[Android] Add animation frame time histogram class.

base/BUILD.gn

Index: base/BUILD.gn
diff --git a/base/BUILD.gn b/base/BUILD.gn
index 0148656c2d70f68a8b98e6ee25b0005ccf718481..95ddc6faf0322f6f105b0d5191e7c128cfa14711 100644
--- a/base/BUILD.gn
+++ b/base/BUILD.gn
@@ -15,6 +15,8 @@ component("base") {
     "allocator/allocator_extension.h",
     "allocator/type_profiler_control.cc",
     "allocator/type_profiler_control.h",
+    "android/animation_frame_time_histogram.cc",
+    "android/animation_frame_time_histogram.h",
     "android/application_status_listener.cc",
     "android/application_status_listener.h",
     "android/base_jni_onload.cc",
@@ -1451,6 +1453,7 @@ if (is_android) {
   generate_jni("base_jni_headers") {
     sources = [
       "android/java/src/org/chromium/base/ApplicationStatus.java",
+      "android/java/src/org/chromium/base/AnimationFrameTimeHistogram.java",
       "android/java/src/org/chromium/base/BuildInfo.java",
       "android/java/src/org/chromium/base/CommandLine.java",
       "android/java/src/org/chromium/base/ContentUriUtils.java",