[SystemInfo API] Add Storage Watch API Definition.

BUG=177605
TEST=compiled

Review URL: https://chromiumcodereview.appspot.com/15815002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@204019 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/extensions/api/system_info_storage/system_info_storage_api.cc

@@ -33,4 +33,50 @@ void SystemInfoStorageGetFunction::OnGetStorageInfoCompleted(
   SendResponse(success);
 }
 
+SystemInfoStorageAddWatchFunction::SystemInfoStorageAddWatchFunction() {
+}
+
+SystemInfoStorageAddWatchFunction::~SystemInfoStorageAddWatchFunction() {
+}
+
+bool SystemInfoStorageAddWatchFunction::RunImpl() {
+  // TODO(Haojian): Implement the addWatch api.
+  return false;
+}
+
+SystemInfoStorageRemoveWatchFunction::SystemInfoStorageRemoveWatchFunction() {
+}
+
+SystemInfoStorageRemoveWatchFunction::~SystemInfoStorageRemoveWatchFunction() {
+}
+
+bool SystemInfoStorageRemoveWatchFunction::RunImpl() {
+  // TODO(Haojian): Implement the removeWatch api.
+  return false;
+}
+
+SystemInfoStorageGetAllWatchFunction::SystemInfoStorageGetAllWatchFunction() {
+}
+
+SystemInfoStorageGetAllWatchFunction::~SystemInfoStorageGetAllWatchFunction() {
+}
+
+bool SystemInfoStorageGetAllWatchFunction::RunImpl() {
+  // TODO(Haojian): Implement the getAllWatch api.
+  return false;
+}
+
+SystemInfoStorageRemoveAllWatchFunction::
+SystemInfoStorageRemoveAllWatchFunction() {
+}
+
+SystemInfoStorageRemoveAllWatchFunction::
+~SystemInfoStorageRemoveAllWatchFunction() {
+}
+
+bool SystemInfoStorageRemoveAllWatchFunction::RunImpl() {
+  // TODO(Haojian): Implement the removeAllWatch api.
+  return false;
+}
+
 }  // namespace extensions

chrome/browser/extensions/api/system_info_storage/system_info_storage_api.h

@@ -24,6 +24,50 @@ class SystemInfoStorageGetFunction : public AsyncExtensionFunction {
   void OnGetStorageInfoCompleted(const StorageInfo& info, bool success);
 };
 
+class SystemInfoStorageAddWatchFunction : public AsyncExtensionFunction {
+ public:
+  DECLARE_EXTENSION_FUNCTION("experimental.systemInfo.storage.addWatch",
+                             EXPERIMENTAL_SYSTEMINFO_STORAGE_ADDWATCH);
+  SystemInfoStorageAddWatchFunction();
+
+ private:
+  virtual ~SystemInfoStorageAddWatchFunction();
+  virtual bool RunImpl() OVERRIDE;
+};
+
+class SystemInfoStorageRemoveWatchFunction : public SyncExtensionFunction {
+ public:
+  DECLARE_EXTENSION_FUNCTION("experimental.systemInfo.storage.removeWatch",
+                             EXPERIMENTAL_SYSTEMINFO_STORAGE_REMOVEWATCH);
+  SystemInfoStorageRemoveWatchFunction();
+
+ private:
+  virtual ~SystemInfoStorageRemoveWatchFunction();
+  virtual bool RunImpl() OVERRIDE;
+};
+
+class SystemInfoStorageGetAllWatchFunction : public SyncExtensionFunction {
+ public:
+  DECLARE_EXTENSION_FUNCTION("experimental.systemInfo.storage.getAllWatch",
+                             EXPERIMENTAL_SYSTEMINFO_STORAGE_GETALLWATCH);
+  SystemInfoStorageGetAllWatchFunction();
+
+ private:
+  virtual ~SystemInfoStorageGetAllWatchFunction();
+  virtual bool RunImpl() OVERRIDE;
+};
+
+class SystemInfoStorageRemoveAllWatchFunction : public SyncExtensionFunction {
+ public:
+  DECLARE_EXTENSION_FUNCTION("experimental.systemInfo.storage.removeAllWatch",
+                             EXPERIMENTAL_SYSTEMINFO_STORAGE_REMOVEALLWATCH);
+  SystemInfoStorageRemoveAllWatchFunction();
+
+ private:
+  virtual ~SystemInfoStorageRemoveAllWatchFunction();
+  virtual bool RunImpl() OVERRIDE;
+};
+
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_SYSTEM_INFO_STORAGE_SYSTEM_INFO_STORAGE_API_H_

chrome/browser/extensions/extension_function_histogram_value.h

@@ -541,6 +541,10 @@ enum HistogramValue {
   TTS_PAUSE,
   TTS_RESUME,
   SYSTEMINFO_CPU_GET,
+  EXPERIMENTAL_SYSTEMINFO_STORAGE_ADDWATCH,
+  EXPERIMENTAL_SYSTEMINFO_STORAGE_REMOVEWATCH,
+  EXPERIMENTAL_SYSTEMINFO_STORAGE_GETALLWATCH,
+  EXPERIMENTAL_SYSTEMINFO_STORAGE_REMOVEALLWATCH,
   ENUM_BOUNDARY // Last entry: Add new entries above.
 };
 

chrome/common/extensions/api/experimental_system_info_storage.idl

@@ -31,12 +31,35 @@ namespace experimental.systemInfo.storage {
     double availableCapacity;
   };
 
+  // A dictionary that describes the add particular storage device watch
+  // request results.
+  dictionary AddWatchResult {
+    DOMString id;
+    boolean success;
+  };
+
   callback StorageInfoCallback = void (StorageUnitInfo[] info);
 
+  callback AddWatchCallback = void (AddWatchResult info);
+
+  callback GetAllWatchCallback = void (DOMString[] storageIds);
+
   interface Functions {
     // Get the storage information from the system. The argument passed to the
     // callback is an array of StorageUnitInfo objects.
     static void get(StorageInfoCallback callback);
+
+    // Monitor a particular storage device available change capacity.
+    static void addWatch(DOMString id, AddWatchCallback callback);
+
+    // Remove the monitor of a particular device.
+    static void removeWatch(DOMString id);
+
+    // Get all the watched storage devices.
+    static void getAllWatch(GetAllWatchCallback callback);
+
+    // Remove all the storage devices monitors.
+    static void removeAllWatch();
   };
 
   interface Events {