Increase minimum slider size

Change-Id: I96e5848dd12f79ab0c43d31d6329133c89abdc46
diff --git a/tools/winscope/src/app/components/timeline/mini-timeline/slider_component.ts b/tools/winscope/src/app/components/timeline/mini-timeline/slider_component.ts
index 1a2130e..e2b3da1 100644
--- a/tools/winscope/src/app/components/timeline/mini-timeline/slider_component.ts
+++ b/tools/winscope/src/app/components/timeline/mini-timeline/slider_component.ts
@@ -185,13 +185,12 @@
   }
 
   computeSliderWidth() {
-    const minSliderWidth = 15;
     const transformer = this.getTransformer();
     let width =
       transformer.transform(assertDefined(this.zoomRange).to) -
       transformer.transform(assertDefined(this.zoomRange).from);
-    if (width < minSliderWidth) {
-      width = minSliderWidth;
+    if (width < MIN_SLIDER_WIDTH) {
+      width = MIN_SLIDER_WIDTH;
     }
 
     return width;
@@ -291,3 +290,5 @@
     addEventListener('mouseup', mouseUpListener);
   }
 }
+
+export const MIN_SLIDER_WIDTH = 50;
diff --git a/tools/winscope/src/app/components/timeline/mini-timeline/slider_component_test.ts b/tools/winscope/src/app/components/timeline/mini-timeline/slider_component_test.ts
index 758609d..4c5d288 100644
--- a/tools/winscope/src/app/components/timeline/mini-timeline/slider_component_test.ts
+++ b/tools/winscope/src/app/components/timeline/mini-timeline/slider_component_test.ts
@@ -30,7 +30,7 @@
 import {dragElement} from 'test/utils';
 import {RealTimestamp} from 'trace/timestamp';
 import {TracePosition} from 'trace/trace_position';
-import {SliderComponent} from './slider_component';
+import {MIN_SLIDER_WIDTH, SliderComponent} from './slider_component';
 
 describe('SliderComponent', () => {
   let fixture: ComponentFixture<SliderComponent>;
@@ -116,11 +116,9 @@
     });
     fixture.detectChanges();
 
-    const minWidth = 15;
-
     const sliderWidth = component.sliderBox.nativeElement.offsetWidth;
-    expect(component.sliderWidth).toBe(minWidth);
-    expect(component.dragPosition.x).toBe(sliderWidth / 4 - minWidth / 2);
+    expect(component.sliderWidth).toBe(MIN_SLIDER_WIDTH);
+    expect(component.dragPosition.x).toBe(sliderWidth / 4 - MIN_SLIDER_WIDTH / 2);
   });
 
   it('repositions slider on resize', () => {