Fix some coding style issues

atom/browser/native_window.cc

@@ -54,6 +54,7 @@ NativeWindow::NativeWindow(
       enable_larger_than_screen_(false),
       is_closed_(false),
       has_dialog_attached_(false),
+      sheet_offset_(0.0),
       aspect_ratio_(0.0),
       inspectable_web_contents_(inspectable_web_contents),
       weak_factory_(this) {

atom/browser/native_window_mac.mm

@@ -243,13 +243,13 @@ bool ScopedDisableResize::disable_resize_ = false;
   return NO;
 }
 
-- (NSRect)window:(NSWindow *)window willPositionSheet:(NSWindow *)sheet usingRect:(NSRect)rect {
-  NSView * view = window.contentView;
+- (NSRect)window:(NSWindow*)window
+    willPositionSheet:(NSWindow*)sheet usingRect:(NSRect)rect {
+  NSView* view = window.contentView;
   rect.origin.y = view.frame.size.height - shell_->GetSheetOffset();
   return rect;
 }
 
-
 @end
 
 @interface AtomNSWindow : NSWindow {

atom/browser/net/atom_network_delegate.h

@@ -121,6 +121,7 @@ class AtomNetworkDelegate : public brightray::NetworkDelegate {
   std::map<uint64_t, net::CompletionCallback> callbacks_;
 
   base::Lock lock_;
+
   // Client id for devtools network emulation.
   std::string client_id_;
 

docs/api/dialog.md

@@ -122,7 +122,6 @@ it is usually used to report errors in early stage of startup.  If called
 before the app `ready`event on Linux, the message will be emitted to stderr,
 and no GUI dialog will appear.
 
-
 ## Sheets
 
 On Mac OS X, dialogs are presented as sheets attached to a window if you provide