[tests]: Register Device::SetLoggingCallback()

And print this to the Dawn logger.
Tests will now print any diagnostic logging calls from Dawn.

Change-Id: Idd4bf816303c182809924f9a432570def808e1b6
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/57381
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Ben Clayton <bclayton@google.com>

src/tests/DawnTest.cpp

@@ -948,6 +948,25 @@ void DawnTestBase::SetUp() {
         glfwMakeContextCurrent(gTestEnv->GetOpenGLESWindow());
     }
 #endif  // defined(DAWN_ENABLE_BACKEND_OPENGLES)
+
+    device.SetLoggingCallback(
+        [](WGPULoggingType type, char const* message, void*) {
+            switch (type) {
+                case WGPULoggingType_Verbose:
+                    dawn::DebugLog() << message;
+                    break;
+                case WGPULoggingType_Warning:
+                    dawn::WarningLog() << message;
+                    break;
+                case WGPULoggingType_Error:
+                    dawn::ErrorLog() << message;
+                    break;
+                default:
+                    dawn::InfoLog() << message;
+                    break;
+            }
+        },
+        nullptr);
 }
 
 void DawnTestBase::TearDown() {