Revert of Ozone support for device special cases in keyboard event rewriting.

chrome/browser/chromeos/events/event_rewriter.cc

Index: chrome/browser/chromeos/events/event_rewriter.cc
diff --git a/chrome/browser/chromeos/events/event_rewriter.cc b/chrome/browser/chromeos/events/event_rewriter.cc
index e35bdae02167a4ab76b4199fbcddabd19912adb7..b0b8531d9c45aa7a163dd4718b60bf83e0102d2d 100644
--- a/chrome/browser/chromeos/events/event_rewriter.cc
+++ b/chrome/browser/chromeos/events/event_rewriter.cc
@@ -23,7 +23,6 @@
 #include "components/user_manager/user_manager.h"
 #include "ui/base/ime/chromeos/ime_keyboard.h"
 #include "ui/base/ime/chromeos/input_method_manager.h"
-#include "ui/events/devices/device_data_manager.h"
 #include "ui/events/event.h"
 #include "ui/events/event_utils.h"
 #include "ui/events/keycodes/keyboard_code_conversion.h"
@@ -31,7 +30,12 @@
 
 #if defined(USE_X11)
 #include <X11/extensions/XInput2.h>
+#include <X11/Xatom.h>
 #include <X11/Xlib.h>
+
+#ifndef XI_PROP_PRODUCT_ID
+#define XI_PROP_PRODUCT_ID "Device Product ID"
+#endif
 
 // Get rid of macros from Xlib.h that conflicts with other parts of the code.
 #undef RootWindow
@@ -932,17 +936,73 @@
 }
 
 EventRewriter::DeviceType EventRewriter::KeyboardDeviceAdded(int device_id) {
-  if (!ui::DeviceDataManager::HasInstance())
+#if defined(USE_X11)
+  DCHECK_NE(XIAllDevices, device_id);
+  DCHECK_NE(XIAllMasterDevices, device_id);
+  if (device_id == XIAllDevices || device_id == XIAllMasterDevices) {
+    LOG(ERROR) << "Unexpected device_id passed: " << device_id;
     return kDeviceUnknown;
-  const std::vector<ui::KeyboardDevice>& keyboards =
-      ui::DeviceDataManager::GetInstance()->keyboard_devices();
-  for (const auto& keyboard : keyboards) {
-    if (keyboard.id == device_id) {
-      return KeyboardDeviceAddedInternal(
-          keyboard.id, keyboard.name, keyboard.vendor_id, keyboard.product_id);
+  }
+
+  Atom product_id_atom =
+      XInternAtom(gfx::GetXDisplay(), XI_PROP_PRODUCT_ID, 1);
+
+  int ndevices_return = 0;
+  XIDeviceInfo* device_info =
+      XIQueryDevice(gfx::GetXDisplay(), device_id, &ndevices_return);
+
+  // Since |device_id| is neither XIAllDevices nor XIAllMasterDevices,
+  // the number of devices found should be either 0 (not found) or 1.
+  if (!device_info) {
+    LOG(ERROR) << "XIQueryDevice: Device ID " << device_id << " is unknown.";
+    return kDeviceUnknown;
+  }
+
+  DeviceType dev_type = kDeviceUnknown;
+  DCHECK_EQ(1, ndevices_return);
+  for (int i = 0; i < ndevices_return; ++i) {
+    // Get keyboard product and vendor id.
+    int vendor_id = kUnknownVendorId;
+    int product_id = kUnknownProductId;
+    uint32* product_info = NULL;
+    Atom type;
+    int format_return;
+    unsigned long num_items_return;
+    unsigned long bytes_after_return;
+    if (XIGetProperty(gfx::GetXDisplay(),
+                      device_info[i].deviceid,
+                      product_id_atom,
+                      0,
+                      2,
+                      0,
+                      XA_INTEGER,
+                      &type,
+                      &format_return,
+                      &num_items_return,
+                      &bytes_after_return,
+                      reinterpret_cast<unsigned char **>(&product_info)) == 0 &&
+        product_info) {
+      vendor_id = product_info[0];
+      product_id = product_info[1];
     }
-  }
-  return kDeviceUnknown;
+
+    DCHECK_EQ(device_id, device_info[i].deviceid);  // see the comment above.
+    DCHECK(device_info[i].name);
+    dev_type = KeyboardDeviceAddedInternal(device_info[i].deviceid,
+                                           device_info[i].name,
+                                           vendor_id,
+                                           product_id);
+  }
+  XIFreeDeviceInfo(device_info);
+  return dev_type;
+#else
+  // TODO(spang): Figure out where we can get keyboard vendor/product id from in
+  // Ozone/Freon version.
+  return KeyboardDeviceAddedInternal(device_id,
+                                     "keyboard",
+                                     kUnknownVendorId,
+                                     kUnknownProductId);
+#endif
 }
 
 }  // namespace chromeos