[tvos] Exclude power_monitor_device_source_ios.mm

This excludes power_monitor_device_source_ios.mm for tvOS since it
doesn’t have anything related to battery such as `batteryState` from
`UIDevice`.

Bug: 391914246
Change-Id: I9dbb11b1e821b9624dfd34eb180ca32224d6fd7d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6429465
Reviewed-by: Dave Tapuska <dtapuska@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1444413}

base/BUILD.gn

@@ -2172,7 +2172,6 @@ component("base") {
       "ios/ns_error_util.h",
       "ios/ns_error_util.mm",
       "ios/ns_range.h",
-      "power_monitor/power_monitor_device_source_ios.mm",
       "process/process_metrics_ios.cc",
       "process/process_metrics_posix.cc",
       "profiler/core_unwinders_ios.cc",
@@ -2210,13 +2209,18 @@ component("base") {
       ]
 
       if (target_platform == "tvos") {
-        # tvOS apps must be single-process. Build a Process version that does
+        sources += [
-        # the bare minimum and does not use Mach ports.
+          "power_monitor/power_monitor_device_source_stub.cc",
-        sources += [ "process/process_tvos.cc" ]
+
+          # tvOS apps must be single-process. Build a Process version that does
+          # the bare minimum and does not use Mach ports.
+          "process/process_tvos.cc",
+        ]
       } else {
         sources += [
           "apple/mach_port_rendezvous_ios.cc",
           "apple/mach_port_rendezvous_ios.h",
+          "power_monitor/power_monitor_device_source_ios.mm",
           "process/process_mac.cc",
         ]
       }
@@ -2234,6 +2238,7 @@ component("base") {
       }
     } else {
       sources += [
+        "power_monitor/power_monitor_device_source_ios.mm",
         "process/launch_ios.cc",
         "process/memory_stubs.cc",
         "process/process_stubs.cc",

base/power_monitor/power_monitor_device_source.cc

@@ -9,13 +9,13 @@
 namespace base {
 
 PowerMonitorDeviceSource::PowerMonitorDeviceSource() {
-#if BUILDFLAG(IS_APPLE) || BUILDFLAG(IS_WIN)
+#if (BUILDFLAG(IS_APPLE) && !BUILDFLAG(IS_IOS_TVOS)) || BUILDFLAG(IS_WIN)
   PlatformInit();
 #endif
 }
 
 PowerMonitorDeviceSource::~PowerMonitorDeviceSource() {
-#if BUILDFLAG(IS_APPLE) || BUILDFLAG(IS_WIN)
+#if (BUILDFLAG(IS_APPLE) && !BUILDFLAG(IS_IOS_TVOS)) || BUILDFLAG(IS_WIN)
   PlatformDestroy();
 #endif
 }

base/power_monitor/power_monitor_device_source.h

@@ -93,7 +93,7 @@ class BASE_EXPORT PowerMonitorDeviceSource : public PowerMonitorSource {
   };
 #endif  // BUILDFLAG(IS_WIN)
 
-#if BUILDFLAG(IS_APPLE) || BUILDFLAG(IS_WIN)
+#if (BUILDFLAG(IS_APPLE) && !BUILDFLAG(IS_IOS_TVOS)) || BUILDFLAG(IS_WIN)
   void PlatformInit();
   void PlatformDestroy();
 #endif  // BUILDFLAG(IS_APPLE) || BUILDFLAG(IS_WIN)