Revert "Make CPDF_Document cache CPDF_Pages"

This reverts commit f0d9d28a034fe3650c3c2d662090c1e8687ddb16.

Reason for revert: avoid parsing page.

Change-Id: Id3478f7e38f1cbe95d098e00158b1d7d9dc6f76e
Reviewed-on: https://pdfium-review.googlesource.com/33750
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Tom Sepez <tsepez@chromium.org>

2 files changed, 4 insertions, 7 deletions

diff --git a/core/fpdfapi/page/cpdf_page.cpp b/core/fpdfapi/page/cpdf_page.cpp
index c5c85635b2..7c0a3234c9 100644
--- a/core/fpdfapi/page/cpdf_page.cpp
+++ b/core/fpdfapi/page/cpdf_page.cpp
@@ -21,11 +21,11 @@
 
 CPDF_Page::CPDF_Page(CPDF_Document* pDocument,
                      CPDF_Dictionary* pPageDict,
-                     bool bUseRenderCache)
+                     bool bPageCache)
     : CPDF_PageObjectHolder(pDocument, pPageDict),
       m_PageSize(100, 100),
       m_pPDFDocument(pDocument) {
-  if (bUseRenderCache)
+  if (bPageCache)
     m_pPageRender = pdfium::MakeUnique<CPDF_PageRenderCache>(this);
   if (!pPageDict)
     return;
diff --git a/core/fpdfapi/page/cpdf_page.h b/core/fpdfapi/page/cpdf_page.h
index b94326e47b..0bb99b73f1 100644
--- a/core/fpdfapi/page/cpdf_page.h
+++ b/core/fpdfapi/page/cpdf_page.h
@@ -12,7 +12,6 @@
 #include "core/fpdfapi/page/cpdf_pageobjectholder.h"
 #include "core/fxcrt/fx_coordinates.h"
 #include "core/fxcrt/fx_system.h"
-#include "core/fxcrt/observable.h"
 #include "core/fxcrt/retain_ptr.h"
 #include "core/fxcrt/unowned_ptr.h"
 #include "third_party/base/optional.h"
@@ -23,9 +22,7 @@ class CPDF_Object;
 class CPDF_PageRenderCache;
 class CPDF_PageRenderContext;
 
-class CPDF_Page : public Retainable,
-                  public Observable<CPDF_Page>,
-                  public CPDF_PageObjectHolder {
+class CPDF_Page : public Retainable, public CPDF_PageObjectHolder {
  public:
   class View {};  // Caller implements as desired, empty here due to layering.
   class Extension : public Retainable {};  // XFA page parent class, layering.
@@ -69,7 +66,7 @@ class CPDF_Page : public Retainable,
  private:
   CPDF_Page(CPDF_Document* pDocument,
             CPDF_Dictionary* pPageDict,
-            bool bUseRenderCache);
+            bool bPageCache);
   ~CPDF_Page() override;
 
   void StartParse();