Conditionalize PDFium fuzzers on pdf_enable_v8 GN variable

Otherwise setting pdf_enable_v8=false breaks chrome build.

Change-Id: I86c3d369b4142ad05a986363839cbc6961772bc9
Reviewed-on: https://chromium-review.googlesource.com/c/1356010
Commit-Queue: Tom Sepez <tsepez@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#612435}

pdf/pdfium/fuzzers/BUILD.gn

@@ -6,8 +6,8 @@
 # When adding a fuzzer_test target make sure to add it to the group
 # 'pdf_fuzzers'
 
-import("//testing/test.gni")
 import("//testing/libfuzzer/fuzzer_test.gni")
+import("//testing/test.gni")
 import("//third_party/pdfium/pdfium.gni")
 
 group("fuzzers") {
@@ -16,7 +16,6 @@ group("fuzzers") {
 group("pdf_fuzzers") {
   testonly = true
   deps = [
-    ":pdf_cjs_util_fuzzer",
     ":pdf_cmap_fuzzer",
     ":pdf_codec_a85_fuzzer",
     ":pdf_codec_fax_fuzzer",
@@ -24,7 +23,6 @@ group("pdf_fuzzers") {
     ":pdf_codec_jbig2_fuzzer",
     ":pdf_codec_rle_fuzzer",
     ":pdf_font_fuzzer",
-    ":pdf_fx_date_helpers_fuzzer",
     ":pdf_hint_table_fuzzer",
     ":pdf_jpx_fuzzer",
     ":pdf_psengine_fuzzer",
@@ -32,6 +30,11 @@ group("pdf_fuzzers") {
     ":pdf_xml_fuzzer",
     ":pdfium_fuzzer",
   ]
+  if (pdf_enable_v8) {
+    deps += [
+      ":pdf_cjs_util_fuzzer",
+      ":pdf_fx_date_helpers_fuzzer",
+    ]
     if (pdf_enable_xfa) {
       deps += [
         ":pdf_bidi_fuzzer",
@@ -58,6 +61,7 @@ group("pdf_fuzzers") {
         deps += [ ":pdf_codec_tiff_fuzzer" ]
       }
     }
+  }
 }
 
 fuzzer_test("pdfium_fuzzer") {
@@ -69,13 +73,6 @@ fuzzer_test("pdfium_fuzzer") {
   seed_corpus = "//third_party/pdfium/testing/resources"
 }
 
-fuzzer_test("pdf_cjs_util_fuzzer") {
-  sources = []
-  deps = [
-    "//third_party/pdfium/testing/fuzzers:pdf_cjs_util_fuzzer_src",
-  ]
-}
-
 fuzzer_test("pdf_cmap_fuzzer") {
   sources = []
   deps = [
@@ -119,13 +116,6 @@ fuzzer_test("pdf_codec_jbig2_fuzzer") {
   ]
 }
 
-fuzzer_test("pdf_fx_date_helpers_fuzzer") {
-  sources = []
-  deps = [
-    "//third_party/pdfium/testing/fuzzers:pdf_fx_date_helpers_fuzzer_src",
-  ]
-}
-
 fuzzer_test("pdf_font_fuzzer") {
   sources = []
   deps = [
@@ -170,7 +160,22 @@ fuzzer_test("pdf_xml_fuzzer") {
   dict = "dicts/pdf_xml.dict"
 }
 
-if (pdf_enable_xfa) {
+if (pdf_enable_v8) {
+  fuzzer_test("pdf_cjs_util_fuzzer") {
+    sources = []
+    deps = [
+      "//third_party/pdfium/testing/fuzzers:pdf_cjs_util_fuzzer_src",
+    ]
+  }
+
+  fuzzer_test("pdf_fx_date_helpers_fuzzer") {
+    sources = []
+    deps = [
+      "//third_party/pdfium/testing/fuzzers:pdf_fx_date_helpers_fuzzer_src",
+    ]
+  }
+
+  if (pdf_enable_xfa) {
     if (pdf_enable_xfa_bmp) {
       fuzzer_test("pdf_codec_bmp_fuzzer") {
         sources = []
@@ -283,4 +288,5 @@ if (pdf_enable_xfa) {
       dict = "dicts/pdf.dict"
       seed_corpus = "//third_party/pdfium/testing/resources"
     }
+  }
 }