HTML Meter tag should have MSAA+IA2 as ROLE_SYSTEM_PROGRESSBAR.

According to latest editor's draft http://rawgit.com/w3c/html-api-map/master/index.html
meter tag should have MSAA+IA2 Role as ROLE_SYSTEM_PROGRESSBAR.
And for mac, the AX Mappings should be copy of ARIA role progressbar.

This CL depends on https://codereview.chromium.org/652663003/

This CL also takes care of small fixes related with details tag and div tag.

BUG=421376

Review URL: https://codereview.chromium.org/657513002

Cr-Commit-Position: refs/heads/master@{#299944}

chrome/common/extensions/api/automation.idl

@@ -127,6 +127,7 @@
     menuListOption,
     menuListPopup,
     menu,
+    meter,
     navigation,
     note,
     outline,

content/browser/accessibility/browser_accessibility_android.cc

@@ -243,6 +243,7 @@ const char* BrowserAccessibilityAndroid::GetClassName() const {
     case ui::AX_ROLE_SVG_ROOT:
       class_name = "android.widget.Image";
       break;
+    case ui::AX_ROLE_METER:
     case ui::AX_ROLE_PROGRESS_INDICATOR:
       class_name = "android.widget.ProgressBar";
       break;

content/browser/accessibility/browser_accessibility_win.cc

@@ -3460,6 +3460,7 @@ void BrowserAccessibilityWin::InitRoleAndState() {
       break;
     case ui::AX_ROLE_DIV:
       role_name_ = L"div";
+      ia_role_ = ROLE_SYSTEM_GROUPING;
       ia2_role_ = IA2_ROLE_SECTION;
       break;
     case ui::AX_ROLE_DEFINITION:
@@ -3482,6 +3483,7 @@ void BrowserAccessibilityWin::InitRoleAndState() {
       ia_state_ |= STATE_SYSTEM_READONLY;
       break;
     case ui::AX_ROLE_DETAILS:
+      role_name_ = html_tag;
       ia_role_ = ROLE_SYSTEM_GROUPING;
       break;
     case ui::AX_ROLE_DIALOG:
@@ -3645,6 +3647,10 @@ void BrowserAccessibilityWin::InitRoleAndState() {
           ia_state_ |= STATE_SYSTEM_FOCUSED;
       }
       break;
+    case ui::AX_ROLE_METER:
+      role_name_ = html_tag;
+      ia_role_ = ROLE_SYSTEM_PROGRESSBAR;
+      break;
     case ui::AX_ROLE_NAVIGATION:
       ia_role_ = ROLE_SYSTEM_GROUPING;
       ia2_role_ = IA2_ROLE_SECTION;

content/renderer/accessibility/blink_ax_enum_conversion.cc

@@ -226,6 +226,8 @@ ui::AXRole AXRoleFromBlink(blink::WebAXRole role) {
       return ui::AX_ROLE_MENU_LIST_OPTION;
     case blink::WebAXRoleMenuListPopup:
       return ui::AX_ROLE_MENU_LIST_POPUP;
+    case blink::WebAXRoleMeter:
+      return ui::AX_ROLE_METER;
     case blink::WebAXRoleNavigation:
       return ui::AX_ROLE_NAVIGATION;
     case blink::WebAXRoleNone:

content/shell/renderer/test_runner/web_ax_object_proxy.cc

@@ -162,6 +162,8 @@ std::string RoleToString(blink::WebAXRole role)
       return result.append("MenuListPopup");
     case blink::WebAXRoleMenu:
       return result.append("Menu");
+    case blink::WebAXRoleMeter:
+      return result.append("Meter");
     case blink::WebAXRoleNavigation:
       return result.append("Navigation");
     case blink::WebAXRoleNone:

content/test/data/accessibility/meter-expected-mac.txt

 #<skip -- Unskip this with chromium side changes>
 AXWebArea AXRoleDescription='HTML content'
-    AXGroup AXRoleDescription='group'
+    AXProgressIndicator AXRoleDescription='progress indicator'

content/test/data/accessibility/meter-expected-win.txt

 #<skip -- Unskip this with chromium side changes>
 ROLE_SYSTEM_DOCUMENT READONLY FOCUSABLE
     IA2_ROLE_SECTION READONLY
+        ROLE_SYSTEM_PROGRESSBAR

ui/accessibility/ax_enums.idl

@@ -136,6 +136,7 @@
     menu_list_option,
     menu_list_popup,
     menu,
+    meter,
     navigation,
     note,
     outline,

ui/accessibility/platform/ax_platform_node_mac.mm

@@ -87,6 +87,7 @@ RoleMap BuildRoleMap() {
       {ui::AX_ROLE_MENU_ITEM_RADIO, NSAccessibilityMenuItemRole},
       {ui::AX_ROLE_MENU_LIST_OPTION, NSAccessibilityMenuItemRole},
       {ui::AX_ROLE_MENU_LIST_POPUP, NSAccessibilityUnknownRole},
+      {ui::AX_ROLE_METER, NSAccessibilityProgressIndicatorRole},
       {ui::AX_ROLE_NAVIGATION, NSAccessibilityGroupRole},
       {ui::AX_ROLE_NONE, NSAccessibilityGroupRole},
       {ui::AX_ROLE_NOTE, NSAccessibilityGroupRole},