DevTools: render category filters in a way that they don't clash.

Source/devtools/front_end/ui/filter.css

Index: Source/devtools/front_end/ui/filter.css
diff --git a/Source/devtools/front_end/ui/filter.css b/Source/devtools/front_end/ui/filter.css
index 69d24a11bb703fecd1e9735a236b890e18d7dde2..fe49efdb5de3d6c2ac90613f37b11aeed62a4c14 100644
--- a/Source/devtools/front_end/ui/filter.css
+++ b/Source/devtools/front_end/ui/filter.css
@@ -29,19 +29,18 @@
  */
 
 .filter-bar {
-    align-items: center;
+    background-color: #eee;
+    padding: 4px 0 2px 0;
 }
 
 .filter-text-filter {
-    display: flex;
+    display: inline-flex;
     margin-left: 1px;
     margin-right: 2px;
-    flex: 0 1 120px;
     min-width: 40px;
-}
-
-.filter-text-filter.supports-regex {
-    flex: 0 0 155px;
+    max-width: 200px;
+    height: 24px;
+    align-items: center;
 }
 
 .filter-text-filter label {
@@ -49,15 +48,19 @@
 }
 
 .filter-bitset-filter {
-    padding: 0 10px !important;
+    padding: 2px;
+    display: inline-flex;
     overflow: hidden;
-    display: flex !important;
+    height: 24px;
+    position: relative;
+    top: -1px;
 }
 
 .filter-bitset-filter li {
     display: inline-block;
+    flex: none;
     margin: auto 2px;
-    padding: 4px 6px 3px 6px;
+    padding: 3px 6px 3px 3px;
     background: transparent;
     text-shadow: rgba(255, 255, 255, 0.5) 0 1px 0;
     border-radius: 8px;
@@ -95,6 +98,7 @@
     margin-left: 5px;
     margin-right: 2px;
     flex: 0 0 auto;
+    display: inline-block;
 }
 
 .filter-checkbox-filter {
@@ -103,7 +107,11 @@
     white-space: nowrap;
     text-overflow: ellipsis;
     overflow: hidden;
-    display: flex;
+    display: inline-flex;
+    vertical-align: middle;
+    height: 24px;
+    position: relative;
+    top: -2px;
 }
 
 .filter-checkbox-filter > label {
@@ -128,21 +136,6 @@
     flex-shrink: 0;
 }
 
-
-.filter-checkbox-filter .checkbox-filter-checkbox-check {
-    -webkit-appearance: none;
-    width: 11px;
-    height: 11px;
-    margin-top: -2px;
-    margin-left: 1px;
-}
-
-.filter-checkbox-filter .checkbox-filter-checkbox-checked {
-    background-image: url(Images/toolbarButtonGlyphs.png);
-    background-size: 352px 144px;
-    background-position: -129px -110px;
-}
-
 .filter-input-field {
     -webkit-appearance: none;
     border: 1px solid rgb(163, 163, 163);