Removing Page.WaitToLoad and update all pagesets to use explicit wait actions

tools/perf/page_sets/top_25.json

Index: tools/perf/page_sets/top_25.json
diff --git a/tools/perf/page_sets/top_25.json b/tools/perf/page_sets/top_25.json
index 3f47fa6f30f6c683352449023e19a7a2ee6eea94..619ff779307854d0a3f713024bb62d54a2ab376a 100644
--- a/tools/perf/page_sets/top_25.json
+++ b/tools/perf/page_sets/top_25.json
@@ -8,148 +8,109 @@
     {
       "url": "https://www.google.com/#hl=en&q=barack+obama",
       "why": "top google property; a google tab is often open",
-      "wait_for_element_with_text": "Next",
+      "navigate_steps" : [
+        { "action": "navigate" },
+        { "action": "wait", "condition": "element", "text": "Next" }
+      ],
       "stress_memory": [
         { "action": "scroll" },
-        {
-          "action": "click_element",
-          "text": "Next",
-          "wait_for_href_change": true,
-          "wait_for_element_with_text": "Next"
-        },
+        { "action": "click_element", "text": "Next" },
+        { "action": "wait", "condition": "href_change" },
+        { "action": "wait", "condition": "element", "text": "Next" },
         { "action": "scroll" },
-        {
-          "action": "click_element",
-          "text": "Next",
-          "wait_for_href_change": true,
-          "wait_for_element_with_text": "Next"
-        },
+        { "action": "click_element", "text": "Next" },
+        { "action": "wait", "condition": "href_change" },
+        { "action": "wait", "condition": "element", "text": "Next" },
         { "action": "scroll" },
-        {
-          "action": "click_element",
-          "text": "Next",
-          "wait_for_href_change": true,
-          "wait_for_element_with_text": "Previous"
-        },
+        { "action": "click_element", "text": "Next" },
+        { "action": "wait", "condition": "href_change" },
+        { "action": "wait", "condition": "element", "text": "Previous" },
         { "action": "scroll" },
-        {
-          "action": "click_element",
-          "text": "Previous",
-          "wait_for_href_change": true,
-          "wait_for_element_with_text": "Previous"
-        },
+        { "action": "click_element", "text": "Previous" },
+        { "action": "wait", "condition": "href_change" },
+        { "action": "wait", "condition": "element", "text": "Previous" },
         { "action": "scroll" },
-        {
-          "action": "click_element",
-          "text": "Previous",
-          "wait_for_href_change": true,
-          "wait_for_element_with_text": "Previous"
-        },
+        { "action": "click_element", "text": "Previous" },
+        { "action": "wait", "condition": "href_change" },
+        { "action": "wait", "condition": "element", "text": "Previous" },
         { "action": "scroll" },
-        {
-          "action": "click_element",
-          "text": "Previous",
-          "wait_for_href_change": true,
-          "wait_for_element_with_text": "Images"
-        },
+        { "action": "click_element", "text": "Previous" },
+        { "action": "wait", "condition": "href_change" },
+        { "action": "wait", "condition": "element", "text": "Images" },
         { "action": "scroll" },
-        {
-          "action": "click_element",
-          "text": "Images",
-          "wait_for_href_change": true,
-          "wait_for_element_with_text": "Images"
-        }
+        { "action": "click_element", "text": "Images" },
+        { "action": "wait", "condition": "href_change" },
+        { "action": "wait", "condition": "element", "text": "Images" }
       ]
     },
     {
       "url": "https://mail.google.com/mail/",
       "why": "productivity, top google properties",
       "credentials": "google",
-      "wait_for_javascript_expression": "window.gmonkey !== undefined && document.getElementById('gb') !== null",
+      "navigate_steps" : [
+        { "action": "navigate" },
+        { "action": "wait", "javascript": "window.gmonkey !== undefined && document.getElementById('gb') !== null" }
+      ],
       "smoothness": {
         "action": "scroll",
         "scrollable_element_function": "function(callback) { gmonkey.load('2.0', function(api) { callback(api.getScrollableElement()); }); }"
