Add support for time based deletion of browsing data on iOS

ios/chrome/browser/ui/commands/clear_browsing_data_command.mm

Index: ios/chrome/browser/ui/commands/clear_browsing_data_command.mm
diff --git a/ios/chrome/browser/ui/commands/clear_browsing_data_command.mm b/ios/chrome/browser/ui/commands/clear_browsing_data_command.mm
index 647df9e9b28caccef5cd05c8310c2457f93ccd91..8a4eae71e3e1da3d46401d82003474db4a79c267 100644
--- a/ios/chrome/browser/ui/commands/clear_browsing_data_command.mm
+++ b/ios/chrome/browser/ui/commands/clear_browsing_data_command.mm
@@ -11,6 +11,7 @@
 
 @synthesize browserState = _browserState;
 @synthesize mask = _mask;
+@synthesize timePeriod = _timePeriod;
 
 - (instancetype)initWithTag:(NSInteger)tag {
   NOTREACHED();
@@ -18,6 +19,19 @@
 }
 
 - (instancetype)initWithBrowserState:(ios::ChromeBrowserState*)browserState
+                                mask:(int)mask
+                          timePeriod:(browsing_data::TimePeriod)timePeriod {
+  self = [super initWithTag:IDC_CLEAR_BROWSING_DATA_IOS];
+  if (self) {
+    DCHECK(browserState);
+    _browserState = browserState;
+    _mask = mask;
+    _timePeriod = timePeriod;
+  }
+  return self;
+}
+
+- (instancetype)initWithBrowserState:(ios::ChromeBrowserState*)browserState

[msramek, 2016/08/29 14:20:59]

Shouldn't we explicitly initialize _timePeriod to all time here?

[ioanap, 2016/08/30 11:32:08]

Done.

                                 mask:(int)mask {
   self = [super initWithTag:IDC_CLEAR_BROWSING_DATA_IOS];
   if (self) {