[Android] Select text when stylus first button is pressed.

content/browser/renderer_host/render_widget_host_view_android.cc

Index: content/browser/renderer_host/render_widget_host_view_android.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_android.cc b/content/browser/renderer_host/render_widget_host_view_android.cc
index 120161d67e823db56a39e5bace562b2155e70849..e7c22af6655e7316540619f1f8fc467794e2a3a2 100644
--- a/content/browser/renderer_host/render_widget_host_view_android.cc
+++ b/content/browser/renderer_host/render_widget_host_view_android.cc
@@ -194,7 +194,8 @@ RenderWidgetHostViewAndroid::RenderWidgetHostViewAndroid(
                                         widget_host->GetRoutingID()) != NULL),
       frame_evictor_(new DelegatedFrameEvictor(this)),
       locks_on_frame_count_(0),
-      observing_root_window_(false) {
+      observing_root_window_(false),
+      convert_touch_sequence_to_mouse_(false) {
   host_->SetView(this);
   SetContentViewCore(content_view_core);
   ImageTransportFactoryAndroid::AddObserver(this);
@@ -547,6 +548,21 @@ bool RenderWidgetHostViewAndroid::OnTouchEvent(
   if (!host_)
     return false;
 
+  if (event.GetAction() == ui::MotionEvent::ACTION_DOWN) {
+    convert_touch_sequence_to_mouse_ =

[jdduke (slow), 2014/06/20 16:52:49]

Sorry, my previous comment was confusing.

You'll want to move this added block of code down below "if
(!gesture_provider_.OnTouchEvent(event))", which will allow us to use the same
gesture detector for all the events.

[Changwan Ryu, 2014/06/23 06:39:22]

Done.

+        ContentViewCoreImpl::ShouldConvertToMouseEvent(event);
+    // TODO(changwan): add a gesture detector to handle the long press event.

[jdduke (slow), 2014/06/20 16:52:49]

If you move this block below as in the previous comment, you won't need the
extra detector here.

[Changwan Ryu, 2014/06/23 06:39:22]

Done.

+  }
+
+  if (convert_touch_sequence_to_mouse_) {
+    SendMouseEvent(CreateWebMouseEventFromMotionEvent(event));
+    gesture_provider_.OnTouchEventAck(false);
+    if (event.GetAction() == ui::MotionEvent::ACTION_UP ||

[jdduke (slow), 2014/06/20 16:52:49]

I lied, we actually don't want this line to reset
|convert_touch_sequence_to_mouse_|, as then we might get a delayed GESTURE_TAP
event after the timeout.  It should be sufficient to reset the bit only with
ACTION_DOWN.

[Changwan Ryu, 2014/06/23 06:39:22]

Done.

+        event.GetAction() == ui::MotionEvent::ACTION_CANCEL)
+      convert_touch_sequence_to_mouse_ = false;
+    return true;
+  }
+
   if (!gesture_provider_.OnTouchEvent(event))
     return false;