IPC: Make ipc_perftests run on Android.

base/test/perf_test_suite.cc

Index: base/test/perf_test_suite.cc
diff --git a/base/test/perf_test_suite.cc b/base/test/perf_test_suite.cc
index 04ebb8b5d4eaa1c7889d49d191559b97c767580a..415aaef07e831621d31f0cc60a21be93b98e355d 100644
--- a/base/test/perf_test_suite.cc
+++ b/base/test/perf_test_suite.cc
@@ -24,9 +24,13 @@ void PerfTestSuite::Initialize() {
   FilePath log_path =
       CommandLine::ForCurrentProcess()->GetSwitchValuePath("log-file");
   if (log_path.empty()) {
-    FilePath exe;
-    PathService::Get(FILE_EXE, &exe);
-    log_path = exe.ReplaceExtension(FILE_PATH_LITERAL("log"));
+    PathService::Get(FILE_EXE, &log_path);
+#if defined(OS_ANDROID)
+    base::FilePath tmp_dir;
+    PathService::Get(base::DIR_CACHE, &tmp_dir);
+    log_path = tmp_dir.Append(log_path.BaseName());
+#endif
+    log_path = log_path.ReplaceExtension(FILE_PATH_LITERAL("log"));
     log_path = log_path.InsertBeforeExtension(FILE_PATH_LITERAL("_perf"));
   }
   ASSERT_TRUE(InitPerfLog(log_path));