[Bug 1134787] [NEW] internal PDF viewer: "Save Page as" saves "rubbish"

[fabtagon]

Public bug reported:

When opening an online PDF in internal PDF viewer (default behaviour
with current edition), viewing is fine, downloading using the downlaod
button in the top right corner is fine, but when using "File" > "Save
Page as", "HTML rubbish" is stored.

Expected behaviour:
The PDF file is stored as PDF.

Experienced behaviour, some more detail:
Normal "Save as" dialog pops up and asks me for a place to store foo.pdf (no reason to become suspicious). What is actually stored: foo.pdf (an HTML file), foo_files directory containing debugger.js, l10n.js. pdf.js, viewer.css and viewer.js. Upon renaming foo.pdf to foo.html, the file can be opened using Firefox. The internal PDF viewer shows up, but no content of the respective PDF is shown.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: firefox 19.0+build1-0ubuntu0.12.04.1
ProcVersionSignature: Ubuntu 3.2.0-38.61-generic 3.2.37
Uname: Linux 3.2.0-38-generic x86_64
AddonCompatCheckDisabled: False
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu17.1
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  fab        1737 F.... pulseaudio
BuildID: 20130218103317
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xffaf8000 irq 46'
   Mixer name	: 'Analog Devices AD1988'
   Components	: 'HDA:11d41988,104381e1,00100400'
   Controls      : 50
   Simple ctrls  : 27
Channel: Unavailable
CurrentDmesg: [   36.904028] eth0: no IPv6 routers present
Date: Wed Feb 27 21:40:16 2013
DefaultProfilePrefSources: prefs.js
ForcedLayersAccel: False
InstallationMedia: Ubuntu-Server 12.04 LTS "Precise Pangolin" - Release amd64 (20120424.1)
IpRoute:
 default via 141.76.65.254 dev eth0  metric 100 
 141.76.65.0/24 dev eth0  proto kernel  scope link  src 141.76.65.136 
 169.254.0.0/16 dev eth0  scope link  metric 1000
IwConfig:
 lo        no wireless extensions.
 
 eth0      no wireless extensions.
MarkForUpload: True
Profile1PrefSources: prefs.js
Profile2PrefSources: prefs.js
Profile3PrefSources: prefs.js
Profile4PrefSources: prefs.js
Profile5PrefSources: prefs.js
Profile6PrefSources: prefs.js
Profile7PrefSources: prefs.js
Profile8PrefSources: prefs.js
RelatedPackageVersions:
 rhythmbox-mozilla 2.96-0ubuntu4.2
 totem-mozilla     3.0.1-0ubuntu21.1
RfKill:
 
RunningIncompatibleAddons: False
SourcePackage: firefox
UpgradeStatus: No upgrade log present (probably fresh install)
WifiSyslog: Feb 27 18:39:12 tyr NetworkManager[954]: <info> Unmanaged Device found; state CONNECTED forced. (see http://bugs.launchpad.net/bugs/191889)
dmi.bios.date: 07/13/2007
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1604
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: P5B
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1604:bd07/13/2007:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5B:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer

** Affects: firefox (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug precise running-unity

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Title:
  internal PDF viewer: "Save Page as" saves "rubbish"

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