Bug 1740292 - [devtools] Stop calling target front attach method. r=nchevobbe

Previous patches made attach method become a no-op, so all these callsites can be removed.

Differential Revision: https://phabricator.services.mozilla.com/D130913

devtools/client/debugger/test/mochitest/browser_dbg-chrome-debugging.js

@@ -14,7 +14,6 @@ add_task(async function() {
 
   const descriptorFront = await client.mainRoot.getMainProcess();
   const front = await descriptorFront.getTarget();
-  await front.attach();
   const threadFront = await front.attachThread();
 
   gBrowser.selectedTab = BrowserTestUtils.addTab(gBrowser, "about:mozilla");

devtools/client/framework/test/browser_target_server_compartment.js

@@ -106,7 +106,6 @@ async function testMainProcess() {
 
   const targetDescriptor = await client.mainRoot.getMainProcess();
   const target = await targetDescriptor.getTarget();
-  await target.attach();
 
   const threadFront = await target.attachThread();
   const { sources } = await threadFront.getSources();

devtools/client/framework/test/browser_target_support.js

@@ -4,8 +4,6 @@
 // Test support methods on Target, such as `hasActor` and `getTrait`.
 
 async function testTarget(client, target) {
-  await target.attach();
-
   is(
     target.hasActor("inspector"),
     true,

devtools/client/framework/test/browser_two_tabs.js

@@ -86,7 +86,6 @@ async function checkGetTabFailures(client) {
 
 async function checkSelectedTargetActor(targetFront2) {
   // Send a naive request to the second target actor to check if it works
-  await targetFront2.attach();
   const consoleFront = await targetFront2.getFront("console");
   const response = await consoleFront.startListeners([]);
   ok(
@@ -97,7 +96,6 @@ async function checkSelectedTargetActor(targetFront2) {
 
 async function checkFirstTargetActor(targetFront1) {
   // then send a request to the first target actor to check if it still works
-  await targetFront1.attach();
   const consoleFront = await targetFront1.getFront("console");
   const response = await consoleFront.startListeners([]);
   ok(

devtools/client/fronts/descriptors/process.js

@@ -107,7 +107,6 @@ class ProcessDescriptorFront extends DescriptorMixin(
       try {
         const targetForm = await super.getTarget();
         targetFront = await this._createProcessTargetFront(targetForm);
-        await targetFront.attach();
       } catch (e) {
         // This is likely to happen if we get a lot of events which drop previous
         // processes.

devtools/client/fronts/descriptors/tab.js

@@ -280,7 +280,6 @@ class TabDescriptorFront extends DescriptorMixin(
       try {
         const targetForm = await super.getTarget();
         newTargetFront = this._createTabTarget(targetForm);
-        await newTargetFront.attach();
         this.setTarget(newTargetFront);
       } catch (e) {
         console.log(

devtools/client/fronts/descriptors/webextension.js

@@ -145,7 +145,6 @@ class WebExtensionDescriptorFront extends DescriptorMixin(
       try {
         const targetForm = await super.getTarget();
         targetFront = this._createWebExtensionTarget(targetForm);
-        await targetFront.attach();
       } catch (e) {
         console.log(
           `Request to connect to WebExtensionDescriptor "${this.id}" failed: ${e}`

devtools/client/responsive/ui.js

@@ -755,9 +755,6 @@ class ResponsiveUI {
     // enterResponsiveMode whenever there is a target switch.
     this.tab.linkedBrowser.enterResponsiveMode();
 
-    // Attach current target to the selected browser tab.
-    await this.currentTarget.attach();
-
     // If the target follows the window global lifecycle, the configuration was already
     // restored from the server during target switch, so we can stop here.
     // This function is still called at startup to restore potential state from previous

devtools/client/shared/test/shared-head.js

@@ -875,7 +875,6 @@ async function createAndAttachTargetForTab(tab) {
   await commands.targetCommand.startListening();
 
   const target = commands.targetCommand.targetFront;
-  await target.attach();
   return target;
 }
 

devtools/docs/contributor/backend/client-api.md

@@ -77,13 +77,8 @@ function attachToTab() {
     // Find the active tab.
     let targetFront = tabs.find(tab => tab.selected);
 
-    // Attach to the tab.
-    targetFront.attach().then(() => {
-      // Now the targetFront is ready and can be used.
-
-      // Attach listeners for client events.
-      targetFront.on("tabNavigated", onTab);
-    });
+    // Attach listeners for client events.
+    targetFront.on("tabNavigated", onTab);
   });
 }
 ```
@@ -169,8 +164,6 @@ async function debugTab() {
   const tabs = await client.mainRoot.listTabs();
   // Find the active tab.
   let targetFront = tabs.find(tab => tab.selected);
-  // Attach to the tab.
-  await targetFront.attach();
   // Attach to the thread (context).
   const threadFront = await targetFront.attachThread();
   // Attach listeners for thread events.

devtools/server/tests/xpcshell/head_dbg.js

@@ -811,7 +811,6 @@ async function setupTestFromUrl(url) {
   const tabs = await listTabs(devToolsClient);
   const descriptorFront = findTab(tabs, "test");
   const targetFront = await descriptorFront.getTarget();
-  await targetFront.attach();
 
   const threadFront = await attachThread(targetFront);
 

devtools/shared/commands/commands-factory.js

@@ -158,8 +158,8 @@ exports.CommandsFactory = {
     // Hack something in order to help TargetMixinFront to distinguish the BrowserConsole
     descriptor.createdForBrowserConsole = true;
 
-    const target = await descriptor.getTarget();
-    await target.attach();
+    // Force fetching the first top level target right away.
+    await descriptor.getTarget();
 
     const commands = await createCommandsDictionary(descriptor);
     return commands;

devtools/shared/commands/resource/tests/browser_resources_thread_states.js

@@ -43,10 +43,6 @@ async function checkBreakpointBeforeWatchResources() {
     tab
   );
 
-  // Attach the thread actor before running the debugger statement,
-  // so that it is correctly catched by the thread actor.
-  info("Attach the top level target");
-  await targetCommand.targetFront.attach();
   // Init the Thread actor via attachAndInitThread in order to ensure
   // memoizing the thread front and avoid attaching it twice
   info("Attach the top level thread actor");
@@ -348,9 +344,6 @@ async function checkSetBeforeWatch() {
     tab
   );
 
-  // Attach the target in order to create the thread actor
-  info("Attach the top level target");
-  await targetCommand.targetFront.attach();
   // Instantiate the thread front in order to be able to set a breakpoint before watching for thread state
   info("Attach the top level thread actor");
   await targetCommand.targetFront.attachAndInitThread(targetCommand);

devtools/shared/webconsole/test/chrome/common.js

@@ -75,8 +75,6 @@ var _attachConsole = async function(listeners, attachToTab, attachToWorker) {
         worker = new Worker(workerName);
         await waitForMessage(worker);
 
-        // listWorkers only works if the browsing context target actor is attached
-        await target.attach();
         const { workers } = await target.listWorkers();
         target = workers.filter(w => w.url == workerName)[0];
         if (!target) {
@@ -85,11 +83,13 @@ var _attachConsole = async function(listeners, attachToTab, attachToWorker) {
           );
           return null;
         }
+        // This is still important to attach workers as target is still a descriptor front
+        // which "becomes" a target when calling its attach method.
+        await target.attach();
       }
     }
 
     // Attach the Target and the target thread in order to instantiate the console client.
-    await target.attach();
     await target.attachThread();
 
     const webConsoleFront = await target.getFront("console");