Add chrome.virtualKeyboardPrivate.openSettings api to open settings page

This will open chrome://settings/languages page after called.

BUG=

Review URL: https://codereview.chromium.org/342573002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@278439 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/extensions/api/input/input.cc

@@ -8,6 +8,9 @@
 #include "base/lazy_instance.h"
 #include "base/metrics/histogram.h"
 #include "base/strings/string16.h"
+#include "chrome/browser/profiles/profile_manager.h"
+#include "chrome/browser/ui/chrome_pages.h"
+#include "chrome/common/url_constants.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/user_metrics.h"
 #include "extensions/browser/extension_function_registry.h"
@@ -162,6 +165,19 @@ bool VirtualKeyboardPrivateGetKeyboardConfigFunction::RunSync() {
 #endif
 }
 
+bool VirtualKeyboardPrivateOpenSettingsFunction::RunSync() {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+#if defined(USE_ASH)
+  content::RecordAction(base::UserMetricsAction("OpenLanguageOptionsDialog"));
+  chrome::ShowSettingsSubPageForProfile(
+      ProfileManager::GetActiveUserProfile(), chrome::kLanguageOptionsSubPage);
+  return true;
+#else
+  error_ = kNotYetImplementedError;
+  return false;
+#endif
+}
+
 InputAPI::InputAPI(content::BrowserContext* context) {}
 
 InputAPI::~InputAPI() {

chrome/browser/extensions/api/input/input.h

@@ -109,6 +109,20 @@ class VirtualKeyboardPrivateGetKeyboardConfigFunction
   virtual bool RunSync() OVERRIDE;
 };
 
+class VirtualKeyboardPrivateOpenSettingsFunction
+    : public SyncExtensionFunction {
+ public:
+  DECLARE_EXTENSION_FUNCTION("virtualKeyboardPrivate.openSettings",
+                             VIRTUALKEYBOARDPRIVATE_OPENSETTINGS);
+
+ protected:
+  virtual ~VirtualKeyboardPrivateOpenSettingsFunction() {}
+
+  // ExtensionFunction:
+  virtual bool RunSync() OVERRIDE;
+};
+
+
 class InputAPI : public BrowserContextKeyedAPI {
  public:
   explicit InputAPI(content::BrowserContext* context);

chrome/common/extensions/api/virtual_keyboard_private.json

@@ -149,6 +149,13 @@
             ]
           }
         ]
+      },
+      {
+        "name": "openSettings",
+        "type": "function",
+        "description": "Opens chrome://settings/languages page.",
+        "parameters": [
+        ]
       }
     ],
     "events": [

extensions/browser/extension_function_histogram_value.h

@@ -850,6 +850,7 @@ enum HistogramValue {
   INPUTMETHODPRIVATE_SETCURRENTINPUTMETHOD,
   INPUTMETHODPRIVATE_GETINPUTMETHODS,
   IDENTITY_GETPROFILEUSERINFO,
+  VIRTUALKEYBOARDPRIVATE_OPENSETTINGS,
   // Last entry: Add new entries above and ensure to update
   // tools/metrics/histograms/histograms/histograms.xml.
   ENUM_BOUNDARY

tools/metrics/histograms/histograms.xml

@@ -36585,6 +36585,7 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   <int value="789" label="INPUTMETHODPRIVATE_SETCURRENTINPUTMETHOD"/>
   <int value="790" label="INPUTMETHODPRIVATE_GETINPUTMETHODS"/>
   <int value="791" label="IDENTITY_GETPROFILEUSERINFO"/>
+  <int value="792" label="VIRTUALKEYBOARDPRIVATE_OPENSETTINGS"/>
 </enum>
 
 <enum name="ExtensionInstallCause" type="int">