       },
       "stress_memory": [
-        {
-          "action": "click_element",
-          "selector": "a[href=\"https://mail.google.com/mail/u/0/?shva=1#starred\"]",
-          "wait_for_href_change": true
-        },
-        {
-          "action": "click_element",
-          "selector": "a[href=\"https://mail.google.com/mail/u/0/?shva=1#inbox\"]",
-          "wait_for_href_change": true
-        }
+        { "action": "click_element", "selector": "a[href=\"https://mail.google.com/mail/u/0/?shva=1#starred\"]" },
+        { "action": "wait", "condition": "href_change" },
+        { "action": "click_element", "selector": "a[href=\"https://mail.google.com/mail/u/0/?shva=1#inbox\"]" },
+        { "action": "wait", "condition": "href_change" }
       ]
     },
     {
       "url": "https://www.google.com/calendar/",
       "why": "productivity, top google properties",
       "credentials": "google",
-      "wait_for_element_with_selector": "div[class~=\"navForward\"]",
-      "post_navigate_javascript_to_execute": "(function() { var elem = document.createElement('meta');elem.name='viewport';elem.content='initial-scale=1';document.body.appendChild(elem); })();",
-      "wait_seconds": 2,
+      "navigate_steps" : [
+        { "action": "navigate" },
+        { "action": "wait", "seconds":  2 },
+        { "action": "wait", "condition": "element", "selector":  "div[class~=\"navForward\"]" },
+        { "action": "javascript", "expression": "(function() { var elem = document.createElement('meta');elem.name='viewport';elem.content='initial-scale=1';document.body.appendChild(elem); })();" }
+      ],
       "smoothness": {
         "action": "scroll",
         "scrollable_element_function": "function(callback) { callback(document.getElementById('scrolltimedeventswk')); }"
       },
       "stress_memory": [
-        {
-          "action": "click_element",
-          "selector": "div[class~=\"navForward\"]",
-          "wait_for_seconds": 2,
-          "wait_for_element_with_selector": "div[class~=\"navForward\"]"
-        },
-        {
-          "action": "click_element",
-          "selector": "div[class~=\"navForward\"]",
-          "wait_for_seconds": 2,
-          "wait_for_element_with_selector": "div[class~=\"navForward\"]"
-        },
-        {
-          "action": "click_element",
-          "selector": "div[class~=\"navForward\"]",
-          "wait_for_seconds": 2,
-          "wait_for_element_with_selector": "div[class~=\"navForward\"]"
-        },
-        {
-          "action": "click_element",
-          "selector": "div[class~=\"navForward\"]",
-          "wait_for_seconds": 2,
-          "wait_for_element_with_selector": "div[class~=\"navBack\"]"
-        },
-        {
-          "action": "click_element",
-          "selector": "div[class~=\"navBack\"]",
-          "wait_for_seconds": 2,
-          "wait_for_element_with_selector": "div[class~=\"navBack\"]"
-        },
-        {
-          "action": "click_element",
-          "selector": "div[class~=\"navBack\"]",
-          "wait_for_seconds": 2,
-          "wait_for_element_with_selector": "div[class~=\"navBack\"]"
-        },
-        {
-          "action": "click_element",
-          "selector": "div[class~=\"navBack\"]",
-          "wait_for_seconds": 2,
-          "wait_for_element_with_selector": "div[class~=\"navBack\"]"
-        },
-        {
-          "action": "click_element",
-          "selector": "div[class~=\"navBack\"]",
-          "wait_for_seconds": 2,
-          "wait_for_element_with_selector": "div[class~=\"navBack\"]"
-        }
+        { "action": "click_element", "selector": "div[class~=\"navForward\"]" },
+        { "action": "wait", "seconds": 2 },
+        { "action": "wait", "condition": "element", "selector": "div[class~=\"navForward\"]" },
+        { "action": "click_element", "selector": "div[class~=\"navForward\"]" },
+        { "action": "wait", "seconds": 2 },
+        { "action": "wait", "condition": "element", "selector": "div[class~=\"navForward\"]" },
+        { "action": "click_element", "selector": "div[class~=\"navForward\"]" },
+        { "action": "wait", "seconds": 2 },
