Address review comments from #767

Mostly formating and removing arguments with default values.

examples/fitness/lib/settings.dart

@@ -106,15 +106,18 @@ class SettingsFragment extends StatefulComponent {
               onPressed: () { _handleBackupChanged(!(userData.backupMode == BackupMode.enabled)); },
               child: new Flex([
                 new Flexible(child: new Text('Back up data to the cloud')),
-                new Switch(value: userData.backupMode == BackupMode.enabled, onChanged: _handleBackupChanged)
-              ], direction: FlexDirection.horizontal)
+                new Switch(value: userData.backupMode == BackupMode.enabled, onChanged: _handleBackupChanged),
+              ])
             ),
             new DrawerItem(
               onPressed: () => _handleGoalWeightPressed(),
               child: new Flex([
-                new Text('Goal Weight'),
-                new Text(goalWeightText, style: Theme.of(this).text.caption),
-              ], direction: FlexDirection.vertical, alignItems: FlexAlignItems.start)
+                  new Text('Goal Weight'),
+                  new Text(goalWeightText, style: Theme.of(this).text.caption),
+                ],
+                direction: FlexDirection.vertical,
+                alignItems: FlexAlignItems.start
+              )
             ),
           ])
         )

examples/stocks/lib/stock_home.dart

@@ -126,10 +126,12 @@ class StockHome extends StatefulComponent {
         new DrawerItem(
           icon: 'action/assessment',
           selected: true,
-          child: new Text('Stock List')),
+          child: new Text('Stock List')
+        ),
         new DrawerItem(
           icon: 'action/account_balance',
-          child: new Text('Account Balance')),
+          child: new Text('Account Balance')
+        ),
         new DrawerDivider(),
         new DrawerItem(
           icon: 'action/thumb_up',
@@ -137,14 +139,16 @@ class StockHome extends StatefulComponent {
           child: new Flex([
             new Flexible(child: new Text('Optimistic')),
             new Radio(value: StockMode.optimistic, groupValue: stockMode, onChanged: _handleStockModeChange)
-          ], direction: FlexDirection.horizontal)),
+          ])
+        ),
         new DrawerItem(
           icon: 'action/thumb_down',
           onPressed: () => _handleStockModeChange(StockMode.pessimistic),
           child: new Flex([
             new Flexible(child: new Text('Pessimistic')),
             new Radio(value: StockMode.pessimistic, groupValue: stockMode, onChanged: _handleStockModeChange)
-          ], direction: FlexDirection.horizontal)),
+          ])
+        ),
         new DrawerDivider(),
         new DrawerItem(
           icon: 'action/settings',

examples/stocks/lib/stock_settings.dart

@@ -104,16 +104,16 @@ class StockSettings extends StatefulComponent {
               onPressed: () => _confirmOptimismChange(),
               child: new Flex([
                 new Flexible(child: new Text('Everything is awesome')),
-                new Checkbox(value: optimism == StockMode.optimistic, onChanged: (_) => _confirmOptimismChange())
-              ], direction: FlexDirection.horizontal)
+                new Checkbox(value: optimism == StockMode.optimistic, onChanged: (_) => _confirmOptimismChange()),
+              ])
             ),
             new DrawerItem(
               icon: 'action/backup',
               onPressed: () { _handleBackupChanged(!(backup == BackupMode.enabled)); },
               child: new Flex([
                 new Flexible(child: new Text('Back up stock list to the cloud')),
-                new Switch(value: backup == BackupMode.enabled, onChanged: _handleBackupChanged)
-              ], direction: FlexDirection.horizontal)
+                new Switch(value: backup == BackupMode.enabled, onChanged: _handleBackupChanged),
+              ])
             ),
           ])
         )