Add breakOnLoadStrategy launch config prop

package.json

@@ -266,6 +266,21 @@
                 "type": "boolean",
                 "description": "%chrome.breakOnLoad.description",
                 "default": true
+              },
+              "breakOnLoadStrategy": {
+                "type": "enum",
+                "enum": [
+                  "off",
+                  "instrument",
+                  "regex"
+                ],
+                "enumDescriptions": [
+                  "%chrome.breakOnLoadStrategy.off.description%",
+                  "%chrome.breakOnLoadStrategy.instrument.description%",
+                  "%chrome.breakOnLoadStrategy.regex.description%"
+                ],
+                "description": "%chrome.breakOnLoadStrategy.description",
+                "default": "instrument"
               }
             }
           },

package.nls.json

@@ -25,5 +25,9 @@
 	"chrome.disableNetworkCache.description": "Controls whether to skip the network cache for each request",
 	"chrome.urlFilter.description": "Will search for a page with this url and attach to it, if found. Can have * wildcards.",
 	"chrome.showAsyncStacks.description": "Show the async calls that led to the current call stack",
-	"chrome.breakOnLoad.description": "If true, the debug adapter will pause briefly as each script is loaded, giving it a chance to hit breakpoints at the beginnings of those scripts. Has a perf impact."
+	"chrome.breakOnLoad.description": "If true, the debug adapter will pause briefly as each script is loaded, giving it a chance to hit breakpoints at the beginnings of those scripts. Has a perf impact.",
+	"chrome.breakOnLoadStrategy.description": "The strategy to use for breakOnLoad.",
+	"chrome.breakOnLoadStrategy.off.description": "Disable breakOnLoad",
+	"chrome.breakOnLoadStrategy.instrument.description": "Tell Chrome to pause as each script is loaded, resolving sourcemaps and setting breakpoints",
+	"chrome.breakOnLoadStrategy.regex.description": "Sets breakpoints optimistically in files with the same name as the file in which the breakpoint is set."
 }

src/chromeDebugAdapter.ts

@@ -43,7 +43,7 @@ export class ChromeDebugAdapter extends CoreDebugAdapter {
     }
 
     public launch(args: ILaunchRequestArgs): Promise<void> {
-        if (args.breakOnLoad) {
+        if (args.breakOnLoad && !args.breakOnLoadStrategy) {
             args.breakOnLoadStrategy = 'instrument';
         }
 

test/debugProtocolMocks.ts

@@ -89,7 +89,7 @@ export function getMockChromeConnectionApi(): IMockChromeConnectionAPI {
     mockDebugger.callBase = true;
     mockDebugger
         .setup(x => x.enable())
-        .returns(() => Promise.resolve());
+        .returns(() => Promise.resolve(null));
 
     const mockNetwork = Mock.ofInstance<Crdp.NetworkClient>(<any>getNetworkStubs());
     mockNetwork.callBase = true;