Remove unused code [2/2]

Previous patch removed functions non referenced by a caller:
https://chromium-review.googlesource.com/c/chromium/src/+/2523114

Pulling the string further, this caused more functions not to have a
any callers, which are removed here.

Bug: 1146469
Change-Id: Ic82c95c07523d10e6d88d45ea2fa392562f05501
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2521190
Commit-Queue: Arthur Sonzogni <arthursonzogni@chromium.org>
Reviewed-by: Kinuko Yasuda <kinuko@chromium.org>
Auto-Submit: Arthur Sonzogni <arthursonzogni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#825804}

content/common/frame.mojom

@@ -92,9 +92,6 @@ interface Frame {
   // It is safe to call this without calling BlockRequests.
   ResumeBlockedRequests();
 
-  // Cancels blocked requests. BlockRequests must have been called before.
-  CancelBlockedRequests();
-
   // Samsung Galaxy Note-specific "smart clip" stylus text getter.
   // Extracts the data at the given rect.
   [EnableIf=is_android]

content/renderer/render_frame_impl.cc

@@ -3017,10 +3017,6 @@ void RenderFrameImpl::ResumeBlockedRequests() {
   frame_request_blocker_->Resume();
 }
 
-void RenderFrameImpl::CancelBlockedRequests() {
-  frame_request_blocker_->Cancel();
-}
-
 void RenderFrameImpl::AllowBindings(int32_t enabled_bindings_flags) {
   enabled_bindings_ |= enabled_bindings_flags;
 }

content/renderer/render_frame_impl.h

@@ -450,7 +450,6 @@ class CONTENT_EXPORT RenderFrameImpl
       GetCanonicalUrlForSharingCallback callback) override;
   void BlockRequests() override;
   void ResumeBlockedRequests() override;
-  void CancelBlockedRequests() override;
   void UpdateBrowserControlsState(BrowserControlsState constraints,
                                   BrowserControlsState current,
                                   bool animate) override;

third_party/blink/public/platform/web_frame_request_blocker.h

@@ -32,9 +32,6 @@ class BLINK_PLATFORM_EXPORT WebFrameRequestBlocker
   // Resumes any blocked subresource requests.
   virtual void Resume() = 0;
 
-  // Cancels any blocked subresource requests.
-  virtual void Cancel() = 0;
-
   virtual std::unique_ptr<URLLoaderThrottle> GetThrottleIfRequestsBlocked() = 0;
 };
 

third_party/blink/renderer/platform/loader/frame_request_blocker.cc

@@ -41,12 +41,6 @@ class RequestBlockerThrottle : public URLLoaderThrottle,
     delegate_->Resume();
   }
 
-  void Cancel() override {
-    frame_request_blocker_->RemoveObserver(this);
-    frame_request_blocker_ = nullptr;
-    delegate_->CancelWithError(net::ERR_FAILED);
-  }
-
  private:
   scoped_refptr<FrameRequestBlocker> frame_request_blocker_;
 };
@@ -68,12 +62,6 @@ void FrameRequestBlocker::Resume() {
   clients_->Notify(FROM_HERE, &Client::Resume);
 }
 
-void FrameRequestBlocker::Cancel() {
-  DCHECK(blocked_.IsOne());
-  blocked_.Decrement();
-  clients_->Notify(FROM_HERE, &Client::Cancel);
-}
-
 std::unique_ptr<URLLoaderThrottle>
 FrameRequestBlocker::GetThrottleIfRequestsBlocked() {
   if (blocked_.IsZero())

third_party/blink/renderer/platform/loader/frame_request_blocker.h

@@ -25,16 +25,12 @@ class FrameRequestBlocker final : public WebFrameRequestBlocker {
   // Resumes any blocked subresource requests.
   void Resume() override;
 
-  // Cancels any blocked subresource requests.
-  void Cancel() override;
-
   std::unique_ptr<URLLoaderThrottle> GetThrottleIfRequestsBlocked() override;
 
  private:
   class Client {
    public:
     virtual void Resume() = 0;
-    virtual void Cancel() = 0;
   };
 
   friend class base::RefCountedThreadSafe<FrameRequestBlocker>;