Improve widget selection in the inspector (Related ticket: flutter#3489)

Author: msavela

packages/devtools_app/lib/src/common_widgets.dart

@@ -113,6 +113,7 @@ class IconLabelButton extends StatelessWidget {
     this.elevatedButton = false,
     this.tooltip,
     this.tooltipPadding,
+    this.outlined = true,
   })  : assert((icon == null) != (imageIcon == null)),
         super(key: key);
 
@@ -135,6 +136,8 @@ class IconLabelButton extends StatelessWidget {
 
   final EdgeInsetsGeometry tooltipPadding;
 
+  final bool outlined;
+
   @override
   Widget build(BuildContext context) {
     final iconLabel = MaterialIconLabel(
@@ -164,12 +167,17 @@ class IconLabelButton extends StatelessWidget {
         width: !includeText(context, minScreenWidthForTextBeforeScaling)
             ? buttonMinWidth
             : null,
-        child: OutlinedButton(
-          style: denseAwareOutlinedButtonStyle(
-              context, minScreenWidthForTextBeforeScaling),
-          onPressed: onPressed,
-          child: iconLabel,
-        ),
+        child: outlined
+            ? OutlinedButton(
+                style: denseAwareOutlinedButtonStyle(
+                    context, minScreenWidthForTextBeforeScaling),
+                onPressed: onPressed,
+                child: iconLabel,
+              )
+            : TextButton(
+                onPressed: onPressed,
+                child: iconLabel,
+              ),
       ),
     );
   }

packages/devtools_app/lib/src/inspector/diagnostics.dart

@@ -35,6 +35,7 @@ class DiagnosticsNodeDescription extends StatelessWidget {
   const DiagnosticsNodeDescription(
     this.diagnostic, {
     this.isSelected,
+    this.hasSearchMatch,
     this.errorText,
     this.multiline = false,
     this.style,
@@ -43,6 +44,7 @@ class DiagnosticsNodeDescription extends StatelessWidget {
 
   final RemoteDiagnosticsNode diagnostic;
   final bool isSelected;
+  final bool hasSearchMatch;
   final String errorText;
   final bool multiline;
   final TextStyle style;