DevTools: mark execution contexts as isolated worlds

This patch adds the `isIsolatedWorld` bit to the execution context's
aux data.

This is necessary to be able to differentiate between isolated worlds
and other worlds, e.g. worklets.

R=dgozman

Change-Id: I3741b1631f653ffcfaddcba6bf40b229711494dc
Reviewed-on: https://chromium-review.googlesource.com/1173015
Commit-Queue: Andrey Lushnikov <lushnikov@chromium.org>
Reviewed-by: Pavel Feldman <pfeldman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#583153}

third_party/WebKit/LayoutTests/http/tests/inspector-protocol/iframe-no-src-execution-contexts-expected.txt

@@ -6,6 +6,7 @@ Tests that execution contexts are reported for iframes that don't have src attri
             auxData : {
                 frameId : <string>
                 isDefault : true
+                type : default
             }
             id : <number>
             name : 
@@ -21,6 +22,7 @@ Tests that execution contexts are reported for iframes that don't have src attri
             auxData : {
                 frameId : <string>
                 isDefault : true
+                type : default
             }
             id : <number>
             name : 

third_party/WebKit/LayoutTests/http/tests/inspector-protocol/mixed-content-execution-contexts-1-expected.txt

@@ -6,6 +6,7 @@ Tests that execution contexts are reported for frames that were blocked due to m
             auxData : {
                 frameId : <string>
                 isDefault : true
+                type : default
             }
             id : <number>
             name : 
@@ -21,6 +22,7 @@ Tests that execution contexts are reported for frames that were blocked due to m
             auxData : {
                 frameId : <string>
                 isDefault : true
+                type : default
             }
             id : <number>
             name : 

third_party/WebKit/LayoutTests/http/tests/inspector-protocol/mixed-content-execution-contexts-2-expected.txt

@@ -6,6 +6,7 @@ Tests that execution contexts are reported for frames that were blocked due to m
             auxData : {
                 frameId : <string>
                 isDefault : true
+                type : default
             }
             id : <number>
             name : 
@@ -21,6 +22,7 @@ Tests that execution contexts are reported for frames that were blocked due to m
             auxData : {
                 frameId : <string>
                 isDefault : true
+                type : default
             }
             id : <number>
             name : 

third_party/WebKit/LayoutTests/inspector-protocol/page/createIsolatedWorld-expected.txt

@@ -3,4 +3,5 @@ Runtime enabled
 Page enabled
 Main Frame obtained
 PASS - execution context id match.
+PASS - reported as isolated world.
 

third_party/WebKit/LayoutTests/inspector-protocol/page/createIsolatedWorld.js

 (async function(testRunner) {
-  var {page, session, dp} = await testRunner.startBlank('Tests Page.createIsolatedWorld method.');
+  const {page, session, dp} = await testRunner.startBlank('Tests Page.createIsolatedWorld method.');
 
-  var reportedExecutionContextId;
+  let reportedExecutionContextId;
+  let isIsolatedWorld = false;
   dp.Runtime.onExecutionContextCreated(message => {
     if (message.params.context.auxData.frameId !== mainFrameId)
       return;
     if (message.params.context.auxData.isDefault === false &&
         message.params.context.name === 'Test world') {
       reportedExecutionContextId = message.params.context.id;
+      isIsolatedWorld = message.params.context.auxData.type === 'isolated';
     } else {
       testRunner.log('fail - main world created.');
       testRunner.log(JSON.stringify(message.params));
@@ -30,5 +32,9 @@
     testRunner.log('PASS - execution context id match.');
   else
     testRunner.log('fail - execution context id differ.');
+  if (isIsolatedWorld)
+    testRunner.log('PASS - reported as isolated world.');
+  else
+    testRunner.log('fail - reported as non-isolated world.');
   testRunner.completeTest();
 })

third_party/blink/renderer/core/inspector/main_thread_debugger.cc

@@ -140,6 +140,12 @@ void MainThreadDebugger::ContextCreated(ScriptState* script_state,
   StringBuilder aux_data_builder;
   aux_data_builder.Append("{\"isDefault\":");
   aux_data_builder.Append(world.IsMainWorld() ? "true" : "false");
+  if (world.IsMainWorld())
+    aux_data_builder.Append(",\"type\":\"default\"");
+  else if (world.IsIsolatedWorld())
+    aux_data_builder.Append(",\"type\":\"isolated\"");
+  else if (world.IsWorkerWorld())
+    aux_data_builder.Append(",\"type\":\"worker\"");
   aux_data_builder.Append(",\"frameId\":\"");
   aux_data_builder.Append(IdentifiersFactory::FrameId(frame));
   aux_data_builder.Append("\"}");