Disable broken Android rtc_unittests.

After disabling all of these, the rest of the tests pass, at least on
my Nexus 7 device.

BUG=webrtc:4364

Review-Url: https://codereview.webrtc.org/2151823002
Cr-Commit-Position: refs/heads/master@{#13485}
diff --git a/webrtc/base/fileutils_unittest.cc b/webrtc/base/fileutils_unittest.cc
index 51396ca..756f511 100644
--- a/webrtc/base/fileutils_unittest.cc
+++ b/webrtc/base/fileutils_unittest.cc
@@ -17,14 +17,21 @@
 
 namespace rtc {
 
+#if defined (WEBRTC_ANDROID)
+// Fails on Android: https://bugs.chromium.org/p/webrtc/issues/detail?id=4364.
+#define MAYBE_FilesystemTest DISABLED_FilesystemTest
+#else
+#define MAYBE_FilesystemTest FilesystemTest
+#endif
+
 // Make sure we can get a temp folder for the later tests.
-TEST(FilesystemTest, GetTemporaryFolder) {
+TEST(MAYBE_FilesystemTest, GetTemporaryFolder) {
   Pathname path;
   EXPECT_TRUE(Filesystem::GetTemporaryFolder(path, true, NULL));
 }
 
 // Test creating a temp file, reading it back in, and deleting it.
-TEST(FilesystemTest, TestOpenFile) {
+TEST(MAYBE_FilesystemTest, TestOpenFile) {
   Pathname path;
   EXPECT_TRUE(Filesystem::GetTemporaryFolder(path, true, NULL));
   path.SetPathname(Filesystem::TempFilename(path, "ut"));
@@ -52,7 +59,7 @@
 }
 
 // Test opening a non-existent file.
-TEST(FilesystemTest, TestOpenBadFile) {
+TEST(MAYBE_FilesystemTest, TestOpenBadFile) {
   Pathname path;
   EXPECT_TRUE(Filesystem::GetTemporaryFolder(path, true, NULL));
   path.SetFilename("not an actual file");
@@ -65,7 +72,7 @@
 
 // Test that CreatePrivateFile fails for existing files and succeeds for
 // non-existent ones.
-TEST(FilesystemTest, TestCreatePrivateFile) {
+TEST(MAYBE_FilesystemTest, TestCreatePrivateFile) {
   Pathname path;
   EXPECT_TRUE(Filesystem::GetTemporaryFolder(path, true, NULL));
   path.SetFilename("private_file_test");
@@ -86,7 +93,7 @@
 }
 
 // Test checking for free disk space.
-TEST(FilesystemTest, TestGetDiskFreeSpace) {
+TEST(MAYBE_FilesystemTest, TestGetDiskFreeSpace) {
   // Note that we should avoid picking any file/folder which could be located
   // at the remotely mounted drive/device.
   Pathname path;
@@ -119,12 +126,12 @@
 }
 
 // Tests that GetCurrentDirectory() returns something.
-TEST(FilesystemTest, TestGetCurrentDirectory) {
+TEST(MAYBE_FilesystemTest, TestGetCurrentDirectory) {
   EXPECT_FALSE(Filesystem::GetCurrentDirectory().empty());
 }
 
 // Tests that GetAppPathname returns something.
-TEST(FilesystemTest, TestGetAppPathname) {
+TEST(MAYBE_FilesystemTest, TestGetAppPathname) {
   Pathname path;
   EXPECT_TRUE(Filesystem::GetAppPathname(&path));
   EXPECT_FALSE(path.empty());