Mark base::BindRepeating explicitly in SandboxStatusExtension

AddInterface() uses base::BindRepeating, so the input object must be a
base::BindRepeating, and it seems that it can be called multiple times
based on the comment here:
https://source.chromium.org/chromium/chromium/src/+/master:chrome/common/sandbox_status_extension_android.mojom;l=11

Similarly, CreateFunctionTemplate() receives a repeating callback, and
it is reasonable to allow getAndroidSandboxStatus to be called multiple
times.

Bug: 1007641
Change-Id: I3103b1e4ca8f5d6064c4b2c74d19cb9aad01fed1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2107705
Commit-Queue: Nicolás Peña Moreno <npm@chromium.org>
Reviewed-by: Bo <boliu@chromium.org>
Reviewed-by: Yaron Friedman <yfriedman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#751102}

chrome/renderer/sandbox_status_extension_android.cc

@@ -31,9 +31,9 @@ SandboxStatusExtension::SandboxStatusExtension(content::RenderFrame* frame)
   // Don't do anything else for subframes.
   if (!frame->IsMainFrame())
     return;
-  frame->GetAssociatedInterfaceRegistry()->AddInterface(
-      base::Bind(&SandboxStatusExtension::OnSandboxStatusExtensionRequest,
-                 base::RetainedRef(this)));
+  frame->GetAssociatedInterfaceRegistry()->AddInterface(base::BindRepeating(
+      &SandboxStatusExtension::OnSandboxStatusExtensionRequest,
+      base::RetainedRef(this)));
 }
 
 SandboxStatusExtension::~SandboxStatusExtension() {}
@@ -81,7 +81,8 @@ void SandboxStatusExtension::Install() {
   v8::Local<v8::Function> function;
   bool success =
       gin::CreateFunctionTemplate(
-          isolate, base::Bind(&SandboxStatusExtension::GetSandboxStatus, this))
+          isolate,
+          base::BindRepeating(&SandboxStatusExtension::GetSandboxStatus, this))
           ->GetFunction(context)
           .ToLocal(&function);
   if (success) {