DevTools: move the GC button into the memory panel.

third_party/WebKit/Source/devtools/front_end/profiler/ProfilesPanel.js

Index: third_party/WebKit/Source/devtools/front_end/profiler/ProfilesPanel.js
diff --git a/third_party/WebKit/Source/devtools/front_end/profiler/ProfilesPanel.js b/third_party/WebKit/Source/devtools/front_end/profiler/ProfilesPanel.js
index 739d9bdbd6af34bfc4154ae4d5c10dcdce485123..d30c0f9054a8fa68232cf5100f2ec63c15272683 100644
--- a/third_party/WebKit/Source/devtools/front_end/profiler/ProfilesPanel.js
+++ b/third_party/WebKit/Source/devtools/front_end/profiler/ProfilesPanel.js
@@ -431,6 +431,9 @@ Profiler.ProfilesPanel = class extends UI.PanelWithSidebar {
     this.clearResultsButton = new UI.ToolbarButton(Common.UIString('Clear all profiles'), 'largeicon-clear');
     this.clearResultsButton.addEventListener('click', this._reset, this);
     toolbar.appendToolbarItem(this.clearResultsButton);
+    toolbar.appendSeparator();
+    toolbar.appendToolbarItem(
+        /** @type {!UI.ToolbarItem} */ (UI.Toolbar.createActionButtonForId('profiler.collect-garbage')));
 
     this._profileTypeToolbar = new UI.Toolbar('', this._toolbarElement);
     this._profileViewToolbar = new UI.Toolbar('', this._toolbarElement);
@@ -1260,3 +1263,21 @@ Profiler.ProfilesPanel.RecordActionDelegate = class {
     return true;
   }
 };
+
+/**
+ * @implements {UI.ActionDelegate}
+ * @unrestricted
+ */
+Profiler.ProfilesPanel.GCActionDelegate = class {
+  /**
+   * @override
+   * @param {!UI.Context} context
+   * @param {string} actionId
+   * @return {boolean}
+   */
+  handleAction(context, actionId) {
+    for (var target of SDK.targetManager.targets())
+      target.heapProfilerAgent().collectGarbage();
+    return true;
+  }
+};