Revert of Add a scroll offset to PDF documents to account for the top material design toolbar. (patchset #7 id:120001 of https://codereview.chromium.org/1255403002/ )

Reason for revert:
This patch breaks print preview.

BUG=516829

Original issue's description:
> Add a scroll offset to PDF documents to account for the top material design toolbar.
>
> Previously the toolbar in the material design PDF UI would always cover the top
> of pages when it was first loaded or when a page was navigated to using the
> page selector. Now we ensure that a blank region is left at the very top of
> the document when it is first loaded. This is the region that the toolbar
> covers, so the document is not obscured at all. When pages are navigated to, we
> ensure that the top of the selected page is always underneath the toolbar
> so that it is not obscured. The one exception to this is when in fit-to-page
> mode which causes the page to be zoomed to cover the entire screen, ignoring
> the toolbar. This is so that users can take advantaging of filling all of the
> screen real-estate with a page when that is what they want.
>
> This is implemented by initially scrolling the document to a negative offset
> (which is equal to the toolbar height). All subsequent scrolls are relative
> to this initial scroll. A few small bugs that assumed there was no blank space
> above the first page have also been fixed.
>
> BUG=439114
>
> Committed: https://crrev.com/daad0f1f879b13c8b55797ae5ce106d382283047
> Cr-Commit-Position: refs/heads/master@{#341685}

TBR=sammc@chromium.org,tsergeant@chromium.org,raymes@chromium.org
BUG=439114

Review URL: https://codereview.chromium.org/1267553004

Cr-Commit-Position: refs/heads/master@{#341820}

1 files changed, 2 insertions, 14 deletions

diff --git a/chrome/browser/resources/pdf/pdf.js b/chrome/browser/resources/pdf/pdf.js
index 3fb6148..dfa2d31 100644
--- a/chrome/browser/resources/pdf/pdf.js
+++ b/chrome/browser/resources/pdf/pdf.js
@@ -75,12 +75,6 @@ function shouldIgnoreKeyEvents(activeElement) {
 PDFViewer.MIN_TOOLBAR_OFFSET = 15;
 
 /**
- * The height of the toolbar along the top of the page. The document will be
- * shifted down by this much in the viewport.
- */
-PDFViewer.MATERIAL_TOOLBAR_HEIGHT = 64;
-
-/**
  * Creates a new PDFViewer. There should only be one of these objects per
  * document.
  * @constructor
@@ -110,16 +104,13 @@ function PDFViewer(browserApi) {
   this.errorScreen_ = $('error-screen');
 
   // Create the viewport.
-  var topToolbarHeight =
-      this.isMaterial_ ? PDFViewer.MATERIAL_TOOLBAR_HEIGHT : 0;
   this.viewport_ = new Viewport(window,
                                 this.sizer_,
                                 this.viewportChanged_.bind(this),
                                 this.beforeZoom_.bind(this),
                                 this.afterZoom_.bind(this),
                                 getScrollbarWidth(),
-                                this.browserApi_.getDefaultZoom(),
-                                topToolbarHeight);
+                                this.browserApi_.getDefaultZoom());
 
   // Create the plugin object dynamically so we can set its src. The plugin
   // element is sized to fill the entire window and is set to be fixed
@@ -152,11 +143,8 @@ function PDFViewer(browserApi) {
   }
   this.plugin_.setAttribute('headers', headers);
 
-  if (this.isMaterial_) {
+  if (this.isMaterial_)
     this.plugin_.setAttribute('is-material', '');
-    this.plugin_.setAttribute('top-toolbar-height',
-                              PDFViewer.MATERIAL_TOOLBAR_HEIGHT);
-  }
 
   if (!this.browserApi_.getStreamInfo().embedded)
     this.plugin_.setAttribute('full-frame', '');