+        { "action": "wait", "condition": "element", "selector": "div[class~=\"navForward\"]" },
+        { "action": "click_element", "selector": "div[class~=\"navForward\"]" },
+        { "action": "wait", "seconds": 2 },
+        { "action": "wait", "condition": "element", "selector": "div[class~=\"navBack\"]" },
+        { "action": "click_element", "selector": "div[class~=\"navBack\"]" },
+        { "action": "wait", "seconds": 2 },
+        { "action": "wait", "condition": "element", "selector": "div[class~=\"navBack\"]" },
+        { "action": "click_element", "selector": "div[class~=\"navBack\"]" },
+        { "action": "wait", "seconds": 2 },
+        { "action": "wait", "condition": "element", "selector": "div[class~=\"navBack\"]" },
+        { "action": "click_element", "selector": "div[class~=\"navBack\"]" },
+        { "action": "wait", "seconds": 2 },
+        { "action": "wait", "condition": "element", "selector": "div[class~=\"navBack\"]" },
+        { "action": "click_element", "selector": "div[class~=\"navBack\"]" },
+        { "action": "wait", "seconds": 2 },
+        { "action": "wait", "condition": "element", "selector": "div[class~=\"navBack\"]" }
       ]
     },
     {
       "url": "https://drive.google.com",
       "why": "productivity, top google properties",
       "credentials": "google",
-      "wait_for_javascript_expression": "document.getElementsByClassName('doclistview-list').length",
+      "navigate_steps" : [
+        { "action": "navigate" },
+        { "action": "wait", "javascript": "document.getElementsByClassName('doclistview-list').length" }
+      ],
       "smoothness": {
         "action": "scroll",
         "scrollable_element_function": "function(callback) { callback(document.getElementsByClassName('doclistview-list')[0]); }"
@@ -160,8 +121,11 @@
       "url": "https://docs.google.com/document/d/1X-IKNjtEnx-WW5JIKRLsyhz5sbsat3mfTpAPUSX3_s4/view",
       "why": "productivity, top google properties; Sample doc in the link",
       "credentials": "google",
-      "wait_for_javascript_expression": "document.getElementsByClassName('kix-appview-editor').length",
-      "wait_seconds": 2,
+      "navigate_steps" : [
+        { "action": "navigate" },
+        { "action": "wait", "seconds": 2 },
+        { "action": "wait", "javascript": "document.getElementsByClassName('kix-appview-editor').length" }
+      ],
       "smoothness": {
         "action": "scroll",
         "scrollable_element_function": "function(callback) { callback(document.getElementsByClassName('kix-appview-editor')[0]); }"
@@ -171,112 +135,88 @@
       "url": "https://plus.google.com/110031535020051778989/posts",
       "why": "social; top google property; Public profile; infinite scrolls",
       "credentials": "google",
-      "wait_for_element_with_text": "Home",
+      "navigate_steps" : [
+        { "action": "navigate" },
+        { "action": "wait", "condition": "element", "text": "Home" }
+      ],
       "smoothness": {
         "action": "scroll",
         "scroll_is_infinite": true
       },
       "stress_memory": [
-        {
-          "action": "click_element",
-          "text": "Home",
-          "wait_seconds": 2,
-          "wait_for_element_with_text": "Profile"
-        },
-        {
-          "action": "click_element",
-          "text": "Profile",
-          "wait_seconds": 2,
-          "wait_for_element_with_text": "Explore"
-        },
-        {
-          "action": "click_element",
-          "text": "Explore",
-          "wait_seconds": 2,
-          "wait_for_element_with_text": "Events"
-        },
-        {
-          "action": "click_element",
-          "text": "Events",
-          "wait_seconds": 2,
-          "wait_for_element_with_text": "Communities"
-        },
-        {
-          "action": "click_element",
-          "text": "Communities",
-          "wait_seconds": 2,
-          "wait_for_element_with_text": "Home"
-        }
+        { "action": "click_element", "text": "Home" },
+        { "action": "wait", "seconds": 2 },
+        { "action": "wait", "condition": "element", "text": "Profile" },
+        { "action": "click_element", "text": "Profile" },
+        { "action": "wait", "seconds": 2 },
