[DevTools] Removed wasThrown from evaluate-like protocol methods

third_party/WebKit/LayoutTests/inspector-protocol/runtime/runtime-await-promise-expected.txt

 CONSOLE ERROR: line 1: Uncaught (in promise) #<Object>
 CONSOLE ERROR: Uncaught (in promise) #<Object>
 CONSOLE ERROR: Uncaught (in promise) 239
 Tests that Runtime.awaitPromise works.
 
 Running test: testResolvedPromise
 {
     result : {
         description : 239
         type : number
@@ skipping 12 matching lines @@
             ]
         }
         text : Promise was rejected
     }
     result : {
         type : object
         value : {
             a : 1
         }
     }
-    wasThrown : true
 }
 
 Running test: testRejectedPromiseWithStack
 {
     exceptionDetails : {
         columnNumber : 0
         lineNumber : 0
         scriptId : 
         stackTrace : {
             callFrames : [
@@ skipping 18 matching lines @@
                 description : Promise.reject
             }
         }
         text : Promise was rejected
     }
     result : {
         description : 239
         type : number
         value : 239
     }
-    wasThrown : true
 }
 
 Running test: testPendingPromise
 {
     result : {
         description : 239
         type : number
         value : 239
     }
 }
 
 Running test: testResolvedWithoutArgsPromise
 {
     result : {
         type : undefined
     }
 }
 
 Running test: testGarbageCollectedPromise
 {
     code : -32000
     message : Promise was collected
 }