Prepare SyntheticPointerAction to handle touch actions for multiple fingers

content/renderer/gpu/gpu_benchmarking_extension.cc

Index: content/renderer/gpu/gpu_benchmarking_extension.cc
diff --git a/content/renderer/gpu/gpu_benchmarking_extension.cc b/content/renderer/gpu/gpu_benchmarking_extension.cc
index 8fe5bae7d4889f1e6ea25c7f664b61aeae027afc..209dcc80533156a2be4051808841590bbe70e263 100644
--- a/content/renderer/gpu/gpu_benchmarking_extension.cc
+++ b/content/renderer/gpu/gpu_benchmarking_extension.cc
@@ -21,6 +21,7 @@
 #include "content/common/child_process_messages.h"
 #include "content/common/input/synthetic_gesture_params.h"
 #include "content/common/input/synthetic_pinch_gesture_params.h"
+#include "content/common/input/synthetic_pointer_action_params.h"
 #include "content/common/input/synthetic_smooth_drag_gesture_params.h"
 #include "content/common/input/synthetic_smooth_scroll_gesture_params.h"
 #include "content/common/input/synthetic_tap_gesture_params.h"
@@ -502,6 +503,7 @@ gin::ObjectTemplateBuilder GpuBenchmarking::GetObjectTemplateBuilder(
       .SetMethod("visualViewportHeight", &GpuBenchmarking::VisualViewportHeight)
       .SetMethod("visualViewportWidth", &GpuBenchmarking::VisualViewportWidth)
       .SetMethod("tap", &GpuBenchmarking::Tap)
+      .SetMethod("touchActionSequence", &GpuBenchmarking::TouchActionSequence)
       .SetMethod("clearImageCache", &GpuBenchmarking::ClearImageCache)
       .SetMethod("runMicroBenchmark", &GpuBenchmarking::RunMicroBenchmark)
       .SetMethod("sendMessageToMicroBenchmark",
@@ -883,6 +885,74 @@ bool GpuBenchmarking::Tap(gin::Arguments* args) {
   return true;
 }
 
+bool GpuBenchmarking::TouchActionSequence(gin::Arguments* args) {

[tdresser, 2016/05/13 13:58:04]

This patch is getting a little big - maybe we could land the GpuBenchmarking
extension part separately?

[lanwei, 2016/05/19 16:04:13]

Sure. I will remove this file from this patch.

+  GpuBenchmarkingContext context;
+  if (!context.Init(false))
+    return false;
+
+  v8::Local<v8::Function> callback;
+
+  // pass a two-dimensional list of actions.
+
+  int pointer_action_type_int;
+  int index;
+  float position_x;
+  float position_y;
+  int gesture_source_type = SyntheticGestureParams::DEFAULT_INPUT;
+  SyntheticPointerActionParams::PointerActionType pointer_action_type;
+  if (!GetArg(args, &pointer_action_type_int)) {
+    return false;
+  }
+  pointer_action_type =
+      static_cast<SyntheticPointerActionParams::PointerActionType>(
+          pointer_action_type_int);
+  std::unique_ptr<SyntheticPointerActionParams> gesture_params(
+      new SyntheticPointerActionParams(pointer_action_type));
+
+  if (pointer_action_type !=
+          SyntheticPointerActionParams::PointerActionType::PROCESS &&
+      pointer_action_type !=
+          SyntheticPointerActionParams::PointerActionType::FINISH) {
+    if (!GetArg(args, &index)) {
+      return false;
+    }
+    gesture_params->set_index(index);
+    if (pointer_action_type ==
+            SyntheticPointerActionParams::PointerActionType::PRESS ||
+        pointer_action_type ==
+            SyntheticPointerActionParams::PointerActionType::MOVE) {
+      if (!GetArg(args, &position_x) || !GetArg(args, &position_y)) {
+        return false;
+      }
+      gesture_params->set_position(gfx::PointF(position_x, position_y));
+    }
+  }
+
+  if (!GetOptionalArg(args, &gesture_source_type)) {
+    return false;
+  }
+
+  if (pointer_action_type !=
+      SyntheticPointerActionParams::PointerActionType::FINISH) {
+    context.render_view_impl()->GetWidget()->QueueSyntheticGesture(
+        std::move(gesture_params));
+    return true;
+  }
+
+  // At the end, we will send a 'FINISH' action and need a callback.
+  scoped_refptr<CallbackAndContext> callback_and_context =
+      new CallbackAndContext(args->isolate(), callback,
+                             context.web_frame()->mainWorldScriptContext());
+  // TODO(nduca): If the render_view_impl is destroyed while the gesture is in
+  // progress, we will leak the callback and context. This needs to be fixed,
+  // somehow.
+  context.render_view_impl()->GetWidget()->QueueSyntheticGesture(
+      std::move(gesture_params),
+      base::Bind(&OnSyntheticGestureCompleted,
+                 base::RetainedRef(callback_and_context)));
+  return true;
+}
+
 void GpuBenchmarking::ClearImageCache() {
   WebImageCache::clear();
 }