Add help button to app launcher.

Goes to https://support.google.com/chrome/?p=cws_app_launcher.

BUG=225068

Review URL: https://chromiumcodereview.appspot.com/14007002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@202740 0039d316-1c4b-4281-b951-d872f2087c98

ash/shell/app_list.cc

@@ -307,6 +307,10 @@ class ExampleAppListViewDelegate : public app_list::AppListViewDelegate {
     // Nothing needs to be done.
   }
 
+  virtual void OpenHelp() OVERRIDE {
+    // Nothing needs to be done.
+  }
+
   virtual void OpenFeedback() OVERRIDE {
     // Nothing needs to be done.
   }

chrome/browser/ui/app_list/app_list_view_delegate.cc

@@ -17,6 +17,8 @@
 #include "chrome/browser/ui/chrome_pages.h"
 #include "chrome/browser/ui/host_desktop.h"
 #include "chrome/common/extensions/extension_constants.h"
+#include "chrome/common/url_constants.h"
+#include "content/public/browser/page_navigator.h"
 #include "content/public/browser/user_metrics.h"
 
 #if defined(USE_ASH)
@@ -134,6 +136,18 @@ void AppListViewDelegate::OpenSettings() {
   controller_->ActivateApp(profile_, extension, 0);
 }
 
+void AppListViewDelegate::OpenHelp() {
+  chrome::HostDesktopType desktop = chrome::GetHostDesktopTypeForNativeWindow(
+      controller_->GetAppListWindow());
+  Browser* browser = chrome::FindOrCreateTabbedBrowser(
+      profile_, desktop);
+  browser->OpenURL(content::OpenURLParams(GURL(chrome::kAppLauncherHelpURL),
+                                          content::Referrer(),
+                                          NEW_FOREGROUND_TAB,
+                                          content::PAGE_TRANSITION_LINK,
+                                          false));
+}
+
 void AppListViewDelegate::OpenFeedback() {
   chrome::HostDesktopType desktop = chrome::GetHostDesktopTypeForNativeWindow(
       controller_->GetAppListWindow());

chrome/browser/ui/app_list/app_list_view_delegate.h

@@ -54,6 +54,7 @@ class AppListViewDelegate : public app_list::AppListViewDelegate {
   virtual string16 GetCurrentUserName() OVERRIDE;
   virtual string16 GetCurrentUserEmail() OVERRIDE;
   virtual void OpenSettings() OVERRIDE;
+  virtual void OpenHelp() OVERRIDE;
   virtual void OpenFeedback() OVERRIDE;
 
   scoped_ptr<app_list::SigninDelegate> signin_delegate_;

chrome/common/url_constants.cc

@@ -459,6 +459,9 @@ const char kCloudPrintLearnMoreURL[] =
 const char kInvalidPasswordHelpURL[] =
     "https://support.google.com/accounts/bin/answer.py?ctx=ch&answer=27444";
 
+const char kAppLauncherHelpURL[] =
+    "https://support.google.com/chrome_webstore/?p=cws_app_launcher";
+
 const char kCanNotAccessAccountURL[] =
     "https://support.google.com/accounts/bin/answer.py?answer=48598";
 

chrome/common/url_constants.h

@@ -374,6 +374,9 @@ extern const char kSyncEverythingLearnMoreURL[];
 // The URL for information on how to recover your password.
 extern const char kInvalidPasswordHelpURL[];
 
+// The URL for information on how to use the app launcher.
+extern const char kAppLauncherHelpURL[];
+
 // The URL for information on what to do if you can't sign in to your Google
 // account.
 extern const char kCanNotAccessAccountURL[];

ui/app_list/app_list_menu.cc

@@ -27,6 +27,9 @@ void AppListMenu::InitMenu() {
   menu_model_.AddItem(SHOW_SETTINGS, l10n_util::GetStringUTF16(
       IDS_APP_LIST_OPEN_SETTINGS));
 
+  menu_model_.AddItem(SHOW_HELP, l10n_util::GetStringUTF16(
+      IDS_APP_LIST_HELP));
+
   menu_model_.AddItem(SHOW_FEEDBACK, l10n_util::GetStringUTF16(
       IDS_APP_LIST_OPEN_FEEDBACK));
 }
@@ -51,6 +54,9 @@ void AppListMenu::ExecuteCommand(int command_id, int event_flags) {
     case SHOW_SETTINGS:
       delegate_->OpenSettings();
       break;
+    case SHOW_HELP:
+      delegate_->OpenHelp();
+      break;
     case SHOW_FEEDBACK:
       delegate_->OpenFeedback();
       break;

ui/app_list/app_list_menu.h

@@ -19,6 +19,7 @@ class AppListMenu : public ui::SimpleMenuModel::Delegate {
   enum AppListMenuCommands {
     CURRENT_USER,
     SHOW_SETTINGS,
+    SHOW_HELP,
     SHOW_FEEDBACK,
   };
 

ui/app_list/app_list_view_delegate.h

@@ -74,6 +74,9 @@ class APP_LIST_EXPORT AppListViewDelegate {
   // Open the settings UI.
   virtual void OpenSettings() = 0;
 
+  // Open the help UI.
+  virtual void OpenHelp() = 0;
+
   // Open the feedback UI.
   virtual void OpenFeedback() = 0;
 };

ui/app_list/test/app_list_test_view_delegate.h

@@ -40,6 +40,7 @@ class AppListTestViewDelegate  : public AppListViewDelegate {
   virtual string16 GetCurrentUserName() OVERRIDE;
   virtual string16 GetCurrentUserEmail() OVERRIDE;
   virtual void OpenSettings() OVERRIDE {}
+  virtual void OpenHelp() OVERRIDE {}
   virtual void OpenFeedback() OVERRIDE {}
 
  private:

ui/base/strings/ui_strings.grd

@@ -496,6 +496,9 @@ need to be translated for each locale.-->
       </message>
 
       <!-- App list -->
+      <message name="IDS_APP_LIST_HELP" desc="The menu entry to show the app list help UI.">
+        Help
+      </message>
       <message name="IDS_APP_LIST_OPEN_SETTINGS" desc="The menu entry to show the settings UI.">
         Settings
       </message>