[debugger] Stepping and break-related functions in wrapper

This adds clearStepping plus the family of
{set,clear}BreakOn{,Uncaught}Exception functions.

BUG=v8:5530

Review-Url: https://codereview.chromium.org/2482903002
Cr-Commit-Position: refs/heads/master@{#40834}

test/mjsunit/debug-constructor.js → test/debugger/debug/debug-constructor.js

@@ -25,8 +25,6 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-// Flags: --expose-debug-as debug
-// Get the Debug object exposed from the debug context global object.
 Debug = debug.Debug
 
 // Simple function which collects a simple call graph.

test/mjsunit/es6/debug-promises/reject-after-resolve.js → test/debugger/debug/es6/debug-promises/reject-after-resolve.js

@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --expose-debug-as debug --allow-natives-syntax
 
 // Test debug events when we listen to uncaught exceptions and
 // the Promise is rejected in a chained closure after it has been resolved.

test/mjsunit/harmony/debug-async-function-async-task-event.js → test/debugger/debug/harmony/debug-async-function-async-task-event.js

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-async-await --expose-debug-as debug --allow-natives-syntax
+// Flags: --harmony-async-await
 
 // The test observes the callbacks that async/await makes to the inspector
 // to make accurate stack traces. The pattern is based on saving a stack once

test/mjsunit/regress/regress-crbug-401915.js → test/debugger/debug/regress/regress-crbug-401915.js

@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --allow-natives-syntax --expose-debug-as debug
 
 Debug = debug.Debug;
 Debug.setListener(function() {});

test/debugger/test-api.js

@@ -59,6 +59,10 @@ class DebugWrapper {
                        Module:  8
                      };
 
+    // Types of exceptions that can be broken upon.
+    this.ExceptionBreak = { Caught : 0,
+                            Uncaught: 1 };
+
     // Store the current script id so we can skip corresponding break events.
     this.thisScriptId = %FunctionGetScriptId(receive);
 
@@ -76,6 +80,39 @@ class DebugWrapper {
   stepInto() { this.sendMessageForMethodChecked("Debugger.stepInto"); }
   stepOut() { this.sendMessageForMethodChecked("Debugger.stepOut"); }
 
+  setBreakOnException()  {
+    this.sendMessageForMethodChecked(
+        "Debugger.setPauseOnExceptions", { state : "all" });
+  }
+
+  clearBreakOnException()  {
+    const newState = this.isBreakOnUncaughtException() ? "uncaught" : "none";
+    this.sendMessageForMethodChecked(
+        "Debugger.setPauseOnExceptions", { state : newState });
+  }
+
+  isBreakOnException() {
+    return !!%IsBreakOnException(this.ExceptionBreak.Caught);
+  };
+
+  setBreakOnUncaughtException()  {
+    const newState = this.isBreakOnException() ? "all" : "uncaught";
+    this.sendMessageForMethodChecked(
+        "Debugger.setPauseOnExceptions", { state : newState });
+  }
+
+  clearBreakOnUncaughtException()  {
+    const newState = this.isBreakOnException() ? "all" : "none";
+    this.sendMessageForMethodChecked(
+        "Debugger.setPauseOnExceptions", { state : newState });
+  }
+
+  isBreakOnUncaughtException() {
+    return !!%IsBreakOnException(this.ExceptionBreak.Uncaught);
+  };
+
+  clearStepping() { %ClearStepping(); };
+
   // Returns the resulting breakpoint id.
   setBreakPoint(func, opt_line, opt_column, opt_condition) {
     assertTrue(%IsFunction(func));
@@ -161,8 +198,8 @@ class DebugWrapper {
     send(message);
   }
 
-  sendMessageForMethodChecked(method) {
-    const {msgid, msg} = this.createMessage(method);
+  sendMessageForMethodChecked(method, params) {
+    const {msgid, msg} = this.createMessage(method, params);
     this.sendMessage(msg);
     this.takeReplyChecked(msgid);
   }