[DevTools] Added Runtime.awaitPromise protocol method

third_party/WebKit/Source/platform/v8_inspector/js_protocol.json

Index: third_party/WebKit/Source/platform/v8_inspector/js_protocol.json
diff --git a/third_party/WebKit/Source/platform/v8_inspector/js_protocol.json b/third_party/WebKit/Source/platform/v8_inspector/js_protocol.json
index 387ef9aca3f4ca11c59f5bb21c2dd6793e43ae36..dc4b6858bd667b778309f1b9893162343b129459 100644
--- a/third_party/WebKit/Source/platform/v8_inspector/js_protocol.json
+++ b/third_party/WebKit/Source/platform/v8_inspector/js_protocol.json
@@ -196,6 +196,20 @@
                 "description": "Evaluates expression on global object."
             },
             {
+                "name": "promiseThen",

[pfeldman, 2016/07/28 21:05:38]

name: awaitPromise.

also... could we get following addition to existing commands (eval, evanOnCall,
callFuncOn):

            {
                "name": "evaluate",
                "parameters": [
                    { "name": "awaitPromise", "type": "boolean", "optional":
true, "hidden": true, "description": "Whether execution should wait for promise
to be resolved." },
                ],
                "returns": [
                    ...
                ],
                "description": "Evaluates expression on global object."
            },

[kozy, 2016/07/28 22:54:09]

awaitPromise - done.

I'm not sure about additional flag.
Protocol client can emulate awaitEvaluate behavior with 10-lines function:
http://pastebin.com/jycgPrCF
I'll add this in separate CL.

+                "hidden": true,
+                "async": true,
+                "parameters": [
+                    { "name": "promiseObjectId", "$ref": "RemoteObjectId", "description": "Identifier of the promise." },
+                    { "name": "returnByValue", "type": "boolean", "optional": true, "description": "Whether the result is expected to be a JSON object that should be sent by value." },
+                    { "name": "generatePreview", "type": "boolean", "optional": true, "hidden": true, "description": "Whether preview should be generated for the result." }
+                ],
+                "returns": [
+                    { "name": "resolvedValue", "$ref": "RemoteObject", "optional": true },

[dgozman, 2016/07/28 00:07:56]

Let's add description telling that either on or the other is present.

[kozy, 2016/07/28 22:54:09]

Done.

+                    { "name": "rejectedValue", "$ref": "RemoteObject", "optional": true }
+                ]
+            },
+            {
                 "name": "callFunctionOn",
                 "parameters": [
                     { "name": "objectId", "$ref": "RemoteObjectId", "description": "Identifier of the object to call function on." },