Revert "[Reland] Switch pdfium target from a static library to a component"

This reverts commit d7e5b1d7b0aa352af9d30d5d9410c8d352a483ba.

Reason for revert: Causing clusterfuzz failures

Original change's description:
> [Reland] Switch pdfium target from a static library to a component
> 
> Reland fixes linker failures, verified by Chromium's CQ:
> https://chromium-review.googlesource.com/c/chromium/src/+/1590226
> 
> Reduces size of build directory by 206 MiB (-1.0%) when building "all"
> with gn args "use_goma=true is_component_build=true is_debug=false
> enable_nacl=false symbol_level=1".  Build time also reduced from
> 426.111s to 405.252s, though I only took one sample.
> 
> Also added some missing dependencies that were causing linker failures
> in component builds.
> 
> BUG=chromium:941663
> R=​thestig
> 
> Change-Id: Ie5d71a50741e0c4f57554b29816e89cf43fffdc6
> Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/53731
> Auto-Submit: Thomas Anderson <thomasanderson@chromium.org>
> Commit-Queue: Lei Zhang <thestig@chromium.org>
> Reviewed-by: Lei Zhang <thestig@chromium.org>

TBR=thestig@chromium.org,thomasanderson@chromium.org

Change-Id: Id664f2dbe6a4669220c3dd7955e983f76ef6a012
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:941663
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/53810
Reviewed-by: Thomas Anderson <thomasanderson@chromium.org>
Commit-Queue: Thomas Anderson <thomasanderson@chromium.org>
diff --git a/BUILD.gn b/BUILD.gn
index 65a8597..83fc631 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -129,7 +129,7 @@
   public_configs = [ ":pdfium_public_config" ]
 }
 
-jumbo_component("pdfium") {
+jumbo_static_library("pdfium") {
   sources = [
     "fpdfsdk/fpdf_annot.cpp",
     "fpdfsdk/fpdf_attachment.cpp",
@@ -184,8 +184,6 @@
     "core/fxcrt",
   ]
 
-  defines = [ "FPDF_IMPLEMENTATION" ]
-
   if (pdf_enable_xfa) {
     deps += [
       "fpdfsdk/fpdfxfa",
@@ -361,7 +359,6 @@
   ]
   deps = [
     ":pdfium",
-    "core/fxcrt",
     "testing/image_diff",
     "//build/win:default_exe_manifest",
   ]
diff --git a/core/fpdfapi/font/BUILD.gn b/core/fpdfapi/font/BUILD.gn
index c5ce882..1e8c76e 100644
--- a/core/fpdfapi/font/BUILD.gn
+++ b/core/fpdfapi/font/BUILD.gn
@@ -48,9 +48,6 @@
     "../cmaps",
     "../parser",
   ]
-  if (is_mac) {
-    libs = [ "CoreFoundation.framework" ]
-  }
   allow_circular_includes_from = [
     "../../fxge",
     "../cmaps",
diff --git a/core/fxcrt/BUILD.gn b/core/fxcrt/BUILD.gn
index fd21666..88337ff 100644
--- a/core/fxcrt/BUILD.gn
+++ b/core/fxcrt/BUILD.gn
@@ -88,7 +88,6 @@
     "../../fpdfsdk/*",
     "../../fxbarcode:*",
     "../../fxjs:*",
-    "../../testing/fuzzers:*",
     "../../third_party:fx_agg",
     "../../third_party:fx_lcms2",
     "../../third_party:fx_tiff",
diff --git a/core/fxge/BUILD.gn b/core/fxge/BUILD.gn
index 83374cc..6c9ed9a 100644
--- a/core/fxge/BUILD.gn
+++ b/core/fxge/BUILD.gn
@@ -168,7 +168,6 @@
       "apple/fx_mac_imp.cpp",
       "apple/fx_quartz_device.cpp",
     ]
-    libs = [ "CoreGraphics.framework" ]
   }
 
   if (is_win) {
diff --git a/public/fpdfview.h b/public/fpdfview.h
index 601ac54..8892da5 100644
--- a/public/fpdfview.h
+++ b/public/fpdfview.h
@@ -154,27 +154,12 @@
 // Dictionary value types.
 typedef int FPDF_OBJECT_TYPE;
 
