Log device/hid messages to chrome://device-log.

device/hid/hid_service_mac.cc

Index: device/hid/hid_service_mac.cc
diff --git a/device/hid/hid_service_mac.cc b/device/hid/hid_service_mac.cc
index de6861de676ca45a012270b41939625a39cb0469..dec4e70a1153e0b7e476a0dc7349afc38784aa48 100644
--- a/device/hid/hid_service_mac.cc
+++ b/device/hid/hid_service_mac.cc
@@ -21,12 +21,17 @@
 #include "base/strings/sys_string_conversions.h"
 #include "base/thread_task_runner_handle.h"
 #include "base/threading/thread_restrictions.h"
+#include "components/device_event_log/device_event_log.h"
 #include "device/hid/hid_connection_mac.h"
 
 namespace device {
 
 namespace {
 
+std::string HexErrorCode(IOReturn error_code) {
+  return base::StringPrintf("0x%04x", error_code);
+}
+
 bool TryGetHidIntProperty(IOHIDDeviceRef device,
                           CFStringRef key,
                           int32_t* result) {
@@ -96,8 +101,8 @@ HidServiceMac::HidServiceMac(
                                        this,
                                        &iterator);
   if (result != kIOReturnSuccess) {
-    LOG(ERROR) << "Failed to listen for device arrival: "
-               << base::StringPrintf("0x%04x", result);
+    HID_LOG(ERROR) << "Failed to listen for device arrival: "
+                   << HexErrorCode(result);
     return;
   }
 
@@ -113,8 +118,8 @@ HidServiceMac::HidServiceMac(
                                             this,
                                             &iterator);
   if (result != kIOReturnSuccess) {
-    LOG(ERROR) << "Failed to listen for device removal: "
-               << base::StringPrintf("0x%04x", result);
+    HID_LOG(ERROR) << "Failed to listen for device removal: "
+                   << HexErrorCode(result);
     return;
   }
 
@@ -140,7 +145,7 @@ void HidServiceMac::Connect(const HidDeviceId& device_id,
   base::mac::ScopedIOObject<io_service_t> service(
       IORegistryEntryFromPath(kIOMasterPortDefault, service_path));
   if (!service.get()) {
-    VLOG(1) << "IOService not found for path: " << device_id;
+    HID_LOG(EVENT) << "IOService not found for path: " << device_id;
     task_runner_->PostTask(FROM_HERE, base::Bind(callback, nullptr));
     return;
   }
@@ -148,15 +153,14 @@ void HidServiceMac::Connect(const HidDeviceId& device_id,
   base::ScopedCFTypeRef<IOHIDDeviceRef> hid_device(
       IOHIDDeviceCreate(kCFAllocatorDefault, service));
   if (!hid_device) {
-    VLOG(1) << "Unable to create IOHIDDevice object.";
+    HID_LOG(EVENT) << "Unable to create IOHIDDevice object.";
     task_runner_->PostTask(FROM_HERE, base::Bind(callback, nullptr));
     return;
   }
 
   IOReturn result = IOHIDDeviceOpen(hid_device, kIOHIDOptionsTypeNone);
   if (result != kIOReturnSuccess) {
-    VLOG(1) << "Failed to open device: " << base::StringPrintf("0x%04x",
-                                                               result);
+    HID_LOG(EVENT) << "Failed to open device: " << HexErrorCode(result);
     task_runner_->PostTask(FROM_HERE, base::Bind(callback, nullptr));
     return;
   }
@@ -229,23 +233,23 @@ scoped_refptr<HidDeviceInfo> HidServiceMac::CreateDeviceInfo(
   IOReturn result =
       IORegistryEntryGetPath(service, kIOServicePlane, service_path);
   if (result != kIOReturnSuccess) {
-    VLOG(1) << "Failed to get IOService path: " << base::StringPrintf("0x%04x",
-                                                                      result);
+    HID_LOG(EVENT) << "Failed to get IOService path: " << HexErrorCode(result);
     return nullptr;
   }
 
   base::ScopedCFTypeRef<IOHIDDeviceRef> hid_device(
       IOHIDDeviceCreate(kCFAllocatorDefault, service));
   if (!hid_device) {
-    VLOG(1) << "Unable to create IOHIDDevice object for " << service_path
-            << ".";
+    HID_LOG(EVENT) << "Unable to create IOHIDDevice object for " << service_path
+                   << ".";
     return nullptr;
   }
 
   std::vector<uint8> report_descriptor;
   if (!TryGetHidDataProperty(hid_device, CFSTR(kIOHIDReportDescriptorKey),
                              &report_descriptor)) {
-    VLOG(1) << "Unable to get report descriptor for " << service_path << ".";
+    HID_LOG(EVENT) << "Unable to get report descriptor for " << service_path
+                   << ".";
     return nullptr;
   }