[DevTools] Improve context and target naming.

third_party/WebKit/Source/devtools/front_end/sdk/RuntimeModel.js

Index: third_party/WebKit/Source/devtools/front_end/sdk/RuntimeModel.js
diff --git a/third_party/WebKit/Source/devtools/front_end/sdk/RuntimeModel.js b/third_party/WebKit/Source/devtools/front_end/sdk/RuntimeModel.js
index 5e8198c449e17d2b55f7353ccfcccbf5c53ebfe2..65c63ef1c8540bda3bc174d5f71940dbe02ec39e 100644
--- a/third_party/WebKit/Source/devtools/front_end/sdk/RuntimeModel.js
+++ b/third_party/WebKit/Source/devtools/front_end/sdk/RuntimeModel.js
@@ -468,6 +468,8 @@ SDK.ExecutionContext = class extends SDK.SDKObject {
      * @return {number}
      */
     function targetWeight(target) {
+      if (!target.parentTarget())
+        return 4;
       if (target.hasBrowserCapability())
         return 3;
       if (target.hasJSCapability())