[ChromeDriver] Support triple click in Chromedriver PerformActions

When we are using PerformActions from ChromeDriver to simulate three
mouse click, it only set the click count to 2, not 3, so this test fails
third_party/blink/web_tests/external/wpt/webdriver/tests/perform_actions
/pointer_tripleclick.py.

PerformActions should keep the mouse click count and decide if we should
increase the count or set to 1 when we have a mouse press based on the
interval of two mouse presses and difference between the current mouse
positions and the last one.

Bug: 1119679
Change-Id: I2b941c5d295cdd457109c8866c55e02bb2360555
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2366655Reviewed-by: John Chen <johnchen@chromium.org>
Commit-Queue: Lan Wei <lanwei@chromium.org>
Cr-Commit-Position: refs/heads/master@{#800201}

chrome/test/chromedriver/window_commands.cc

@@ -1492,6 +1492,7 @@ Status ExecutePerformActions(Session* session,
   std::map<std::string, bool> has_touch_start;
   std::map<std::string, int> buttons;
   std::map<std::string, std::string> button_type;
+  std::map<std::string, int> click_counts;
   int viewport_width = 0, viewport_height = 0;
   int init_x = 0, init_y = 0;
 
@@ -1561,10 +1562,12 @@ Status ExecutePerformActions(Session* session,
 
             std::string pointer_type;
             action->GetString("pointerType", &pointer_type);
-            if (pointer_type == "mouse" || pointer_type == "pen")
+            if (pointer_type == "mouse" || pointer_type == "pen") {
               buttons[id] = input_state->FindKey("pressed")->GetInt();
-            else if (pointer_type == "touch")
+              click_counts[id] = 0;
+            } else if (pointer_type == "touch") {
               has_touch_start[id] = false;
+            }
           }
         }
 
@@ -1688,6 +1691,7 @@ Status ExecutePerformActions(Session* session,
                 } else if (buttons[id] == 0) {
                   button_type[id].clear();
                 }
+
                 MouseEvent event(StringToMouseEventType(action_type),
                                  StringToMouseButton(button_type[id]),
                                  action_locations[id].x(),
@@ -1701,7 +1705,8 @@ Status ExecutePerformActions(Session* session,
                       event.x, event.y, session->mouse_position.x,
                       session->mouse_position.y, session->click_count,
                       timestamp, session->mouse_click_timestamp);
-                  event.click_count = is_repeated_click ? 2 : 1;
+                  click_counts[id] = is_repeated_click ? ++click_counts[id] : 1;
+                  event.click_count = click_counts[id];
                   buttons[id] |= StringToModifierMouseButton(button_type[id]);
                   session->mouse_position = WebPoint(event.x, event.y);
                   session->click_count = event.click_count;

third_party/blink/web_tests/external/wpt/webdriver/tests/perform_actions/pointer_tripleclick.py

@@ -4,7 +4,7 @@ from tests.support.inline import inline
 
 lots_of_text = "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor "\
                "incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud "\
-               " exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat."
+               "exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat."
 
 
 def test_tripleclick_at_coordinates(session, mouse_chain):