-#if defined(COMPONENT_BUILD)
-#if defined(WIN32)
-#if defined(FPDF_IMPLEMENTATION)
+#if defined(_WIN32) && defined(FPDFSDK_EXPORTS)
+// On Windows system, functions are exported in a DLL
 #define FPDF_EXPORT __declspec(dllexport)
-#else
-#define FPDF_EXPORT __declspec(dllimport)
-#endif  // defined(FPDF_IMPLEMENTATION)
-#else
-#if defined(FPDF_IMPLEMENTATION)
-#define FPDF_EXPORT __attribute__((visibility("default")))
-#else
-#define FPDF_EXPORT
-#endif  // defined(FPDF_IMPLEMENTATION)
-#endif  // defined(WIN32)
-#else
-#define FPDF_EXPORT
-#endif  // defined(COMPONENT_BUILD)
-
-#if defined(WIN32) && defined(FPDFSDK_EXPORTS)
 #define FPDF_CALLCONV __stdcall
 #else
+#define FPDF_EXPORT
 #define FPDF_CALLCONV
 #endif
 
diff --git a/testing/fuzzers/BUILD.gn b/testing/fuzzers/BUILD.gn
index fd47b88..0dbbccc 100644
--- a/testing/fuzzers/BUILD.gn
+++ b/testing/fuzzers/BUILD.gn
@@ -135,7 +135,6 @@
       "pdf_cjs_util_fuzzer.cc",
     ]
     deps = [
-      "../../fpdfsdk",
       "../../fxjs",
     ]
   }
@@ -144,7 +143,6 @@
       "pdf_fx_date_helpers_fuzzer.cc",
     ]
     deps = [
-      "../../fpdfsdk",
       "../../fxjs",
     ]
   }
@@ -155,7 +153,6 @@
         "pdf_bidi_fuzzer.cc",
       ]
       deps = [
-        "../../core/fpdfapi",
         "../../core/fxge",
         "../../xfa/fgas",
         "../../xfa/fgas/layout",
@@ -167,7 +164,6 @@
         "pdf_cfgas_stringformatter_fuzzer.cc",
       ]
       deps = [
-        "../../fpdfsdk",
         "../../xfa/fgas",
         "../../xfa/fxfa/parser",
       ]
@@ -178,7 +174,6 @@
         "pdf_cfx_barcode_fuzzer.cc",
       ]
       deps = [
-        "../../fpdfsdk",
         "../../xfa/fwl",
       ]
     }
@@ -265,7 +260,6 @@
         "pdf_css_fuzzer.cc",
       ]
       deps = [
-        "../../core/fxcodec",
         "../../core/fxcrt/css",
       ]
     }
@@ -275,7 +269,6 @@
         "pdf_fm2js_fuzzer.cc",
       ]
       deps = [
-        "../../fpdfsdk",
         "../../fxjs",
       ]
     }
@@ -285,7 +278,6 @@
         "pdf_formcalc_context_fuzzer.cc",
       ]
       deps = [
-        "../../fpdfsdk",
         "../../fpdfsdk/fpdfxfa",
         "../../fxjs",
         "../../xfa/fxfa",
@@ -314,7 +306,6 @@
     "pdf_cmap_fuzzer.cc",
   ]
   deps = [
-    "../../core/fpdfapi",
     "../../core/fpdfapi/font",
   ]
 }
@@ -324,7 +315,6 @@
     "pdf_codec_a85_fuzzer.cc",
   ]
   deps = [
-    "../../core/fpdfapi",
     "../../core/fxcodec",
   ]
 }
@@ -335,7 +325,6 @@
   ]
   deps = [
     ":utils",
-    "../../core/fpdfapi",
     "../../core/fxcodec",
   ]
 }
@@ -345,7 +334,6 @@
     "pdf_codec_icc_fuzzer.cc",
   ]
   deps = [
-    "../../core/fpdfapi",
     "../../core/fxcodec",
     "../../third_party/:lcms2",
   ]
@@ -357,7 +345,6 @@
   ]
   deps = [
     ":utils",
-    "../../core/fpdfapi",
     "../../core/fpdfapi/parser",
     "../../core/fxcodec",
     "../../core/fxge",
@@ -369,7 +356,6 @@
     "pdf_codec_rle_fuzzer.cc",
   ]
   deps = [
-    "../../core/fpdfapi",
     "../../core/fxcodec",
   ]
 }
@@ -385,7 +371,6 @@
     "pdf_hint_table_fuzzer.cc",
   ]
   deps = [
-    "../../core/fpdfapi",
     "../../core/fpdfapi/parser",
   ]
 }
@@ -395,7 +380,6 @@
     "pdf_jpx_fuzzer.cc",
   ]
   deps = [
-    "../../core/fpdfapi",
     "../../core/fxcodec",
     "../../core/fxge",
   ]
@@ -406,7 +390,6 @@
     "pdf_psengine_fuzzer.cc",
   ]
   deps = [
-    "../../core/fpdfapi",
     "../../core/fpdfapi/page",
   ]
 }
@@ -416,7 +399,6 @@
     "pdf_streamparser_fuzzer.cc",
   ]
   deps = [
-    "../../core/fpdfapi",
     "../../core/fpdfapi/page",
     "../../core/fpdfapi/parser",
   ]
@@ -426,9 +408,6 @@
   sources = [
     "pdf_xml_fuzzer.cc",
   ]
-  deps = [
-    "../../core/fxcrt",
-  ]
 }
 
 pdfium_public_fuzzer("pdfium_fuzzer_src") {