Revert "Add a build target and a proper export header for shared library builds."

This reverts commit 00334675c18a0203f313cceb670c970a77280f49.

Reason for revert: Breaking the deps roller - https://chromium-review.googlesource.com/c/609307

Original change's description:
> Add a build target and a proper export header for shared library builds.
> 
> This CL adds support for Chromium's component build feature to pdfium.
> 
> The export header stub in fpdfview.h is expanded to match Chromium's
> export mechanisms and patterns (fixes pdfium:825).
> 
> A component/shared library build can be triggered by adding
> 
> is_component_build = true
> 
> as a gn argument. Please note that setting this will also affect some
> of pdfiums dependencies like v8, which will be build as components
> too.
> 
> Additionally, this CL provides a "pdf_source_set" template which
> dynamically enables the use of "source_set" when building a complete
> static library or a shared library to reduce build time.
> 
> When testing this it is recommended to only build the pdfium target as
> most of pdfiums test rely on non-public functions which aren't exported
> by the shared library.
> 
> Bug: pdfium:825,pdfium:826
> Change-Id: Icedc538ec535e11d1e53c4d5fabc8c064b275752
> Reviewed-on: https://pdfium-review.googlesource.com/8970
> Reviewed-by: dsinclair <dsinclair@chromium.org>
> Commit-Queue: dsinclair <dsinclair@chromium.org>

TBR=thestig@chromium.org,tsepez@chromium.org,brucedawson@chromium.org,dsinclair@google.com,dsinclair@chromium.org,licorn@gmail.com

Change-Id: Ib02af2298932481293f50d362ae87bfedf284821
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: pdfium:825, pdfium:826
Reviewed-on: https://pdfium-review.googlesource.com/10550
Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>

1 files changed, 13 insertions, 14 deletions

diff --git a/BUILD.gn b/BUILD.gn
index ffebe6355b..e081bf07dc 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -19,7 +19,6 @@ config("pdfium_common_config") {
   ldflags = []
   include_dirs = [ "." ]
   defines = [
-    "FPDF_IMPLEMENTATION",
     "OPJ_STATIC",
     "PNG_PREFIX",
     "PNG_USE_READ_MACROS",
@@ -100,7 +99,7 @@ config("xfa_warnings") {
   }
 }
 
-component("pdfium") {
+static_library("pdfium") {
   sources = [
     "fpdfsdk/cba_annotiterator.cpp",
     "fpdfsdk/cba_annotiterator.h",
@@ -229,7 +228,7 @@ component("pdfium") {
   }
 }
 
-pdf_source_set("test_support") {
+static_library("test_support") {
   testonly = true
   sources = [
     "testing/fx_string_testhelpers.cpp",
@@ -262,7 +261,7 @@ pdf_source_set("test_support") {
   configs += [ ":pdfium_core_config" ]
 }
 
-pdf_source_set("image_diff") {
+static_library("image_diff") {
   testonly = true
   sources = [
     "testing/image_diff/image_diff_png.cpp",
@@ -282,7 +281,7 @@ visibility = [
   "//:gn_visibility",
 ]
 
-pdf_source_set("fdrm") {
+static_library("fdrm") {
   sources = [
     "core/fdrm/crypto/fx_crypt.cpp",
     "core/fdrm/crypto/fx_crypt.h",
@@ -295,7 +294,7 @@ pdf_source_set("fdrm") {
   ]
 }
 
-pdf_source_set("fpdfdoc") {
+static_library("fpdfdoc") {
   sources = [
     "core/fpdfdoc/cline.cpp",
     "core/fpdfdoc/cline.h",
@@ -795,7 +794,7 @@ config("fxge_warnings") {
   }
 }
 
-pdf_source_set("fxcrt") {
+static_library("fxcrt") {
   sources = [
     "core/fxcrt/cfx_bytestring.cpp",
     "core/fxcrt/cfx_bytestring.h",
@@ -1120,7 +1119,7 @@ static_library("fxge") {
   }
 }
 
-pdf_source_set("pwl") {
+static_library("pwl") {
   sources = [
     "fpdfsdk/pwl/cpwl_appstream.cpp",
     "fpdfsdk/pwl/cpwl_appstream.h",
@@ -1161,7 +1160,7 @@ pdf_source_set("pwl") {
   ]
 }
 
-pdf_source_set("javascript") {
+static_library("javascript") {
   sources = [
     "fpdfsdk/javascript/ijs_event_context.h",
     "fpdfsdk/javascript/ijs_runtime.h",
@@ -1224,7 +1223,7 @@ pdf_source_set("javascript") {
   }
 }
 
-pdf_source_set("formfiller") {
+static_library("formfiller") {
   sources = [
     "fpdfsdk/formfiller/cba_fontmap.cpp",
     "fpdfsdk/formfiller/cba_fontmap.h",
@@ -1256,7 +1255,7 @@ pdf_source_set("formfiller") {
 }
 
 if (pdf_enable_v8) {
-  pdf_source_set("fxjs") {
+  static_library("fxjs") {
     sources = [
       "fxjs/fxjs_v8.cpp",
       "fxjs/fxjs_v8.h",
@@ -1296,7 +1295,7 @@ if (pdf_enable_v8) {
 }
 
 if (pdf_enable_xfa) {
-  pdf_source_set("fpdfxfa") {
+  static_library("fpdfxfa") {
     sources = [
       "fpdfsdk/fpdfxfa/cpdfxfa_context.cpp",
       "fpdfsdk/fpdfxfa/cpdfxfa_context.h",
@@ -1315,7 +1314,7 @@ if (pdf_enable_xfa) {
     configs += [ ":pdfium_core_config" ]
   }
 
-  pdf_source_set("fxbarcode") {
+  static_library("fxbarcode") {
     sources = [
       "fxbarcode/BC_Library.cpp",
       "fxbarcode/BC_Library.h",
@@ -1450,7 +1449,7 @@ if (pdf_enable_xfa) {
     configs += [ ":pdfium_core_config" ]
   }
 
-  pdf_source_set("xfa") {
+  static_library("xfa") {
     sources = [
       "xfa/fde/cfde_path.cpp",
       "xfa/fde/cfde_path.h",