The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/01c043f5f744262981becd3d45a79981ad3f6b67

commit 01c043f5f744262981becd3d45a79981ad3f6b67
Author: allada <allada@chromium.org>
Date: Fri Mar 10 04:09:32 2017

[Devtools] Added Enable/Disable for request blocking in network

* Added Enable/Disable button in network blocking drawer.
* Persists the network blocking entries between devtools reloads.
* Changed code to use setBlockedURLs instead of add/remove counterparts.
* Moved icon notifier from main to network module.

see: http://imgur.com/a/G0VFI

R=pfeldman
BUG= 691164 

Review-Url: https://codereview.chromium.org/2692653003
Cr-Commit-Position: refs/heads/master@{#455986}

[modify] https://crrev.com/01c043f5f744262981becd3d45a79981ad3f6b67/headless/lib/headless_devtools_client_browsertest.cc
[modify] https://crrev.com/01c043f5f744262981becd3d45a79981ad3f6b67/third_party/WebKit/LayoutTests/http/tests/inspector/network/network-blocked-reason.html
[modify] https://crrev.com/01c043f5f744262981becd3d45a79981ad3f6b67/third_party/WebKit/Source/core/inspector/InspectorNetworkAgent.cpp
[modify] https://crrev.com/01c043f5f744262981becd3d45a79981ad3f6b67/third_party/WebKit/Source/core/inspector/InspectorNetworkAgent.h
[modify] https://crrev.com/01c043f5f744262981becd3d45a79981ad3f6b67/third_party/WebKit/Source/core/inspector/browser_protocol.json
[modify] https://crrev.com/01c043f5f744262981becd3d45a79981ad3f6b67/third_party/WebKit/Source/devtools/front_end/main/Main.js
[modify] https://crrev.com/01c043f5f744262981becd3d45a79981ad3f6b67/third_party/WebKit/Source/devtools/front_end/network/BlockedURLsPane.js
[modify] https://crrev.com/01c043f5f744262981becd3d45a79981ad3f6b67/third_party/WebKit/Source/devtools/front_end/network/NetworkLogView.js
[modify] https://crrev.com/01c043f5f744262981becd3d45a79981ad3f6b67/third_party/WebKit/Source/devtools/front_end/network/NetworkPanel.js
[modify] https://crrev.com/01c043f5f744262981becd3d45a79981ad3f6b67/third_party/WebKit/Source/devtools/front_end/sdk/NetworkManager.js
[modify] https://crrev.com/01c043f5f744262981becd3d45a79981ad3f6b67/third_party/WebKit/Source/devtools/front_end/sdk/module.json