ax::mojom::Role::kDesktop;
-  out_node_data->AddStringAttribute(ax::mojom::StringAttribute::kChromeChannel,
-                                    chrome::GetChannelName());
-
   display::Screen* screen = display::Screen::GetScreen();
   if (!screen)
     return;

chrome/renderer/resources/extensions/automation/automation_node.js

@@ -1269,10 +1269,6 @@ AutomationRootNodeImpl.prototype = {
     return result;
   },
 
-  get chromeChannel() {
-    return GetStringAttribute(this.treeID, this.id, 'chromeChannel');
-  },
-
   get docUrl() {
     return GetDocURL(this.treeID);
   },
@@ -1491,7 +1487,6 @@ function AutomationRootNode() {
 utils.expose(AutomationRootNode, AutomationRootNodeImpl, {
   superclass: AutomationNode,
   readonly: [
-    'chromeChannel',
     'docTitle',
     'docUrl',
     'docLoaded',

chromecast/browser/ui/aura/accessibility/ax_root_obj_wrapper.cc

@@ -56,9 +56,6 @@ void AXRootObjWrapper::GetChildren(
 void AXRootObjWrapper::Serialize(ui::AXNodeData* out_node_data) {
   out_node_data->id = unique_id_.Get();
   out_node_data->role = ax::mojom::Role::kDesktop;
-  // TODO(rmrossi) : Find out of this can be removed
-  out_node_data->AddStringAttribute(ax::mojom::StringAttribute::kChromeChannel,
-                                    "");
 }
 
 const ui::AXUniqueId& AXRootObjWrapper::GetUniqueId() const {

ui/accessibility/ax_enum_util.cc

@@ -1162,8 +1162,6 @@ const char* ToString(ax::mojom::StringAttribute string_attribute) {
       return "ariaInvalidValue";
     case ax::mojom::StringAttribute::kAutoComplete:
       return "autoComplete";
-    case ax::mojom::StringAttribute::kChromeChannel:
-      return "chromeChannel";
     case ax::mojom::StringAttribute::kClassName:
       return "className";
     case ax::mojom::StringAttribute::kContainerLiveRelevant:
@@ -1216,8 +1214,6 @@ ax::mojom::StringAttribute ParseStringAttribute(const char* string_attribute) {
     return ax::mojom::StringAttribute::kAriaInvalidValue;
   if (0 == strcmp(string_attribute, "autoComplete"))
     return ax::mojom::StringAttribute::kAutoComplete;
-  if (0 == strcmp(string_attribute, "chromeChannel"))
-    return ax::mojom::StringAttribute::kChromeChannel;
   if (0 == strcmp(string_attribute, "className"))
     return ax::mojom::StringAttribute::kClassName;
   if (0 == strcmp(string_attribute, "containerLiveRelevant"))

ui/accessibility/ax_enums.mojom

@@ -426,7 +426,6 @@ enum StringAttribute {
    // Only used when invalid_state == invalid_state_other.
   kAriaInvalidValue,
   kAutoComplete,
-  kChromeChannel,   // Native / Automation
   kClassName,       // Native / Android
   kContainerLiveRelevant,
   kContainerLiveStatus,

ui/accessibility/ax_node_data.cc

@@ -914,9 +914,6 @@ std::string AXNodeData::ToString() const {
       case ax::mojom::StringAttribute::kAutoComplete:
         result += " autocomplete=" + value;
         break;
-      case ax::mojom::StringAttribute::kChromeChannel:
-        result += " chrome_channel=" + value;
-        break;
       case ax::mojom::StringAttribute::kClassName:
         result += " class_name=" + value;
         break;