Do not run perf checker on Android

TBR=dmazzoni@chromium.org

AX-RelNotes: n/a
Bug: 1137892
Change-Id: Iaa1108d255b568eb2866b8a82c70efe06ff61837
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2469097
Commit-Queue: Dominic Mazzoni <dmazzoni@chromium.org>
Reviewed-by: Dominic Mazzoni <dmazzoni@chromium.org>
Auto-Submit: Aaron Leventhal <aleventhal@chromium.org>
Cr-Commit-Position: refs/heads/master@{#817057}

content/browser/accessibility/cross_platform_accessibility_browsertest.cc

@@ -42,7 +42,8 @@
 
 #if defined(NDEBUG) && !defined(ADDRESS_SANITIZER) &&              \
     !defined(LEAK_SANITIZER) && !defined(MEMORY_SANITIZER) &&      \
-    !defined(THREAD_SANITIZER) && !defined(UNDEFINED_SANITIZER)
+    !defined(THREAD_SANITIZER) && !defined(UNDEFINED_SANITIZER) && \
+    !defined(OS_ANDROID)
 #define IS_FAST_BUILD
 #endif