Revert of Save pdf file instead of web page through context menu for embedded pdf file

Revert of Save pdf file instead of web page through context menu for embedded pdf file (patchset #8 id:160001 of https://codereview.chromium.org/2862583010/ )

Reason for revert:
PdfPluginContextMenuBrowserTest.EmbeddedPdfHasNoPageItems is flaky on Windows, see:
https://test-results.appspot.com/dashboards/flakiness_dashboard.html#testType=browser_tests%20(with%20patch)&tests=PdfPluginContextMenuBrowserTest.EmbeddedPdfHasNoPageItems

Original issue's description:
> Save pdf file instead of web page through context menu for embedded pdf file
> 
> When user clicks 'Save as...' in the context menu over an embedded pdf file,
> we should save the pdf file instead of the entire web page. We fix this by showing
> the correct context menu for embedded pdf versus full page pdf: only full page
> pdf's context menu shows page navigation items such as 'Reload',
> but embedded pdf's context menu doesn't show them.   
> 
> BUG=chromium:591071
> 
> Review-Url: https://codereview.chromium.org/2862583010
> Cr-Commit-Position: refs/heads/master@{#473105}
> Committed: https://chromium.googlesource.com/chromium/src/+/fd0e534843ac5926c1b26c7e1e7a7229fcb3aeee

TBR=lazyboy@chromium.org,weili@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:591071
Review-Url: https://codereview.chromium.org/2891923005
Cr-Commit-Position: refs/heads/master@{#473171}
Committed: https://chromium.googlesource.com/chromium/src/+/ab6a896a5431f19e96cbc15ce7920730ac4ace51

[Marc Treib, 2017-05-19 12:58:08]

The CQ bit was checked by treib@chromium.org

[Marc Treib, 2017-05-19 12:58:08]

Created Revert of Save pdf file instead of web page through context menu for
embedded pdf file

[commit-bot: I haz the power, 2017-05-19 12:58:30]

CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-05-19 12:58:52]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1495198688340760, "parent_rev":
"3e0003f69bab6a934d2a964248b20ba14b4e9c49", "commit_rev":
"ab6a896a5431f19e96cbc15ce7920730ac4ace51"}

[commit-bot: I haz the power, 2017-05-19 12:59:03]

Description was changed from

==========
Revert of Save pdf file instead of web page through context menu for embedded
pdf file (patchset #8 id:160001 of https://codereview.chromium.org/2862583010/ )

Reason for revert:
PdfPluginContextMenuBrowserTest.EmbeddedPdfHasNoPageItems is flaky on Windows,
see:
https://test-results.appspot.com/dashboards/flakiness_dashboard.html#testType...

Original issue's description:
> Save pdf file instead of web page through context menu for embedded pdf file
> 
> When user clicks 'Save as...' in the context menu over an embedded pdf file,
> we should save the pdf file instead of the entire web page. We fix this by
showing
> the correct context menu for embedded pdf versus full page pdf: only full page
> pdf's context menu shows page navigation items such as 'Reload',
> but embedded pdf's context menu doesn't show them.   
> 
> BUG=chromium:591071
> 
> Review-Url: https://codereview.chromium.org/2862583010
> Cr-Commit-Position: refs/heads/master@{#473105}
> Committed:
https://chromium.googlesource.com/chromium/src/+/fd0e534843ac5926c1b26c7e1e7a...

TBR=lazyboy@chromium.org,weili@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:591071
==========

to

==========
Revert of Save pdf file instead of web page through context menu for embedded
pdf file (patchset #8 id:160001 of https://codereview.chromium.org/2862583010/ )

Reason for revert:
PdfPluginContextMenuBrowserTest.EmbeddedPdfHasNoPageItems is flaky on Windows,
see:
https://test-results.appspot.com/dashboards/flakiness_dashboard.html#testType...

Original issue's description:
> Save pdf file instead of web page through context menu for embedded pdf file
> 
> When user clicks 'Save as...' in the context menu over an embedded pdf file,
> we should save the pdf file instead of the entire web page. We fix this by
showing
> the correct context menu for embedded pdf versus full page pdf: only full page
> pdf's context menu shows page navigation items such as 'Reload',
> but embedded pdf's context menu doesn't show them.   
> 
> BUG=chromium:591071
> 
> Review-Url: https://codereview.chromium.org/2862583010
> Cr-Commit-Position: refs/heads/master@{#473105}
> Committed:
https://chromium.googlesource.com/chromium/src/+/fd0e534843ac5926c1b26c7e1e7a...

TBR=lazyboy@chromium.org,weili@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:591071

Review-Url: https://codereview.chromium.org/2891923005
Cr-Commit-Position: refs/heads/master@{#473171}
Committed:
https://chromium.googlesource.com/chromium/src/+/ab6a896a5431f19e96cbc15ce792...
==========

[commit-bot: I haz the power, 2017-05-19 12:59:05]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/ab6a896a5431f19e96cbc15ce792...