Make base work on iOS

base/debug/stack_trace_android.cc

Index: base/debug/stack_trace_android.cc
diff --git a/base/debug/stack_trace_android.cc b/base/debug/stack_trace_android.cc
index 5168b188da2f683a1ae50c830fbfdb57421a69e2..e05e30c82ec4a10b9401f2f099519a352296d228 100644
--- a/base/debug/stack_trace_android.cc
+++ b/base/debug/stack_trace_android.cc
@@ -74,7 +74,7 @@ StackTrace::StackTrace() {
 
 void StackTrace::Print() const {
   std::string backtrace = ToString();
-  __android_log_write(ANDROID_LOG_ERROR, "chromium", backtrace.c_str());
+  __android_log_write(ANDROID_LOG_ERROR, ANDROID_LOG_TAG, backtrace.c_str());
 }
 
 // NOTE: Native libraries in APKs are stripped before installing. Print out the
@@ -91,10 +91,10 @@ void StackTrace::OutputToStream(std::ostream* os) const {
   base::ThreadRestrictions::ScopedAllowIO allow_io;
   if (!ReadProcMaps(&proc_maps)) {
     __android_log_write(
-        ANDROID_LOG_ERROR, "chromium", "Failed to read /proc/self/maps");
+        ANDROID_LOG_ERROR, ANDROID_LOG_TAG, "Failed to read /proc/self/maps");
   } else if (!ParseProcMaps(proc_maps, &regions)) {
     __android_log_write(
-        ANDROID_LOG_ERROR, "chromium", "Failed to parse /proc/self/maps");
+        ANDROID_LOG_ERROR, ANDROID_LOG_TAG, "Failed to parse /proc/self/maps");
   }
 
   for (size_t i = 0; i < count_; ++i) {