+        { "action": "wait", "condition": "element", "text": "Explore" },
+        { "action": "click_element", "text": "Explore" },
+        { "action": "wait", "seconds": 2 },
+        { "action": "wait", "condition": "element", "text": "Events" },
+        { "action": "click_element", "text": "Events" },
+        { "action": "wait", "seconds": 2 },
+        { "action": "wait", "condition": "element", "text": "Communities" },
+        { "action": "click_element", "text": "Communities" },
+        { "action": "wait", "seconds": 2 },
+        { "action": "wait", "condition": "element", "text": "Home" }
       ]
     },
     {
       "url": "http://www.youtube.com",
       "why": "#3 (Alexa global)",
-      "wait_seconds": 2,
+      "navigate_steps" : [
+        { "action": "navigate" },
+        { "action": "wait", "seconds": 2 }
+      ],
       "credentials": "google"
     },
     {
       "name": "Blogger",
       "url": "http://googlewebmastercentral.blogspot.com/",
       "why": "#11 (Alexa global), google property; some blogger layouts have infinite scroll but more interesting",
-      "wait_for_element_with_text": "accessibility",
+      "navigate_steps" : [
+        { "action": "navigate" },
+        { "action": "wait", "condition": "element", "text": "accessibility" }
+      ],
       "stress_memory": [
-        {
-          "action": "click_element",
-          "text": "accessibility",
-          "wait_for_navigate": true,
-          "wait_for_element_with_text": "advanced"
-        },
+        { "action": "click_element", "text": "accessibility" },
+        { "action": "wait", "condition": "navigate" },
+        { "action": "wait", "condition": "element", "text": "advanced" },
         { "action": "scroll" },
-        {
-          "action": "click_element",
-          "text": "advanced",
-          "wait_for_navigate": true,
-          "wait_for_element_with_text": "beginner"
-        },
+        { "action": "click_element", "text": "advanced" },
+        { "action": "wait", "condition": "navigate" },
+        { "action": "wait", "condition": "element", "text": "beginner" },
         { "action": "scroll" },
-        {
-          "action": "click_element",
-          "text": "beginner",
-          "wait_for_navigate": true,
-          "wait_for_element_with_text": "Home"
-        },
+        { "action": "click_element", "text": "beginner" },
+        { "action": "wait", "condition": "navigate" },
+        { "action": "wait", "condition": "element", "text": "Home" },
         { "action": "scroll" },
-        {
-          "action": "click_element",
-          "text": "Home",
-          "wait_for_navigate": true,
-          "wait_for_element_with_text": "Home"
-        }
+        { "action": "click_element", "text": "Home" },
+        { "action": "wait", "condition": "navigate" },
+        { "action": "wait", "condition": "element", "text": "Home" }
       ]
     },
     {
       "name": "Wordpress",
       "url": "http://en.blog.wordpress.com/2012/09/04/freshly-pressed-editors-picks-for-august-2012/",
       "why": "#18 (Alexa global), Picked an interesting post",
-      "wait_for_element_with_selector": "a[href=\"http://en.blog.wordpress.com/2012/08/30/new-themes-able-and-sight/\"]",
+      "navigate_steps" : [
+        { "action": "navigate" },
+        { "action": "wait", "condition": "element", "selector": "a[href=\"http://en.blog.wordpress.com/2012/08/30/new-themes-able-and-sight/\"]" }
+      ],
       "stress_memory": [
         { "action": "scroll" },
-        {
-          "action": "click_element",
-          "selector": "a[href=\"http://en.blog.wordpress.com/2012/08/30/new-themes-able-and-sight/\"]",
-          "wait_for_navigate": true,
-          "wait_for_element_with_text": "Features"
-        },
+        { "action": "click_element", "selector": "a[href=\"http://en.blog.wordpress.com/2012/08/30/new-themes-able-and-sight/\"]" },
+        { "action": "wait", "condition": "navigate" },
+        { "action": "wait", "condition": "element", "text":  "Features" },
         { "action": "scroll" },
-        {
-          "action": "click_element",
-          "text": "Features",
-          "wait_for_navigate": true,
-          "wait_for_element_with_text": "News"
-        },
