No need to depend on all of base in chromium build.

Now that partition alloc is fully stand-alone, and that the visibility
constraint has been removed in
  https://chromium-review.googlesource.com/c/chromium/src/+/4714471

PDFium can always use a narrower set of deps in its build files.

Change-Id: Ibe99a9d44f64db825bd88cc82438113009096266
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/110270
Reviewed-by: K. Moon <kmoon@chromium.org>
Commit-Queue: Tom Sepez <tsepez@chromium.org>

core/fxcrt/BUILD.gn

diff --git a/core/fxcrt/BUILD.gn b/core/fxcrt/BUILD.gn
index 272dd22..e72220b 100644
--- a/core/fxcrt/BUILD.gn
+++ b/core/fxcrt/BUILD.gn
@@ -11,14 +11,10 @@
   deps = [ "../../third_party:pdfium_compiler_specific" ]
   configs += [ "../../:pdfium_strict_config" ]
   if (pdf_use_partition_alloc) {
-    if (build_with_chromium) {
-      deps += [ "//base" ]
-    } else {
-      deps += [
-        "//base/allocator/partition_allocator:partition_alloc_buildflags",
-        "//base/allocator/partition_allocator:raw_ptr",
-      ]
-    }
+    deps += [
+      "//base/allocator/partition_allocator:partition_alloc_buildflags",
+      "//base/allocator/partition_allocator:raw_ptr",
+    ]
   }
 }
 
@@ -146,15 +142,11 @@
   ]
   if (pdf_use_partition_alloc) {
     sources += [ "fx_memory_pa.cpp" ]
-    if (build_with_chromium) {
-      deps += [ "//base" ]
-    } else {
-      deps += [
-        "//base/allocator/partition_allocator:partition_alloc",
-        "//base/allocator/partition_allocator:partition_alloc_buildflags",
-        "//base/allocator/partition_allocator:raw_ptr",
-      ]
-    }
+    deps += [
+      "//base/allocator/partition_allocator:partition_alloc",
+      "//base/allocator/partition_allocator:partition_alloc_buildflags",
+      "//base/allocator/partition_allocator:raw_ptr",
+    ]
   } else {
     sources += [ "fx_memory_malloc.cpp" ]
   }