make chrome build without any printing support

pdf/BUILD.gn

Index: pdf/BUILD.gn
diff --git a/pdf/BUILD.gn b/pdf/BUILD.gn
index 8afa86c07d5f7cea3b23967ffd8849c9a329f1f4..0871c623cf1d9fe9ce82c17767fab129bd2ffaf5 100644
--- a/pdf/BUILD.gn
+++ b/pdf/BUILD.gn
@@ -50,6 +50,7 @@ if (enable_pdf) {
     if (pdf_engine == 0) {
       deps += [
         "//pdf/pdfium/fuzzers",
+        "//printing",

[Lei Zhang, 2017/05/17 07:01:24]

You don't need this, since pdf/ is only using printing/ headers for constant
values and not actually linking against it.

[jzfeng, 2017/05/19 01:33:53]

Looks like it also use the methods from //printing.
Without "//printing",there are link errors:
../../pdf/pdfium/pdfium_engine.cc:2892: error: undefined reference to
'printing::ConvertUnitDouble(double, double, double)'
../../pdf/pdfium/pdfium_engine.cc:2894: error: undefined reference to
'printing::ConvertUnitDouble(double, double, double)'
../../pdf/pdfium/pdfium_engine.cc:1490: error: undefined reference to
'printing::ConvertUnit(double, int, int)'
../../pdf/pdfium/pdfium_engine.cc:1492: error: undefined reference to
'printing::ConvertUnit(double, int, int)'
../../pdf/pdfium/pdfium_engine.cc:1418: error: undefined reference to
'printing::ConvertUnitDouble(double, double, double)'
../../pdf/pdfium/pdfium_engine.cc:1420: error: undefined reference to
'printing::ConvertUnitDouble(double, double, double)'
../../pdf/pdfium/pdfium_engine.cc:3407: error: undefined reference to
'printing::CalculateScaleFactor(gfx::Rect const&, double, double, bool)'
../../pdf/pdfium/pdfium_engine.cc:3419: error: undefined reference to
'printing::CalculateMediaBoxAndCropBox(bool, bool, bool,
printing::PdfRectangle*, printing::PdfRectangle*)'
../../pdf/pdfium/pdfium_engine.cc:3422: error: undefined reference to
'printing::CalculateClipBoxBoundary(printing::PdfRectangle const&,
printing::PdfRectangle const&)'
../../pdf/pdfium/pdfium_engine.cc:3423: error: undefined reference to
'printing::ScalePdfRectangle(double, printing::PdfRectangle*)'
../../pdf/pdfium/pdfium_engine.cc:3429: error: undefined reference to
'printing::CalculateScaledClipBoxOffset(gfx::Rect const&, printing::PdfRectangle
const&, double*, double*)'
../../pdf/pdfium/pdfium_engine.cc:3432: error: undefined reference to
'printing::CalculateNonScaledClipBoxOffset(gfx::Rect const&, int, int, int,
printing::PdfRectangle const&, double*, double*)'
../../pdf/pdfium/pdfium_engine.cc:2546: error: undefined reference to
'printing::ConvertUnit(double, int, int)'
../../pdf/pdfium/pdfium_engine.cc:2548: error: undefined reference to
'printing::ConvertUnit(double, int, int)'

         "//third_party/pdfium",
       ]