Reland of Android: Add support for TraceEvent before the native library is loaded.

base/BUILD.gn

Index: base/BUILD.gn
diff --git a/base/BUILD.gn b/base/BUILD.gn
index e44570c706c612d1dbe7e9add24cd7d7272244c3..67a744b0c1ccf7953589295f97b2a5b57a7f7b6f 100644
--- a/base/BUILD.gn
+++ b/base/BUILD.gn
@@ -161,6 +161,8 @@ component("base") {
     "android/context_utils.h",
     "android/cpu_features.cc",
     "android/cxa_demangle_stub.cc",
+    "android/early_trace_event_binding.cc",
+    "android/early_trace_event_binding.h",
     "android/event_log.cc",
     "android/event_log.h",
     "android/field_trial_list.cc",
@@ -2171,6 +2173,7 @@ if (is_android) {
       "android/java/src/org/chromium/base/ContentUriUtils.java",
       "android/java/src/org/chromium/base/ContextUtils.java",
       "android/java/src/org/chromium/base/CpuFeatures.java",
+      "android/java/src/org/chromium/base/EarlyTraceEvent.java",
       "android/java/src/org/chromium/base/EventLog.java",
       "android/java/src/org/chromium/base/FieldTrialList.java",
       "android/java/src/org/chromium/base/ImportantFileWriterAndroid.java",
@@ -2232,6 +2235,7 @@ if (is_android) {
       "android/java/src/org/chromium/base/ContentUriUtils.java",
       "android/java/src/org/chromium/base/ContextUtils.java",
       "android/java/src/org/chromium/base/CpuFeatures.java",
+      "android/java/src/org/chromium/base/EarlyTraceEvent.java",
       "android/java/src/org/chromium/base/EventLog.java",
       "android/java/src/org/chromium/base/FieldTrialList.java",
       "android/java/src/org/chromium/base/FileUtils.java",