A11y: Introduce High Contrast Mode and Screen Magnifier to ubar tray.

This patch add a sub-menu to set accessibility feature (spoken feedback, high-contrast and screen magnifier) under accessibility menu.

The design is at http://crbug.com/158281.

BUG=160689, 158307
TEST=manual

TBR=nkostylev@chromium.org, jhawkins@chromium.org
# TBRing for just rename changes.

Review URL: https://codereview.chromium.org/11415025

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@170180 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 30 insertions, 1 deletions

diff --git a/ash/shell/shell_delegate_impl.cc b/ash/shell/shell_delegate_impl.cc
index b62bbc3..1d569c8 100644
--- a/ash/shell/shell_delegate_impl.cc
+++ b/ash/shell/shell_delegate_impl.cc
@@ -22,7 +22,9 @@ ShellDelegateImpl::ShellDelegateImpl()
     : watcher_(NULL),
       launcher_delegate_(NULL),
       locked_(false),
-      spoken_feedback_enabled_(false) {
+      spoken_feedback_enabled_(false),
+      high_contrast_enabled_(false),
+      screen_magnifier_type_(MAGNIFIER_OFF) {
 }
 
 ShellDelegateImpl::~ShellDelegateImpl() {
@@ -122,6 +124,26 @@ bool ShellDelegateImpl::IsSpokenFeedbackEnabled() const {
   return spoken_feedback_enabled_;
 }
 
+void ShellDelegateImpl::ToggleHighContrast() {
+  high_contrast_enabled_ = !high_contrast_enabled_;
+}
+
+bool ShellDelegateImpl::IsHighContrastEnabled() const {
+  return high_contrast_enabled_;
+}
+
+void ShellDelegateImpl::SetMagnifier(MagnifierType type) {
+  screen_magnifier_type_ = type;
+}
+
+MagnifierType ShellDelegateImpl::GetMagnifierType() const {
+  return screen_magnifier_type_;
+}
+
+bool ShellDelegateImpl::ShouldAlwaysShowAccessibilityMenu() const {
+  return false;
+}
+
 app_list::AppListViewDelegate* ShellDelegateImpl::CreateAppListViewDelegate() {
   return ash::shell::CreateAppListViewDelegate();
 }
diff --git a/ash/shell/shell_delegate_impl.h b/ash/shell/shell_delegate_impl.h
index 91f413ec..555e87f 100644
--- a/ash/shell/shell_delegate_impl.h
+++ b/ash/shell/shell_delegate_impl.h
@@ -43,6 +43,11 @@ class ShellDelegateImpl : public ash::ShellDelegate {
   virtual content::BrowserContext* GetCurrentBrowserContext() OVERRIDE;
   virtual void ToggleSpokenFeedback() OVERRIDE;
   virtual bool IsSpokenFeedbackEnabled() const OVERRIDE;
+  virtual void ToggleHighContrast() OVERRIDE;
+  virtual bool IsHighContrastEnabled() const OVERRIDE;
+  virtual void SetMagnifier(MagnifierType type) OVERRIDE;
+  virtual MagnifierType GetMagnifierType() const OVERRIDE;
+  virtual bool ShouldAlwaysShowAccessibilityMenu() const OVERRIDE;
   virtual app_list::AppListViewDelegate* CreateAppListViewDelegate() OVERRIDE;
   virtual ash::LauncherDelegate* CreateLauncherDelegate(
       ash::LauncherModel* model) OVERRIDE;
@@ -72,6 +77,8 @@ class ShellDelegateImpl : public ash::ShellDelegate {
 
   bool locked_;
   bool spoken_feedback_enabled_;
+  bool high_contrast_enabled_;
+  MagnifierType screen_magnifier_type_;
 
   DISALLOW_COPY_AND_ASSIGN(ShellDelegateImpl);
 };