Make JSTests ready for Android measurements.

This adds a common perf configuration for JSTests including
Classes, Collections, Iterators and Strings. This allows
the android test runner to handle subdirectories correctly
and to share the base.js resource in the parent directory.

The new json config has added resources configs for the
Android runner.

The perf runner's relative paths on the device are fixed as
well. Resources are only pushed on the configuration node
where they are specified. They are pushed to a dir on the
device that follows the same directory structure as on the
host. The binary is executed in the benchmark folder on the
device like on the host to allow relative path file
loading.

BUG=chromium:374740
LOG=n
TEST=python -m unittest run_perf_test
TBR=ulan@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/779923002

Cr-Commit-Position: refs/heads/master@{#25655}

test/js-perf-test/JSTests.json

+{
+  "name": "JSTests",
+  "run_count": 5,
+  "run_count_android_arm": 3,
+  "run_count_android_arm64": 3,
+  "units": "score",
+  "total": true,
+  "resources": ["base.js"],
+  "tests": [
+    {
+      "name": "Classes",
+      "path": ["Classes"],
+      "main": "run.js",
+      "resources": ["super.js"],
+      "flags": ["--harmony-classes"],
+      "results_regexp": "^%s\\-Classes\\(Score\\): (.+)$",
+      "tests": [
+        {"name": "Super"}
+      ]
+    },
+    {
+      "name": "Collections",
+      "path": ["Collections"],
+      "main": "run.js",
+      "resources": [
+        "common.js",
+        "map.js",
+        "run.js",
+        "set.js",
+        "weakmap.js",
+        "weakset.js"
+      ],
+      "results_regexp": "^%s\\-Collections\\(Score\\): (.+)$",
+      "tests": [
+        {"name": "Map-Smi"},
+        {"name": "Map-String"},
+        {"name": "Map-Object"},
+        {"name": "Map-Iteration"},
+        {"name": "Set-Smi"},
+        {"name": "Set-String"},
+        {"name": "Set-Object"},
+        {"name": "Set-Iteration"},
+        {"name": "WeakMap"},
+        {"name": "WeakSet"}
+      ]
+    },
+    {
+      "name": "Iterators",
+      "path": ["Iterators"],
+      "main": "run.js",
+      "resources": ["forof.js"],
+      "results_regexp": "^%s\\-Iterators\\(Score\\): (.+)$",
+      "tests": [
+        {"name": "ForOf"}
+      ]
+    },
+    {
+      "name": "Strings",
+      "path": ["Strings"],
+      "main": "run.js",
+      "resources": ["harmony-string.js"],
+      "flags": ["--harmony-strings"],
+      "results_regexp": "^%s\\-Strings\\(Score\\): (.+)$",
+      "tests": [
+        {"name": "StringFunctions"}
+      ]
+    }
+  ]
+}

tools/run_perf.py

@@ -219,7 +219,9 @@ class Graph(Node):
     self.graphs = parent.graphs[:] + [suite["name"]]
     self.flags = parent.flags[:] + suite.get("flags", [])
     self.test_flags = parent.test_flags[:] + suite.get("test_flags", [])
-    self.resources = parent.resources[:] + suite.get("resources", [])
+
+    # Values independent of parent node.
+    self.resources = suite.get("resources", [])
 
     # Descrete values (with parent defaults).
     self.binary = suite.get("binary", parent.binary)
@@ -519,9 +521,10 @@ class AndroidPlatform(Platform):  # pragma: no cover
         cwd=AndroidPlatform.DEVICE_DIR,
     )
 
-  def _PushFile(self, host_dir, file_name):
+  def _PushFile(self, host_dir, file_name, target_rel="."):
     file_on_host = os.path.join(host_dir, file_name)
-    file_on_device = AndroidPlatform.DEVICE_DIR + file_name
+    file_on_device = os.path.join(
+        AndroidPlatform.DEVICE_DIR, target_rel, file_name)
 
     # Only push files not yet pushed in one execution.
     if file_on_host in self.pushed:
@@ -535,26 +538,34 @@ class AndroidPlatform(Platform):  # pragma: no cover
   def PreTests(self, node, path):
     suite_dir = os.path.abspath(os.path.dirname(path))
     if node.path:
-      bench_dir = os.path.join(suite_dir,
-                               os.path.normpath(os.path.join(*node.path)))
+      bench_rel = os.path.normpath(os.path.join(*node.path))
+      bench_abs = os.path.join(suite_dir, bench_rel)
     else:
-      bench_dir = suite_dir
+      bench_rel = "."
+      bench_abs = suite_dir
 
     self._PushFile(self.shell_dir, node.binary)
     if isinstance(node, Runnable):
-      self._PushFile(bench_dir, node.main)
+      self._PushFile(bench_abs, node.main, bench_rel)
     for resource in node.resources:
-      self._PushFile(bench_dir, resource)
+      self._PushFile(bench_abs, resource, bench_rel)
 
   def Run(self, runnable, count):
     cache = cache_control.CacheControl(self.device)
     cache.DropRamCaches()
     binary_on_device = AndroidPlatform.DEVICE_DIR + runnable.binary
     cmd = [binary_on_device] + runnable.GetCommandFlags()
+
+    # Relative path to benchmark directory.
+    if runnable.path:
+      bench_rel = os.path.normpath(os.path.join(*runnable.path))
+    else:
+      bench_rel = "."
+
     try:
       output = self.device.RunShellCommand(
           cmd,
-          cwd=AndroidPlatform.DEVICE_DIR,
+          cwd=os.path.join(AndroidPlatform.DEVICE_DIR, bench_rel),
           timeout=runnable.timeout,
           retries=0,
       )