Revert of Implement webview.captureVisibleRegion() (patchset #9 id:160001 of https://codereview.chromium.org/1582053002/ )

Reason for revert:
The test WebViewAPITest.TestCaptureVisibleRegion is failing on several windows bots:

https://build.chromium.org/p/chromium.win/builders/Win7%20Tests%20%28dbg%29%281%29/builds/45040
https://build.chromium.org/p/chromium.win/builders/XP%20Tests%20%281%29/builds/42690
https://build.chromium.org/p/chromium.win/builders/Vista%20Tests%20%281%29/builds/64394

Original issue's description:
> Implement webview.captureVisibleRegion()
>
> This CL implements  webview.captureVisibleRegion(), an extension/apps
> API to allow WebView users to capture screenshots of the contents
> displayed in a WebView. The surfaces contents capture has been plumbed
> via RenderWidgetHostViewChildFrame so this implementation should not
> require changes when WebView switches to using OOPIF.
>
> As part of the implementation, there are two notable refactors:
>
> 1) CaptureWebContentsFunction has been refactored into
> WebContentsCaptureClient to remove the extensions::AsyncExtensionFunction
> dependence so that this code can be used by both tabs.captureVisibleTab
> and webview.captureVisibleRegion, and
>
> 2) common code from DelegatedFrameHost has ben moved to
> content/browser/compositor/surface_utils.* in order to avoid duplication
> as both DelegatedFrameHost and RenderWidgetHostViewChildFrame now
> use the code.
>
> BUG=326755
>
> Committed: https://crrev.com/5b8cdcc82fc9da7bab15fd3dbf65df843dc73589
> Cr-Commit-Position: refs/heads/master@{#370565}

TBR=rockot@chromium.org,creis@chromium.org,kenrb@chromium.org,nick@chromium.org,fsamuel@chromium.org,wjmaclean@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=326755

Review URL: https://codereview.chromium.org/1614703003

Cr-Commit-Position: refs/heads/master@{#370641}

1 files changed, 1 insertions, 24 deletions

diff --git a/extensions/test/data/web_view/apitest/main.js b/extensions/test/data/web_view/apitest/main.js
index b203025..983212c 100644
--- a/extensions/test/data/web_view/apitest/main.js
+++ b/extensions/test/data/web_view/apitest/main.js
@@ -1685,28 +1685,6 @@ function testWebRequestAPIGoogleProperty() {
   document.body.appendChild(webview);
 }
 
-// This is a basic test to verify that image data is returned by
-// captureVisibleRegion().
-function testCaptureVisibleRegion() {
-  var webview = document.createElement('webview');
-  webview.setAttribute('src', 'data:text/html,webview test');
-
-  webview.addEventListener('loadstop', function(e) {
-    webview.captureVisibleRegion({}, function(imgdata) {
-      if (chrome.runtime.lastError) {
-        console.log('webview.apitest.testCaptureVisibleRegion: ' +
-            chrome.runtime.lastError.message);
-        embedder.test.fail();
-      } else {
-        embedder.test.assertTrue(
-            imgdata.indexOf('data:image/jpeg;base64') == 0);
-        embedder.test.succeed();
-      }
-    });
-  });
-  document.body.appendChild(webview);
-}
-
 // Tests end.
 
 embedder.test.testList = {
@@ -1774,8 +1752,7 @@ embedder.test.testList = {
   'testWebRequestAPI': testWebRequestAPI,
   'testWebRequestAPIWithHeaders': testWebRequestAPIWithHeaders,
   'testWebRequestAPIExistence': testWebRequestAPIExistence,
-  'testWebRequestAPIGoogleProperty': testWebRequestAPIGoogleProperty,
-  'testCaptureVisibleRegion' : testCaptureVisibleRegion
+  'testWebRequestAPIGoogleProperty': testWebRequestAPIGoogleProperty
 };
 
 onload = function() {