Add XFA pdfium fuzzer

pdf/pdfium/fuzzers/BUILD.gn

Index: pdf/pdfium/fuzzers/BUILD.gn
diff --git a/pdf/pdfium/fuzzers/BUILD.gn b/pdf/pdfium/fuzzers/BUILD.gn
index 70a043c5e3f4c1e3716447771ff42ac1d7d07a73..a647666b7a2b8937e03a132843f65ded43011088 100644
--- a/pdf/pdfium/fuzzers/BUILD.gn
+++ b/pdf/pdfium/fuzzers/BUILD.gn
@@ -11,21 +11,23 @@ import("//testing/libfuzzer/fuzzer_test.gni")
 group("fuzzers") {
 }
 
-fuzzer_test("pdfium_fuzzer") {
-  sources = [
-    "pdfium_fuzzer.cc",
-  ]
-  deps = [
-    "//third_party/pdfium",
-    "//third_party/pdfium:test_support",
-    "//v8",
-    "//v8:v8_libplatform",
-  ]
-  additional_configs = [
-    "//third_party/pdfium:pdfium_core_config",
-    "//v8:external_startup_data",
-  ]
-  dict = "dicts/pdf.dict"
+if (!pdf_enable_xfa) {
+  fuzzer_test("pdfium_fuzzer") {
+    sources = [
+      "pdfium_fuzzer.cc",
+    ]
+    deps = [
+      "//third_party/pdfium",
+      "//third_party/pdfium:test_support",
+      "//v8",
+      "//v8:v8_libplatform",
+    ]
+    additional_configs = [
+      "//third_party/pdfium:pdfium_core_config",
+      "//v8:external_startup_data",
+    ]
+    dict = "dicts/pdf.dict"
+  }
 }
 
 fuzzer_test("pdf_cmap_fuzzer") {
@@ -101,6 +103,25 @@ fuzzer_test("pdf_streamparser_fuzzer") {
 }
 
 if (pdf_enable_xfa) {
+  # If XFA is enabled in Chrome, this fuzzer becomes the same as the

[Lei Zhang, 2017/03/16 18:52:19]

Do you think it might be better to put this entry and pdfium_fuzzer entry in
their own separate if-else block?

[dsinclair, 2017/03/16 20:28:28]

Done.

+  # pdfium_fuzzer and can be removed.
+  fuzzer_test("pdfium_xfa_fuzzer") {
+    sources = [
+      "pdfium_fuzzer.cc",
+    ]
+    deps = [
+      "//third_party/pdfium",
+      "//third_party/pdfium:test_support",
+      "//v8",
+      "//v8:v8_libplatform",
+    ]
+    additional_configs = [
+      "//third_party/pdfium:pdfium_core_config",
+      "//v8:external_startup_data",
+    ]
+    dict = "dicts/pdf.dict"
+  }
+
   fuzzer_test("pdf_codec_bmp_fuzzer") {
     sources = []
     deps = [