+        { "action": "click_element", "text": "Features" },
+        { "action": "wait", "condition": "navigate" },
+        { "action": "wait", "condition": "element", "text":  "News" },
         { "action": "scroll" },
-        {
-          "action": "click_element",
-          "text": "News",
-          "wait_for_navigate": true,
-          "wait_for_element_with_text": "News"
-        },
+        { "action": "click_element", "text": "News" },
+        { "action": "wait", "condition": "navigate" },
+        { "action": "wait", "condition": "element", "text": "News" },
         { "action": "scroll" }
       ]
     },
@@ -285,48 +225,33 @@
       "url": "http://www.facebook.com/barackobama",
       "why": "top social,Public profile",
       "credentials": "facebook",
-      "wait_for_element_with_text": "About",
+      "navigate_steps" : [
+        { "action": "navigate" },
+        { "action": "wait", "condition": "element", "text": "About" }
+      ],
       "smoothness": {
         "action": "scroll",
         "scroll_is_infinite": true
       },
       "stress_memory": [
-        {
-          "action": "click_element",
-          "text": "About",
-          "wait_for_navigate": true,
-          "wait_for_element_with_text": "The Audacity of Hope"
-        },
-        {
-          "action": "click_element",
-          "text": "The Audacity of Hope",
-          "wait_for_navigate": true,
-          "wait_for_element_with_text": "Back to Barack Obama's Timeline"
-        },
-        {
-          "action": "click_element",
-          "text": "Back to Barack Obama's Timeline",
-          "wait_for_navigate": true,
-          "wait_for_element_with_text": "About"
-        },
-        {
-          "action": "click_element",
-          "text": "About",
-          "wait_for_navigate": true,
-          "wait_for_element_with_text": "Elected to U.S. Senate"
-        },
-        {
-          "action": "click_element",
-          "text": "Elected to U.S. Senate",
-          "wait_for_navigate": true,
-          "wait_for_element_with_text": "Home"
-        },
-        {
-          "action": "click_element",
-          "text": "Home",
-          "wait_for_navigate": true,
-          "wait_for_element_with_text": "Home"
-        }
+        { "action": "click_element", "text": "About" },
+        { "action": "wait", "condition": "navigate" },
+        { "action": "wait", "condition": "element", "text": "The Audacity of Hope" },
+        { "action": "click_element", "text": "The Audacity of Hope" },
+        { "action": "wait", "condition": "navigate" },
+        { "action": "wait", "condition": "element", "text": "Back to Barack Obama's Timeline" },
+        { "action": "click_element", "text": "Back to Barack Obama's Timeline" },
+        { "action": "wait", "condition": "navigate" },
+        { "action": "wait", "condition": "element", "text": "About" },
+        { "action": "click_element", "text": "About" },
+        { "action": "wait", "condition": "navigate" },
+        { "action": "wait", "condition": "element", "text": "Elected to U.S. Senate" },
+        { "action": "click_element", "text": "Elected to U.S. Senate" },
+        { "action": "wait", "condition": "navigate" },
+        { "action": "wait", "condition": "element", "text": "Home" },
+        { "action": "click_element", "text": "Home" },
+        { "action": "wait", "condition": "navigate" },
+        { "action": "wait", "condition": "element", "text": "Home" }
       ]
     },
     {
@@ -343,7 +268,10 @@
       "name": "Twitter",
       "url": "https://twitter.com/katyperry",
       "why": "#8 (Alexa global),Picked an interesting page",
-      "wait_seconds": 2,
+      "navigate_steps" : [
+        { "action": "navigate" },
+        { "action": "wait", "seconds": 2 }
+      ],
       "smoothness": {
         "action": "scroll",
         "scroll_is_infinite": true
@@ -391,7 +319,10 @@
     {
       "url": "http://games.yahoo.com",
       "why": "#1 games according to Alexa (with actual games in it)",
-      "wait_seconds": 2
+      "navigate_steps" : [
+        { "action": "navigate" },
+        { "action": "wait", "seconds": 2 }
+      ]
     },
     {
       "url": "http://booking.com",