Add display scaling and rotation shortcuts to keyboard overlay.

chrome/browser/ui/webui/chromeos/keyboard_overlay_ui.cc

Index: chrome/browser/ui/webui/chromeos/keyboard_overlay_ui.cc
diff --git a/chrome/browser/ui/webui/chromeos/keyboard_overlay_ui.cc b/chrome/browser/ui/webui/chromeos/keyboard_overlay_ui.cc
index db81f9f8a873ab5711afec5f67e498e6db64ef6a..9f77f0762be42833ccca8ca3de4b65b2fc698897 100644
--- a/chrome/browser/ui/webui/chromeos/keyboard_overlay_ui.cc
+++ b/chrome/browser/ui/webui/chromeos/keyboard_overlay_ui.cc
@@ -4,6 +4,8 @@
 
 #include "chrome/browser/ui/webui/chromeos/keyboard_overlay_ui.h"
 
+#include "ash/display/display_manager.h"
+#include "ash/shell.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
@@ -192,7 +194,10 @@ struct I18nContentToMessage {
     IDS_KEYBOARD_OVERLAY_REOPEN_LAST_CLOSED_TAB },
   { "keyboardOverlayReportIssue", IDS_KEYBOARD_OVERLAY_REPORT_ISSUE },
   { "keyboardOverlayResetZoom", IDS_KEYBOARD_OVERLAY_RESET_ZOOM },
+  { "keyboardOverlayRotateScreen", IDS_KEYBOARD_OVERLAY_ROTATE_SCREEN },
   { "keyboardOverlaySave", IDS_KEYBOARD_OVERLAY_SAVE },
+  { "keyboardOverlayScaleDownUi", IDS_KEYBOARD_OVERLAY_SCALE_DOWN_UI },
+  { "keyboardOverlayScaleUpUi", IDS_KEYBOARD_OVERLAY_SCALE_UP_UI },
   { "keyboardOverlayScreenshotRegion",
     IDS_KEYBOARD_OVERLAY_SCREENSHOT_REGION },
   { "keyboardOverlayScrollUpOnePage",
@@ -251,6 +256,16 @@ content::WebUIDataSource* CreateKeyboardOverlayUIHTMLSource() {
           switches::kHasChromeOSDiamondKey) ? "true" : "false";
   source->AddString("keyboardOverlayHasChromeOSDiamondKey",
                     has_diamond_key_value);
+  ash::Shell* shell = ash::Shell::GetInstance();
+  if (shell) {
+    ash::internal::DisplayManager* display_manager = shell->display_manager();
+    source->AddString("keyboardOverlayIsDisplayRotationEnabled",
+                      display_manager->IsDisplayRotationEnabled() ?
+                      "true" : "false");

[xiyuan, 2013/03/23 05:49:09]

nit: you could use source->AddBoolean and test that directly in js.

[mazda, 2013/03/23 06:28:45]

Cool! Thanks.

+    source->AddString("keyboardOverlayIsDisplayUIScalingEnabled",
+                      display_manager->IsDisplayUIScalingEnabled() ?
+                      "true" : "false");
+  }
   source->SetJsonPath("strings.js");
   source->SetUseJsonJSFormatV2();
   source->AddResourcePath("keyboard_overlay.js", IDR_KEYBOARD_OVERLAY_JS);