Split fsdk_mgr files apart.

BUILD.gn

Index: BUILD.gn
diff --git a/BUILD.gn b/BUILD.gn
index 29cf5f5e65d0be3e5301d9d27027d500af9a2f64..4f356ee6713b648c5bc9ae4d05b896383dd22c4f 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -65,13 +65,16 @@ static_library("pdfium") {
     "fpdfsdk/cba_annotiterator.cpp",
     "fpdfsdk/cfx_systemhandler.cpp",
     "fpdfsdk/cfx_systemhandler.h",
+    "fpdfsdk/cpdfdoc_environment.cpp",

[Tom Sepez, 2016/09/13 18:32:02]

Methinks this is actually a cpdfsdk_environment.cpp file providing a
CPDFSDK_Environment, and that there is no such thing as CPDFDoc_Environment,
given that grep shows it is only used in fpdfsdk/.  What good are pointless
naming conventions if we aren't going to rigidly adhere to them?

But that's a struggle for another day. 

[dsinclair, 2016/09/13 18:35:15]

Yea, will rename in a followup. Didn't want to make this CL any worse, heh.

     "fpdfsdk/cpdfsdk_annot.cpp",
     "fpdfsdk/cpdfsdk_annothandlermgr.cpp",
     "fpdfsdk/cpdfsdk_annotiterator.cpp",
     "fpdfsdk/cpdfsdk_baannot.cpp",
     "fpdfsdk/cpdfsdk_baannothandler.cpp",
     "fpdfsdk/cpdfsdk_datetime.cpp",
+    "fpdfsdk/cpdfsdk_document.cpp",
     "fpdfsdk/cpdfsdk_interform.cpp",
+    "fpdfsdk/cpdfsdk_pageview.cpp",
     "fpdfsdk/cpdfsdk_widget.cpp",
     "fpdfsdk/cpdfsdk_widgethandler.cpp",
     "fpdfsdk/fpdf_dataavail.cpp",
@@ -90,16 +93,18 @@ static_library("pdfium") {
     "fpdfsdk/fpdftext.cpp",
     "fpdfsdk/fpdfview.cpp",
     "fpdfsdk/fsdk_actionhandler.cpp",
-    "fpdfsdk/fsdk_mgr.cpp",
     "fpdfsdk/fsdk_pauseadapter.cpp",
     "fpdfsdk/include/cba_annotiterator.h",
+    "fpdfsdk/include/cpdfdoc_environment.h",
     "fpdfsdk/include/cpdfsdk_annot.h",
     "fpdfsdk/include/cpdfsdk_annothandlermgr.h",
     "fpdfsdk/include/cpdfsdk_annotiterator.h",
     "fpdfsdk/include/cpdfsdk_baannot.h",
     "fpdfsdk/include/cpdfsdk_baannothandler.h",
     "fpdfsdk/include/cpdfsdk_datetime.h",
+    "fpdfsdk/include/cpdfsdk_document.h",
     "fpdfsdk/include/cpdfsdk_interform.h",
+    "fpdfsdk/include/cpdfsdk_pageview.h",
     "fpdfsdk/include/cpdfsdk_widget.h",
     "fpdfsdk/include/cpdfsdk_widgethandler.h",
     "fpdfsdk/include/fsdk_actionhandler.h",